Torque Calculator
Calculate torque from force and distance, or convert between torque units
Torque Calculator
Calculate torque from force and lever arm distance (τ = F × d), or convert between torque units. Supports Newton-meters, foot-pounds, inch-pounds, kilogram-centimeters, and more.
🔧 Torque Calculator
📊 Calculation Results
📋 Common Torque Values
| Application | N·m | ft·lbf | kgf·cm |
|---|---|---|---|
| 🔩 M6 bolt (typical) | 10 | 7.4 | 102.0 |
| 🔩 M8 bolt (typical) | 25 | 18.4 | 254.9 |
| 🚲 Bicycle pedal | 35 | 25.8 | 356.9 |
| 🚗 Car wheel lug nut | 110 | 81.1 | 1,121.5 |
| ⚡ Spark plug | 25 | 18.4 | 254.9 |
| 🔧 Oil drain plug | 35 | 25.8 | 356.9 |
| 🏗️ Cylinder head bolt | 90 | 66.4 | 917.6 |
| 🚛 Truck lug nut | 600 | 442.5 | 6,117.2 |
📚 Understanding Torque
What is Torque?
Torque (τ) is a measure of the rotational force applied to an object. It is the product of force and the perpendicular distance from the axis of rotation to the line of action of the force.
Torque Formula
Torque is calculated as τ = F × d × sin(θ), where F is the applied force, d is the lever arm distance, and θ is the angle between the force and the lever arm.
Practical Applications
Torque is essential in automotive engineering (engine specs, bolt tightening), construction (fastener specifications), manufacturing, and mechanical design.
Torque Formulas & Relationships
Torque is a vector quantity that measures the tendency of a force to rotate an object about an axis. The SI unit of torque is the Newton-meter (N·m). In the imperial system, torque is commonly measured in foot-pounds (ft·lbf) or inch-pounds (in·lbf).
Key Formulas
Torque = Force × Distance (perpendicular)
General formula with angle between force and lever arm
Power = Torque × Angular velocity
Torque vs Power
While torque measures the rotational force, power measures the rate at which work is done. In engines, torque determines the "pulling" ability while horsepower determines how fast that pulling can be done. The relationship is: Power (W) = Torque (N·m) × Angular Velocity (rad/s).
Unit Conversion Reference
Newton-meter to foot-pound
Foot-pound to Newton-meter
Newton-meter to kilogram-centimeter
Foot-pound to inch-pound