Torque Unit Conversion

FAQ

• What is torque and how is it different from force?
  Torque is a rotational force that causes an object to rotate around an axis. It's calculated as Force × Distance (lever arm). While force causes linear motion, torque causes rotational motion. For example, using a wrench to turn a bolt applies torque.
• Why are there different torque units for different applications?
  Different industries use different units based on scale and tradition. N·m is the SI standard for engineering, lbf·ft for automotive in the US, kgf·cm for smaller mechanisms, and mN·m for precision instruments. Each unit suits different torque ranges and measurement precision needs.
• How do I convert between metric and imperial torque units?
  Key conversions: 1 N·m = 8.85 lbf·in = 0.738 lbf·ft, 1 kgf·m = 7.23 lbf·ft = 86.8 lbf·in. For example, to convert 50 N·m to lbf·ft: 50 × 0.738 = 36.9 lbf·ft. The calculator handles these conversions automatically.
• What are typical torque values in different applications?
  Smartphone screws: 0.1-0.5 N·m, bicycle components: 5-25 N·m, car wheel nuts: 80-120 N·m, engine bolts: 20-200 N·m, industrial machinery: 100-10,000 N·m. These ranges help understand torque requirements in various applications.
• What is the relationship between torque and power?
  Power = Torque × Angular velocity. In rotating machinery, high torque at low speed or low torque at high speed can produce the same power. For example, electric motors often provide high torque at low speeds, while gas turbines provide high speed with lower torque.
• How accurate are torque unit conversions?
  The conversions use internationally defined standards. For example, 1 N·m = exactly 1 kg·m²/s² by definition. The calculator maintains precision suitable for engineering calculations, fastener specifications, and precision assembly work, typically displaying 2-3 decimal places.