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The Torque Converter (General) is a universal tool for converting between all common units of torque (also called moment of force). Whether you need to convert newton-meters to foot-pounds, inch-pounds to kilogram-force meters, or any other combination, this converter delivers instant, accurate results.
Torque is the rotational equivalent of linear force, calculated as τ = F × r (force times lever arm distance). It describes the tendency of a force to rotate an object around an axis. Torque is fundamental to mechanical engineering, automotive technology, aerospace, construction, and any field involving rotational motion or fastener tightening.
The newton-meter (N·m) is the SI unit of torque and is used internationally in engineering specifications, ISO standards, and scientific research. The foot-pound (ft·lb) is the dominant torque unit in American automotive, aerospace, and mechanical engineering. The inch-pound (in·lb) is used for smaller fasteners and precision applications. The kilogram-force meter (kgf·m) appears in some European and Asian specifications. The dyne-centimeter (dyn·cm) is the CGS unit, used in some specialized scientific applications.
Our converter uses newton-meters as the hub unit, converting through it to ensure maximum precision across all 20 possible unit combinations. All conversion factors are traceable to international metrology standards.
The converter first translates the input to newton-meters, then converts to the target unit. Key conversion factors: 1 ft·lb = 1.35582 N·m, 1 in·lb = 0.112985 N·m, 1 kgf·m = 9.80665 N·m (exact), 1 dyn·cm = 10-7 N·m (exact). Note that 1 ft·lb = 12 in·lb exactly.
Torque values in everyday applications: a car lug nut requires about 100-150 N·m (74-111 ft·lb), a bicycle pedal is about 40 N·m (30 ft·lb), a modern car engine produces 200-500 N·m (148-369 ft·lb), and a large diesel truck engine can produce 2000+ N·m (1475+ ft·lb). Always use a calibrated torque wrench for safety-critical fasteners.
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100 N·m ≈ 73.76 ft·lb
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50 ft·lb = 600 in·lb
Torque (moment of force) is the rotational equivalent of linear force. It equals force times the perpendicular distance from the axis of rotation: τ = F × r. SI unit: newton-meter (N·m).
Torque and work have the same dimensions (force × distance) but are different quantities. Torque is a vector (has direction), while energy is a scalar. The units are intentionally kept distinct: N·m for torque, joules (J) for energy.
Foot-pounds (ft·lb) in the US, newton-meters (N·m) internationally. Most torque wrenches sold in the US display both units.
Multiply by 1.35582. For example, 100 ft·lb = 135.582 N·m. A quick mental approximation: multiply by 1.36 or divide by 0.74.
1 foot-pound = 12 inch-pounds exactly (since 1 foot = 12 inches). So in·lb = ft·lb × 12.
Under-tightening leads to loose connections and potential failure. Over-tightening can strip threads, crack components, or cause bolt fatigue. Specified torque values ensure proper clamping force.
Typical passenger cars produce 200-400 N·m (148-295 ft·lb). Sports cars may reach 500-800 N·m. Large diesel trucks produce 1500-2500 N·m.
Kilogram-force meters appear in some European and Asian torque specifications, particularly for older machinery, bicycles, and some automotive manuals. 1 kgf·m = 9.80665 N·m.
For safety-critical fasteners (cylinder heads, wheel lugs), ±5% accuracy is typical. For general assembly, ±10% is often acceptable. Always use a calibrated torque wrench.
In engineering, 'torque' usually refers to twisting/rotational force (e.g., engine output, bolt tightening), while 'moment' refers to bending force (e.g., beam loading). Physically, they are the same quantity.
Roboculator Team
The Roboculator Team explains calculations, planning tools, and practical formulas in clear language for real-life situations.
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