3/4 vs 1/2 Impact Wrench Comparison

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The whole point of getting an impact wrench is having a tool that will allow you to either fasten or remove nuts and bolts with easy.

But the million-dollar question is, which one should you go for: a 3/4 or 1/2 impact wrench?

It’s a tricky decision and, surprisingly, finding a comprehensive guide that compares these two can be a very hard task.

But… fear not!

I’ve taken it upon myself to create a detailed comparison between these two impact wrenches, along with some valuable insights that you won’t find anywhere else.

So, buckle up, and get ready to discover the differences and similarities between a 3/4 and a 1/2 impact wrench.

Let’s begin

What’s an Impact Wrench

Imagine a world where tightening and loosening nuts and bolts is as easy as a snap of your fingers.

Well, that world exists and it’s possible thanks to impact wrenches.

An impact wrench is a solution to tough and stubborn nuts and bolts that are a nightmare to remove. This is possible thanks to its high-torque and rapid impacts that loosen or tighten bolts with ease.

The impact mechanism works by converting the energy stored in a spring into a high-speed rotational force, which is then transferred to the anvil and onto the bolt. This process creates a high-torque impact that can loosen even the most stubborn bolts.

I mean… mechanics can tighten bolts in seconds, while construction workers can remove bolts with ease, which is why this tool is so loved amongst tradesmen.

But wait! there’s a catch.

Different impact wrenches have different-sized anvils and it can be a bit confusing trying to figure out which one is best for your needs.

Don’t worry, though, we’ve got you covered.

Here I’ll take you on a ride through the differences between 3/4 and 1/2 impact wrenches to, hopefully, equip you with all the knowledge you need to make an informed decision.

3/4″ vs 1/2″ Impact Wrench

The best way to compare the differences and similarities between 1/2 vs 3/4 impact wrenches is by analyzing them from different viewpoints:

  1. Torque
  2. Portability & Weight
  3. Versatility
  4. Precision & Control
  5. Price
  6. Durability


Torque is the backbone of an impact wrench, the driving force behind tightening and loosening those stubborn bolts.

Think of it as the engine of a car – the higher the torque, the more power you have at your fingertips.

In terms of raw power, 3/4” impact wrenches are the clear champions over 1/2” impact wrenches. It’s all thanks to its larger size, which houses a more robust motor and drive mechanism.

This is how 1/2″ impact wrenches usually deliver a torque output of 700-1200 ft-lbs, while the latter provides a torque output of around 300-600 ft-lbs.

Put simply, 3/4” impact wrenches are heavyweight contenders in the impact wrench world.

So, when you’re faced with heavy-duty jobs such as loosening rusted bolts, tightening large nuts, or working on construction sites, a 3/4” impact wrench’s high torque levels come in handy.

Portability & Weight

Picture this – you’re a seasoned tradesman that’s bursting with pride, ready to take on any challenge the day throws at you.

And then… reality sets in as you’re carrying around a 3/4 impact wrench that feels like it weighs more than a car and by the end of the day, your arms are sore, your back is aching, and you’re ready to call it quits.

Enter the 1/2″ impact wrench, the hero you didn’t know you needed. This compact powerhouse may be small in size, but it’s big on performance.

Opposite to 3/4″ impact wrenches, which are bulky and heavy, their 1/2 counterparts are manufactured with lightweight and compact components making them the perfect tool for extended use and tight spaces.

So, if you’re working for hours on end or maneuvering through tight spaces, a 1/2 impact wrench might be the best tool for you.


1/2 impact wrenches are more versatile than their 3/4″ counterparts

In the tool-world (as I call it) versatility is king.

For instance, mechanics are often faced with the hard task of working in tight spaces with stubborn nuts and bolts that are incredibly difficult to remove with a regular breaker bar, where a larger impact wrench just won’t fit the bill.

This is where the 1/2-inch impact wrench shines like a diamond in the rough as its compact design and solid torque make it easy to maneuver its body, ensuring that even the tightest spaces can be conquered with ease.

Thus, it’s easy to see how 1/2 impact wrenches are substantially more versatile than 3/4 impact wrenches.

But wait, while the 1/2-inch impact wrench may rule the roost when it comes to versatility, the 3/4-inch impact wrench isn’t far behind.

In recent years, manufacturers have been hard at work, shrinking the size of 3/4 inch impact wrenches to make them more versatile.

I mean, who knows, we may just see a 3/4 inch impact wrench that’s as small as its 1/2 inch counterpart, yet packs the raw power that it’s known for! The future is full of surprises, my friends.

Precision & Control

The choice between a 1/2 inch and a 3/4 inch can be a real head-scratcher.

