Torque is a measure of rotational force applied to an object around an axis. It is calculated as force multiplied by the perpendicular distance from the axis of rotation: τ = F × r. The SI unit of torque is the Newton-meter (N·m), while Imperial systems use pound-foot (lb·ft) and metric engineering contexts use kilogram-force meter (kgf·m). Torque is a vector quantity — it has both magnitude and direction (clockwise or counterclockwise).
Torque Converter
Convert between Newton-meters, pound-feet, kilogram-force meters, and 12+ other torque units with NIST-verified precision.
Conversion Formula
1 N·m = 0.7375621 lb·ft
Common Torque Conversions
Quick reference table| From | To | Result |
|---|
What is Torque?
Torque (also called moment or moment of force) is the rotational equivalent of linear force. It measures the tendency of a force to rotate an object about an axis, fulcrum, or pivot. Just as force is a push or pull, torque can be thought of as a twist.
SI Unit
Newton-meter (N·m) — the standard unit in the International System of Units.
Imperial Unit
Pound-foot (lb·ft or lbf·ft) — widely used in automotive and mechanical engineering in the US.
Formula
τ = F × r × sin(θ), where F is force, r is distance from pivot, and θ is angle between them.
Dimension
[M L² T⁻²] — same as energy, but torque is a vector while energy is a scalar.
How to Use This Torque Converter
Our torque converter is engineered for speed, precision, and ease of use. Follow these steps to get accurate conversions instantly.
-
Select Source Unit Choose the torque unit you want to convert from (N·m, lb·ft, kgf·m, etc.).
-
Select Target Unit Pick the torque unit you want to convert to from the second dropdown.
-
Enter Torque Value Type your torque value — the result appears instantly as you type.
-
Swap Units Click the swap button to instantly reverse the conversion direction.
-
View Formula The exact conversion formula is displayed below for verification.
-
Reference Table Check the common conversions table for quick reference values.
Torque Applications in Engineering
Torque is fundamental to mechanical engineering, automotive design, aerospace, and countless industrial applications. Understanding torque units and conversions is essential for professionals worldwide.
-
Automotive Engineering Engine torque output, wheel torque, lug nut specifications, and drivetrain design all require precise torque measurements.
-
Bolt Tightening Proper bolt torque is critical for structural integrity. Under-torquing causes loosening; over-torquing causes bolt failure.
-
Electric Motors Motor torque ratings determine load capacity. Converting between N·m and lb·ft is essential for international specifications.
-
Aerospace Aircraft fasteners, turbine engines, and control surfaces all require precise torque specifications for safety.
-
Power Transmission Gears, shafts, and couplings transmit torque. Converting between units is essential for global engineering collaboration.
-
Robotics Joint torque specifications determine robot payload capacity and movement precision in industrial automation.
Common Torque Reference Values
Real-world examples| Application | Typical Torque | In N·m |
|---|---|---|
| Car lug nuts (sedan) | 80–120 lb·ft | 108–163 N·m |
| Spark plugs | 10–20 lb·ft | 14–27 N·m |
| Bicycle pedals | 25–35 lb·ft | 34–47 N·m |
| Engine oil drain plug | 20–30 lb·ft | 27–41 N·m |
| Small electric motor | 0.5–2 N·m | 0.5–2 N·m |
| Car engine (mid-size) | 150–250 lb·ft | 203–339 N·m |
| Truck engine (heavy-duty) | 400–1000 lb·ft | 542–1356 N·m |
| Formula 1 engine | ~400 lb·ft | ~542 N·m |
| Wind turbine (large) | 2–10 MN·m | 2,000,000–10,000,000 N·m |
| Human arm (max effort) | ~50 N·m | 50 N·m |
Why Professionals Choose ASLI FORM
Built with precision engineering and premium design, our torque converter meets the demands of mechanical engineers, automotive technicians, and physicists.
-
NIST-Verified Precision Results accurate to 10 significant digits using official conversion factors.
-
Instant Results Real-time conversion as you type — no buttons to click, no waiting.
-
Works Offline All calculations run locally in your browser. Perfect for workshop use.
-
Universal Compatibility From basic keypad phones to 4K displays — works on every device.
-
Zero Tracking No cookies, no analytics, no data collection. Your privacy is absolute.
-
Free Forever No subscriptions, no hidden fees, no usage limits, no advertisements.
Frequently Asked Questions
To convert Newton-meters (N·m) to pound-feet (lb·ft), multiply by 0.7375621. For example, 100 N·m equals 73.76 lb·ft. To convert in the opposite direction, multiply lb·ft by 1.3558179 to get N·m. This conversion factor is derived from the relationship between Newtons and pounds-force, and between meters and feet.
