Free tools Windows power users keep installed
One-click scans. No signup required.
Torque is a rotational turning effect; horsepower measures how quickly work is done, combining torque with rotational speed. In U.S. customary units, horsepower ≈ torque in pound-feet (lb-ft) × engine speed in revolutions per minute (RPM) ÷ 5,252. The two figures are related, but neither peak number alone tells you how a vehicle will perform: the usable RPM range, gearing, vehicle mass, and intended use all matter.
What is torque?
Torque describes a twisting or turning effect. In a vehicle, it is commonly reported in pound-feet (lb-ft) in the United States or newton-metres (N·m) in many other markets. An engine or motor produces torque at its rotating shaft; the drivetrain then uses gearing to deliver turning force to the wheels.
A torque figure needs its RPM context. An engine might make its stated peak torque only within a particular part of its operating range, so the peak alone does not show how much torque is available during ordinary driving. Mitsubishi explains the relationship between torque and horsepower in its overview of torque versus horsepower.
What is horsepower?
Horsepower is a unit of power: it describes how quickly work is done. For a rotating engine or motor, power depends on both the torque being produced and how fast the shaft is turning. A torque figure describes turning effect; a horsepower figure expresses that turning effect at a given rotational speed.
#1 Best Overall
- Durable Ratchet Head: Made from Hardened treated Chrome Vanadium steel alloy (Cr-V) Corrosion-Retardant: Satin Finish. Made in Taiwan
- Easy Storage: A sturdy plastic storage case is included. Non-Slip Grip: Knurled handle
- Easy to Read: High Contrast & Dual Range Scale. Accurate: Pre-Calibrated to ± 4%
- Accessories included: 1/2" Drive 5" long Extension Bar
- Simple and Reliable: “Click” sound tells the preset torque value is reached. Stop applying force when you hear and feel it.
For torque measured in lb-ft and speed measured in RPM, the customary calculation is:
Horsepower ≈ torque (lb-ft) × RPM ÷ 5,252
The constant 5,252 converts those specific units. Do not use this version of the equation with torque in N·m or power in kilowatts without converting units first. Power may be listed as horsepower, metric horsepower (PS), or kilowatts (kW), so check the unit before comparing vehicle specifications. Ford Australia summarizes engine power measurement units and rating terminology in its guide to engine power measurements.
Rank #2
- PRECISE & HIGH QUALITY - Manufactured in Taiwan, our torque wrench is engineered for superior precision. It ships pre-calibrated to +/- 4% accuracy, ensuring dependable results every time. Includes a calibration certificate with a trackable serial number for your assurance.
- DURABLE - Built to last, featuring a reinforced ratchet gear head made from hardened, heat-treated Chrome Vanadium alloy steel for maximum strength and durability.
- LONGEVITY - Protect your investment with our proprietary Electro-Black finish, providing advanced rust and corrosion resistance for extended tool life.
- PERFORMANCE - Easily read and set torque levels with our patent-pending dual-range scale. The high-contrast, yellow-on-black markings are designed for easy visibility, even in low-light conditions.
- OMFORT - Equipped with a reversible ratchet head that drives in both directions and measures torque in a clockwise direction. The ergonomic, knurled handle ensures a non-slip, comfortable grip, reducing hand fatigue.
How are torque and horsepower different?
They describe different aspects of output, even though they are mathematically connected. Torque is the turning effect at a particular speed; horsepower is the rate of work represented by that torque at that speed. As RPM changes, the relationship changes too. A high torque peak does not automatically mean high power throughout the rev range, and a horsepower peak does not reveal how much output is available at every engine speed.
That is why specifications should include the speed at which peak torque and peak power occur, when those details are available. A broad useful range can matter more in normal driving than a single peak reached briefly. Subaru also explains horsepower in the context of car performance in its horsepower overview.
Crashes, No Sound, or Screen Glitches?
Random freezes, missing sound and display glitches usually trace back to one bad driver. Find and replace yours safely.Free scan · under a minutePC Slower Than It Used to Be?
A free scan shows the junk files, broken settings and background clutter dragging Windows down - then fixes them in one click.Free scan · Windows 10 & 11Rank #3
- 【9-in-1 Torque Solution】Complete set includes 1/4", 3/8", and 1/2" drive click torque wrenches plus 6 essential adapters (extension bars, universal joint, drive adapters) securely stored in a sturdy portable case.
- 【High Precision & Dual Scales】Factory-calibrated to ±3% accuracy with included certificate; features dual-range scales (1/4": 10-220 in.lb, 3/8": 5-45 ft.lb, 1/2": 10-170 ft.lb) for versatile application coverage.
- 【Clear & Safe Audible Click】Upgraded loud "Click" sound provides a distinct, reliable signal (strong over 5 N.m, subtle under) when preset torque is reached, preventing overtightening and ensuring safety.
- 【Smooth 72-Tooth Ratchet & Quick Release】Reversible 72-tooth ratchet head offers a low 5° arc swing for use in tight spaces and smooth operation in both directions. Quick-release button ensures secure socket changes.
- 【Durable Construction & Wide Use】Hardened Cr-V steel ratchet heads and phosphated adapters resist wear; aerospace aluminum handles ensure lightweight strength and corrosion resistance. Ideal for precise torque on bikes, motorcycles, cars, trucks, wheels, and industrial applications. Backed by 24-month support.