On one hand, we have the behemoth 3/4 inch impact wrench, with raw power that could make the Hulk green with envy.

But on the other, there’s the lithe and nimble 1/2-inch impact wrench, boasting a great combination of compactness and solid torque that’s simply unmatched.

The precision and easy-to-control body each tool has can tilt the scales to convince you what kind of tool is better for you, right?

Well, in that case, then a 1/2 impact wrench would be a clear winner as they are much more compact than 3/4 impact wrenches, making them easier to maneuver and control.

The reduced power and size of the 1/2 impact wrench make it the preferred choice for more precise tasks where control and accuracy are of the utmost importance.


In these tough economic times, American tradesmen are feeling the squeeze like never before. So, when it comes to picking the right impact wrench, affordability is a crucial factor to consider.

Let’s face it, 3/4 inch impact wrenches can be a real wallet buster.

With their larger size and more powerful motor, these tools come with a hefty price tag that is usually well above $200.

But, do you really need all that power and size for every job? Think about it, are you really blasting off stubborn lug nuts on a daily basis?

Enter the 1/2-inch impact wrench, the budget-friendly hero of the toolbox.

These versatile little guys may not pack the same punch as their larger counterparts, but they get the job done just fine.

And the best part? They won’t leave you feeling like you took out a second mortgage just to add them to your collection as they usually cost less than $150.


Picture this: you’ve just spent your hard-earned money on a new impact wrench, eager to tackle your next project and BOOM! It breaks after just a few months of light use.

Heartbreaking and frustrating, right?

This is why durability is key when it comes to impact wrenches. I mean, you don’t want to skimp on quality for affordability… sooner or later you’ll regret it.

So, for tradesmen looking for a heavy-duty tool that’s built to last, I believe a 3/4 inch impact wrench is the way to go.

These impact wrenches have internal components made to withstand the toughest jobs. From their brushless motors to their solid housing, every aspect of a 3/4-inch impact wrench is designed for ruggedness and heavy use.

Yes, they may come with a higher price tag, but the investment is definitely worth it.

Comparison Table

Here’s a quick comparison table that will allow you to quickly see what separates a 1/2 impact wrench from a 3/4 impact wrench:

1/2 Impact Wrench3/4 Impact Wrench
TorqueLess TorqueMore Torque
Portability & WeightMore PortableLess Portable
VersatilityMore VersatileOnly for Heavy Duty Jobs
Precision & ControlMore PreciseLess Precise
DurabilityLess DurableMore Durable

Benefits of 3/4 Impact Wrench

For those interested in the advantages that a 3/4 impact wrench brings to the table, I decided to list them and analyze them:

  1. Higher Torque
  2. Suited for Heavy Duty Jobs
  3. More Durable
  4. Less Fatigue

Higher Torque

Have you ever tried to loosen a stubborn bolt with a weak impact wrench, only to find yourself tossing it aside in frustration?

Well, my friend, that’s where the concept of “output torque” comes into play.

The “torque” that an impact wrench outputs refer to the rotational force generated through the attached socket to turn a bolt or nut, by either fastening or unfastening it.

Thus, the higher the torque, the more power an impact wrench has to get the job done.

And this is exactly where the 3/4″ impact wrench shines. I mean, you can easily find a 3/4 inch impact wrench with higher torque outputs, reaching up to 1500 ft-lb or more.

This means you can tackle even rusty and stubborn nuts and bolts with confidence, never having to worry about your impact wrench falling short of the mark like you would with a 1/2 impact wrench.

Suited for Heavy Duty Jobs

3/4 impact wrenches are better suited for intensive jobs given that they are more powerful

Some tradesmen need a trusty impact wrench that can handle the toughest jobs with ease.

In that context, 3/4 impact wrenches stand as powerful tools designed specifically for the tradesman who doesn’t shy away from a challenge.

For starters, 3/4-inch impact wrenches can tackle larger bolts and nuts that other wrenches simply can’t handle. This makes them perfect for industrial and construction work where bigger nuts and bolts are the norm.

But it’s not just about size, 3/4 impact wrenches also come equipped with bigger motors and anvils.

These components combine to output a rotational torque that’s more than enough to loosen even the most stubborn, rusty nuts and bolts, saving you time and physical strength.

More Durable

Gone are the days when power tools were made to last a lifetime. In today’s world, manufacturers have become more concerned with cutting costs and boosting profits, often at the expense of tool durability.

The good news? 3/4 impact wrenches are here to save the day, this beast of a tool is built to last thanks to its robust construction and top-notch materials.

The high-grade steel body, combined with the hardened steel anvil and internal components, creates a solid foundation for the tool.

