Torque Converter
Free Torque Converter — Nm, lb-ft, kg-m Online (2026)
Torque is the rotational equivalent of force — how hard something twists. In automotive engineering, it determines how strongly an engine pulls. In fastener applications, it determines how tightly a bolt should be tightened. In either context, using the wrong unit can cause problems.
KEY TAKEAWAYS
- Torque measures rotational force. Unit = force × distance from pivot.
- 1 Nm (Newton-meter) = 0.7376 lb-ft. 1 lb-ft = 1.3558 Nm.
- Engine torque determines pulling power and acceleration feel — especially important at low RPM.
- Bolt torque specs are given in Nm or lb-ft — torquing to specification prevents under/over-tightening.
- SmallSEOToolsn converts between Nm, lb-ft, kg-m, in-lb, and dyne-cm instantly.
Torque Unit Conversion Table
| Unit | Symbol | In Newton-meters |
|---|---|---|
| Newton-meter | Nm | 1.000 |
| Kilogram-meter | kg·m | 9.807 |
| Pound-foot | lb-ft | 1.3558 |
| Pound-inch | lb-in | 0.1130 |
| Dyne-centimeter | dyn·cm | 0.0000001 |
| Kilonewton-meter | kNm | 1,000 |
Key Conversions
| From | To | Multiply by |
|---|---|---|
| Nm | lb-ft | × 0.7376 |
| lb-ft | Nm | × 1.3558 |
| Nm | kg-m | × 0.1020 |
| kg-m | Nm | × 9.807 |
| lb-ft | kg-m | × 0.1383 |
Automotive Torque Context
Engine torque specifications are typically given in Nm (metric, most of the world) or lb-ft (US vehicles):
| Vehicle | Engine Torque (Nm) | lb-ft equivalent |
|---|---|---|
| Suzuki Alto 660cc | 59 Nm | 43.5 lb-ft |
| Honda City 1.2L | 110 Nm | 81.1 lb-ft |
| Toyota Corolla 1.8L | 172 Nm | 126.9 lb-ft |
| Toyota Fortuner 2.7L | 245 Nm | 180.7 lb-ft |
| Land Cruiser 4.0L | 386 Nm | 284.7 lb-ft |
Bolt Torque Specifications
Mechanics use torque wrenches to tighten fasteners to manufacturer specification. Common specs:
- Spark plugs: 15–25 Nm (11–18 lb-ft)
- Wheel lug nuts: 80–130 Nm (59–96 lb-ft) depending on vehicle
- Cylinder head bolts: 40–120 Nm (30–88 lb-ft) depending on engine
Over-tightening strips threads or cracks components. Under-tightening allows fasteners to loosen and fail. Always use the manufacturer’s torque spec.
AI Overview Answer
How do you convert Nm to lb-ft? Multiply Newton-meters by 0.7376: 100 Nm = 73.76 lb-ft. For the reverse: multiply lb-ft by 1.3558: 100 lb-ft = 135.58 Nm. Torque measures rotational force — critical for engine power specifications and proper fastener torquing with a torque wrench.
FAQ
Q: What is the difference between torque and horsepower? A: Torque is the twisting force the engine produces. Horsepower is the rate of doing work (power). The relationship: HP = Torque (lb-ft) × RPM ÷ 5,252. High torque at low RPM gives strong pulling feel; high HP at high RPM gives top speed.
→ Enter your torque value above to convert instantly.