Force is a push or pull acting on an object in a straight line, measured in Newtons (N) or pounds-force (lbf). Torque is rotational force — it's the force applied at a distance from a pivot point, causing rotation. Torque equals force multiplied by distance (τ = F × d), measured in Newton-meters (N·m). While force causes linear acceleration, torque causes angular acceleration.
Technically, lb·ft (pound-foot) is the correct unit for torque, while ft·lb (foot-pound) is the unit for work or energy. However, in common usage, especially in automotive contexts, the terms are often used interchangeably. The numerical values are identical (1 lb·ft = 1 ft·lb = 1.3558179 N·m), but the conceptual meaning differs: torque is a vector (rotational force), while work is a scalar (energy transferred).
Yes, the ASLI FORM Torque Converter is 100% free forever. There are no registration requirements, no usage limits, no subscription fees, and no hidden charges. We do not display advertisements and we do not collect any personal data. Our mission is to provide a premium engineering tool that everyone can use without barriers.
Our converter delivers results accurate to 10 significant digits using conversion factors from official standards including NIST (National Institute of Standards and Technology), ISO, and BIPM (International Bureau of Weights and Measures). This level of precision is suitable for engineering calculations, automotive specifications, aerospace applications, and professional mechanical work.
Yes. Once the page loads, all calculations happen locally in your browser. There is no server-side processing, no API calls, and no internet dependency for conversions. This makes the tool perfect for workshop use, field engineering, remote locations, and anywhere connectivity is limited or unavailable.
We support 15+ torque units across multiple measurement systems:
- SI Units: Newton-meter (N·m), kilonewton-meter (kN·m), millinewton-meter (mN·m), micronewton-meter (μN·m)
- Metric Engineering: Kilogram-force meter (kgf·m), gram-force centimeter (gf·cm), kilogram-force centimeter (kgf·cm)
- Imperial/US: Pound-foot (lb·ft), pound-inch (lb·in), ounce-inch (oz·in), poundal-foot (pdl·ft)
- CGS: Dyne-centimeter (dyn·cm), dyne-meter (dyn·m)
Absolutely. Our converter is designed with a mobile-first responsive approach and works perfectly on every device — from basic keypad phones to 4K desktop displays. The interface adapts intelligently: desktops get a sidebar, tablets get a collapsible sidebar, and mobile devices get optimized dropdowns. Touch interactions, scroll snapping, and momentum scrolling are all optimized for mobile workshop use.
Torque and horsepower are related through rotational speed (RPM). The formula is: HP = (Torque × RPM) / 5252 (when torque is in lb·ft). At 5252 RPM, torque and horsepower are numerically equal. This relationship is fundamental in automotive engineering — torque determines acceleration force, while horsepower determines how fast work can be done. Our converter helps you work with torque values that feed into these calculations.
Torque is critical in automotive engineering for multiple reasons:
- Engine performance: Engine torque output determines acceleration and towing capacity
- Bolt specifications: Proper lug nut, head bolt, and fastener torque ensures safety
- Drivetrain design: Gears, shafts, and differentials must handle specific torque loads
- Brake systems: Brake caliper bolts require precise torque for safe operation
- Suspension: Control arm and strut bolts need correct torque for handling
We welcome feedback from our users. You can reach our support team through multiple channels:
- Phone: +91-7011993433 (Mon-Sat, 9 AM to 7 PM IST)
- WhatsApp: Same number with pre-filled message
- Email: support@asliform.in
No. We do not collect, store, or transmit any of the values you enter. All calculations happen entirely in your browser's memory and are destroyed the moment you close the tab. We use no analytics scripts, no cookies for tracking, and no third-party services that could see your conversions. Your privacy is absolute and non-negotiable.
Kilogram-force meter (kgf·m) is a metric engineering unit based on gravitational force, while Newton-meter (N·m) is the SI unit based on fundamental physics. The conversion is: 1 kgf·m = 9.80665 N·m (exactly, by definition). The kgf·m unit is still used in some countries for automotive and mechanical engineering, but N·m is the international standard. Our converter handles both seamlessly.
For educational institutions, blogs, and non-commercial websites, you can link to our converter freely. For commercial embedding or white-label use, please contact our business team at support@asliform.in to discuss licensing options. We offer custom solutions for businesses that need torque conversion integrated into their applications.
Need More Engineering Tools?
Explore our complete suite of 150+ free tools including unit converters, calculators, PDF tools, code editors, and AI-powered utilities.