Add in a dash of high-quality composites for the handle and grip, and voila! You’ve got a tool that’s not only tough enough to handle the toughest job sites.

Less Fatigue

We’ve all been there – hours spent twisting and turning, trying to loosen the tightest nuts and bolts, only to feel like we’ve just completed a grueling workout.

And while other impact wrenches may seem like the solution, they too can lead to exhaustion, especially when tackling jobs that require a prolonged operation as these aren’t particularly light tools.

Enter the 3/4 impact wrench – a powerhouse tool that takes the strain out of fastening and removing nuts and bolts.

With its unbeatable torque, this tool makes quick work of even the most stubborn fasteners, freeing you from the endless twisting and turning that can leave you feeling drained.

Cons of 3/4 Impact Wrench

Here are the disadvantages of getting a 3/4 impact wrench instead of its 1/2 counterpart:

  1. More Expensive
  2. More Heavy & Bulky
  3. Less Precise

More Expensive

3/4 impact wrenches are considerable more expensive than 1/2 impact wrenches

We all know the feeling of shock when shopping for expensive power and pneumatic tools.

With their powerful motors and top-of-the-line internal components, 3/4 impact wrenches are no exception, costing a pretty penny, often commanding prices of over $200.

But here’s the thing – when you’re dealing with intensive jobs that demand solid torque and power, you want an impact wrench like that.

So, yes, the upfront cost may be daunting, but think of it as an investment in your tradesmanship.

You’ll be acquiring an impact wrench that can handle any stubborn nut and bolt you throw its way and produce results that will make you proud. And isn’t that worth every penny?

Heavier & Bulky

Have you ever found yourself tightening bolts and nuts for what feels like hours and your hands start to ache, and your arms feel like they’re about to fall off?

That usually happens because the impact wrench you’re using is heavy and bulky, making it a real drag to hold for extended periods.

Well, sadly, this is a common experience for tradesmen who use 3/4″ impact wrenches as these tools are built with heavier and bigger internal components, which give them immense torque but also make them hefty and bulky.

This makes them a less-than-ideal option for working long hours which can be a real challenge for tradesmen who frequently find themselves in these types of situations.

But, while they may not be the most comfortable tool in your kit, they are certainly one of the most powerful. And, in the world of trades, sometimes power trumps comfort.

Less Precise

If you’re searching for a tool that can provide you with the ultimate precision in terms of torque an 3/4 impact wrench might not be the ideal choice for you.

Let me explain: You see, the beastly torque of a 3/4 impact wrench can be a double-edged sword.

On one hand, it offers incredible power to easily remove rusty nuts and bolts that would take you hours to remove with a manual breaker bar, but on the other hand, that very same power can be challenging to control with pinpoint accuracy.

And if you’re working on a project that requires you to hold the tool for hours, the bulkiness and weight of the 3/4 impact wrench can make your arms feel like jello, leaving you far from being precise.

Benefits of 1/2 Impact Wrench

Here are the most clear benefits that 1/2 impact wrenches bring to the table:

  1. Compactness
  2. Versatility
  3. Affordable
  4. Socket Availability


1/2 impact wrenches are very compact when compared to 3/4 impact wrenches

There’s nothing more frustrating for a tradesman than having to navigate tight spaces with a bulky and heavy impact wrench.

It’s in those moments when you truly appreciate the compactness of a 1/2 impact wrench as they are designed to be lightweight and easy to fit into those cramped places, which makes them a lifesaver for those jobs that require precision and agility.

And, unlike their heftier 3/4″ counterparts, 1/2 impact wrenches are easier to hold for extended periods of time, so you can tackle even the most challenging projects with ease.

So, what makes these impact wrenches so compact?

The secret lies in their design: 1/2 impact wrenches are constructed with smaller and fewer internal components, which makes them lighter and more compact.

And, while they may not pack quite the same punch as their larger brethren, they more than makeup for it in terms of ease of use and maneuverability.


As a seasoned tradesman, I can vouch for the fact that versatility is everything when it comes to air impact wrenches.

Whether it’s a tight space or an awkward angle, the ability to switch between tasks quickly and efficiently can make all the difference.

That’s why a 1/2 impact wrench is the tool of choice for those who want to be ready for anything.

Unlike its bulkier 3/4 counterpart, the 1/2 impact wrench is designed with a lighter and compact frame that makes it easier to maneuver and switch between tasks and making it possible to fit in tight spaces that a 3/4 impact wrench simply can’t reach.

Also, 1/2 impact wrenches have a medium level of torque output which can be easily adapted to most tasks a tradesman would need to tackle at the worksite.