How to compare torque and horsepower when choosing a vehicle
Use the figures as starting points, not a stand-alone verdict. When comparing vehicles, check:
- Output across the RPM range: Look for torque and power curves, or at least the RPM at which each peak occurs. This helps show whether the output is concentrated at one speed or available across a wider operating range.
- Gearing and traction: Gear ratios affect how engine or motor output reaches the wheels, while available grip affects how effectively that force can be used.
- Vehicle mass: The same output can produce different results in vehicles of different weights.
- Intended use: Stop-start driving, towing, and sustained highway operation place different demands on a powertrain. Consider the conditions you care about rather than assuming that one headline number predicts all of them.
- Units and rating basis: Confirm whether figures use lb-ft or N·m and horsepower, PS, or kW. Also check whether ratings are stated on a comparable basis; not every published engine rating follows the same procedure.
SAE J2723 describes procedures for certifying production-engine net power and torque ratings under SAE J1349, or gross engine power under SAE J1995. That limited scope does not establish that every manufacturer’s published figure uses the same procedure. See the standard’s certification description when rating methodology is relevant.
Rank #4
- 【8-in-1 Torque Wrench Set】 Includes 1/4, 3/8, 1/2 inch drive torque wrenches that meet your different needs. 5Pcs Adapter: 1/4"Extension bar(4''), 3/8"Extension bar(6''), 1/2"Extension bar(5''), 3/8" Universal Joint, 1/2" to 3/8" Adapter with a sturdy plastic case for storage and portability
- 【Dual range scale & High Precision】 1/4 inch 10-230in.lb/1.1-26.0Nm with 1 in.lb micro-adjustment, 3/8 inch 5-50ft.lb/6.8-67.8Nm with 0.25 ft.lb micro-adjustment, 1/2 inch 10-180ft.lb/13.6-244.1Nm with 1 ft. lb micro-adjustment. Each wrench undergoes strict and specialized instrument testing before leaving the factory to ensure accuracy within ±3% and is provided with a formal calibration certificate
- 【Safe & Reliable】 This torque wrench set has been upgraded to have a louder "Click" sound, ensuring a clear and stronger click sound when the torque value exceeds 5 Nm, subtler click at lower than 5 Nm. The distinct click sound indicates that the preset torque has been reached, signaling you to stop applying force
- 【Releasable & Dual Direction】These torque wrenches has a quick release button with which accessories can easily be installed and removed, the accessories can grip and is not easy to fall down. With 72-tooth reversible ratchet head, it can be used in both clockwise and counterclockwise directions
- 【High Quality and Durable】 The torque wrench ratchet head is made from hardened treated Cr-Mo Steel for longevity. Handle crafted from high-grade aerospace aluminum for durability, and corrosion resistance. All adapters are treated with phosphating, with stronger wear resistance and a longer lifespan
Do electric cars have torque and horsepower?
Yes. Electric motors produce mechanical power through torque and rotational speed, just as the relationship requires. Their torque-speed curves can differ from those of combustion engines and from one motor type to another, so a motor’s peak torque figure should not be treated as a complete description of its output at every speed. Natural Resources Canada discusses electric motor operation in its electric motors efficiency reference guide; Renault Group also explains power output in an electric car motor.
Quick Recap
Best Value
- ±3% HIGH PRECISION AND COOL APPEARANCE: 1/2 inch drive torque wrench (10-170ft.-lb/13.6-230.5Nm)has a calibration error range of ±3%, high precision, and comes with a corresponding serial number, which is easy to trace the original data, and you can use it with confidence.Hairich torque wrench not only has superior quality but also has a superior appearance. The classic combination of black and red is fashionable and textured, allowing you to enjoy a visual feast during use.
- PREMIUM MATERIAL AND DURABLE: Experience the ultimate durability and antiskid with the torque wrench. The main body of Hairich torque wrench set is made of chrome vanadium steel alloy, which is more strong and more durable. The head of the inch-pound torque wrench adopts a ratchet design with a reversing device to improve work efficiency. The square knurled handle is made of aluminum titanium alloy, which is ergonomic and comfortable to hold for long-time use.
- DUAL SCALE AND QUICK SETTING: Laser Printed by dual-range（ft-lb and Nm). Our professional torque wrench is easy to read and provides direct unit conversion, When the set torque value is reached, the torque wrench will make an audible and felt click to remind you to stop applying force. Pull down the lock knob and hold it until the torque setting is completed. Release the hand, and the lock knob will automatically rebound back to lock the value.
- ERGONOMIC DESIGN AND POWERFUL: Every design of our industrial torque wrench conforms to ergonomic, easy to handle.72-tooth ratchet, 5° ratcheting arc head, a quick-release button for easy loading and unloading, and an aluminum non-slip handle for excellent grip and control. A recent research review that, 72-tooth ratchets are very professional tooth ratchets, you just only rotate 5 degrees to finish it. Not easy to slip and wear, can be used in small spaces, and is more durable and powerful.
- EASY OPERATION AND SAFETY: Thanks to its bidirectional drive ratchet head, our torque wrench can be measured both clockwise and counterclockwise. When the set torque value is reached, a "click" sound will remind you to stop applying force to prevent damage to the item due to excessive torque. Notice: At low Nm settings under 5 Nm the "click" sound can be too light to hear.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