We all know the importance of keeping costs low in today’s economy, especially if you’re a tradesman. This is why, when it comes to buying an impact wrench, price is a major consideration.

While 3/4 impact wrenches offer more power, they also come with a higher price tag, leaving 1/2 impact wrenches as a very affordable yet powerful tool that usually doesn’t surpass the $150 mark.

Why are 1/2 impact wrenches more budget-friendly than the rest?

Well, they are made with average internal components and don’t have any fancy bells and whistles that would drive up the price tag.

Plus, being a popular tool, they are manufactured in large quantities, which means they can be purchased at a much lower cost compared to other more specialized power tools.

Socket Availability

Sockets are the key to unlocking the full potential of an impact wrench.

They provide the flexibility and adaptability you need to tackle any project that comes your way as they allow you to easily switch between different sizes and shapes of bolts, nuts, and other fasteners

The good news? With the 1/2 impact wrench being the most popular type of impact wrench on the market, finding the right socket for the job will be very easy.

And here’s some even better news – with so many manufacturers creating sockets specifically for 1/2 impact wrenches, these accessories tend to be more affordable than most which can help you save a significant amount of money.

Cons of 1/2 Impact Wrench

Now, let’s try to learn more about 1/2 impact wrenches by delving into what it’s not so cool about these kinds of impact wrenches:

  1. Less Torque
  2. Not for Heavy-Duty Jobs
  3. Less Durable

Less Torque

Let’s face it, nothing is more frustrating than when your impact wrench just doesn’t cut it.

I mean, I remember this particular time when was changing the tires on my trusty pickup truck when I found myself struggling with a 1/2 impact wrench. I can’t tell you how hard it was.

So, why are 1/2 weak in terms of torque?

Well, it all comes down to their internal components: A 1/2 impact wrench has a weaker motor and gears, and therefore can’t generate the same level of torque as a 3/4 model. This, of course, will make removing rusty nuts and bolts particularly hard.

Not for Heavy Duty Jobs

Intensive tasks, like removing bolts from large machinery or working on construction sites, call for an. impact wrench with serious muscle.

Think about it, what if you’re on a construction site and you need to tighten bolts on a bulldozer? Or what if you’re a mechanic trying to loosen rusted nuts on a piece of farming equipment? Or maybe you’re a race car enthusiast, removing nuts from your car’s suspension.

These are jobs that require more than just a basic impact wrench – they need a tool with raw power.

And here’s the thing, a 1/2 impact wrench just isn’t built for these intensive tasks.

Its weaker internal components, including motors and gears, can’t generate the necessary torque levels for heavy-duty jobs, meaning that the tool will fall short when attempting to remove stubborn nuts and bolts.

Less Durable

As a tradesman, your tools are an investment. And when that investment doesn’t pay off, it’s beyond frustrating, right?

We’re talking about shelling out your hard-earned cash for a tool that craps out on you after just a few short months: No thank you!

And the sad truth is that if you’re going to use your impact wrench day in and day out a 1/2 impact wrench will not be a prime example of a durable tool.

I mean, most 1/2 affordable impact wrenches are made with cheaper, weaker motors that just can’t handle the demands of a tradesman’s workday, they are mostly made for occasional use.

Think about it, fastening and removing nuts and bolts for hours on end, day in and day out. That’s a tall order for a tool that’s built on the cheap, you’ll need to go for something built to last with stronger and top-quality components, like a 3/4 impact wrench.

Best 3/4 Impact Wrench

Milwaukee 2864-20 Fuel One-Key 3/4″ Impact Wrench


  • Torque: 1200ft-lbs of fastening torque and 1500ft-lbs of nut-busting torque
  • Power Source: Battery
  • Length: 8.59 inches
Milwaukee 2864-20 Fuel One-Key 3/4" High Torque Impact (Bare)

No impact wrench is perfect, but let me tell you that this 2864-20 3/4 impact wrench from Milwaukee comes really close to it!

This tool packs a punch with a brushless motor that cranks out a whopping 1200ft-lbs of fastening torque and 1500ft-lbs of nut-busting torque, making it the ultimate tool for tackling heavy-duty projects that require removing rusty and stubborn nuts and bolts.

No more fumbling around trying to change sockets either as friction ring with a thru-hole design makes it simple to swap out sockets.

You won’t let dead batteries slow you anymore as it comes with REDLITHIUM batteries that provide extended runtime, so you can keep working on lengthy jobs without interruption.

I particularly loved its 4 custom torque profiles, which provided me with unparalleled precision as they gave me the ability to choose between different torque settings, ensuring that the torque output was exactly what was required for a particular job I would tackle.

Even though it doesn’t come in the best packaging it does have other features such as its compact design measuring just 8.59 inches in length, allowing users to easily maneuver it in tight spaces.

But the real magic of this impact wrench lies in its Red Link Plus Intelligence. This cutting-edge technology protects against overload and overheating ensuring that the impact wrench will stand the test of time.


  • Brushless motor delivers up to 1200ft-lbs of fastening torque and 1500ft-lbs of nut-busting torque, making it the perfect tool for heavy duty jobs
  • Red link plus intelligence includes overload and overheating protection to enhance durability
  • Fairly compact design at 8.59 inches in length
  • REDLITHIUM batteries deliver higher battery runtime to tackle intensive tasks
  • 4 custom torque profiles to enhance precision
  • Friction ring with thru-hole design that allows for easy socket changes
  • LED light to work in less illuminated areas
  • Ergonomic rubber overmol


  • Not the best packaging

Best 1/2 Impact Wrench

CRAFTSMAN V20* 1/2 Cordless Impact Wrench


  • Torque: Max 350 ft-lbs of nut-busting torque
  • Power Source: Battery
  • Length: 7.01 inches
CRAFTSMAN V20 RP Cordless Impact Wrench Kit, 1/2 inch, Battery and Charger Included (CMCF900M1)

Ever found yourself looking for an affordable, powerful and reliable 1/2 impact wrench? Yes? Well, in that case, let me introduce you to this CRAFTSMAN V20 1/2 impact wrench.

With its hog ring anvil, changing sockets has never been simpler, eliminating the need for time-consuming and frustrating socket changes, making it an ideal tool for tradesmen who are looking for efficiency and convenience on the job site

This impact wrench can unleash up to 350 ft-lbs of nut-busting torque, which is perfect for loosening nuts and bolts. I mean, it clearly isn’t designed for heavy-duty jobs, but it does output a respectable amount of torque.

Despite its limitations, this tool comes with a variable speed trigger that gives users the chance to adjust the speed of the impact wrench depending on the task at hand, providing greater control and precision, and helping save battery too!

Last but not least, it has built-in LED lights, that will allow you to tackle your projects even in low-light conditions. And, when you’re all done, the fast charger will have you back in action in no time!


  • Convenient hog ring anvil allows for easy socket changes
  • Max 350 ft-lbs of nut busting torque to remove rusty nuts and bolts
  • Variable speed trigger for enhanced tool precision
  • Led lights to improve visibility in low light areas
  • Convenient fast charger included


  • Not for heavy duty jobs

Frequently Asked Questions

Here are some of the most frequent questions regarding 1/2 and 3/4 impact wrenches that came up when researching and building this article.

I though it could be nice to give it a go and answer them myself:

What is 1/2 impact used for?

A 1/2 impact wrench is the go-to for fastening or removing lug nuts and bolts. It’s a particularly common tool in the automotive as it can fasten and remove all nuts and bolts in a car.

But hold up, this little guy isn’t meant for heavy lifting.

When it comes to construction and industrial projects, you’ll want to call in the big guns (aka the 3/4-inch impact wrench) as a 1/2-inch impact just isn’t quite enough to handle those tough, heavy-duty jobs.

So, while the 1/2-inch impact is great for lighter tasks, it’s best to save it for what it was designed for and leave the heavy-duty work to the professionals.

What is 3/4 impact used for?

An 3/4″ impact wrenches are the ultimate heavy-duty tool to remove stubborn nuts and bolts as they comes with strong motors that, when triggered, rapidly rotates with high torque mass impacting its anvil to easily remove fasteners with the attached socket.

It’s the go-to for any task requiring serious torque, whether it’s changing tires on a car, maintaining industrial machinery, or taking on the biggest construction projects.

Its impressive power and stability make it the ideal choice for large fasteners and heavy equipment like bulldozers, excavators, and cranes.

What is the most common impact wrench size?

The clear winner in terms of popularity is none other than the trusty 1/2 inch impact wrench.

This tool size strikes the perfect balance between power and precision, making it ideal for a wide range of tasks.

Whether you’re working on cars, motorcycles, or even just small household appliances, a 1/2-inch impact wrench has got you covered.

And, besides its solid strength, it’s also compact and lightweight, so you can easily take it on the go and maneuver it with ease.

And, if you’re on a budget, you’ll be pleased to know that 1/2 inch impact wrenches are typically more affordable than their larger counterparts meaning that you can get your hands on a powerful and versatile tool without breaking the bank.

Hi, I’m John Smith, a proud husband, and father of two little beautiful girls. After a long time of thinking I made up my mind to build a website around my passion.. helping people who need smart advice from handymen with years of experience.

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