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Torque Converter
Convert torque between Newton-meters (N·m) and foot-pounds (ft-lb) instantly, with both units synced live as you type. Runs entirely in your browser.
🔒 This tool runs entirely in your browser. Your files are never uploaded to a server.
Example shown — edit either field, the other updates instantly.
How it works
- Type a value into either field — Newton-meters or Foot-pounds.
- The other field updates instantly as you type.
- Clear a field to clear both and start over.
The formula
Both units convert through the exact ft-lb-to-N·m factor:
Newton-meters = Foot-pounds × 1.3558179483314004
Foot-pounds = Newton-meters / 1.3558179483314004
Example: a 100 N·m spec (a common lug nut torque) is 100 / 1.3558179483314004 ≈ 73.76 ft-lb.
FAQ
Does anything I type get sent anywhere?
No. The conversion is a simple multiplication done locally in your browser — nothing is uploaded.
What torque unit is this — SAE or metric?
Newton-meters (N·m) is the SI/metric unit, and foot-pounds (ft-lb) is the imperial unit most common in US spec sheets and torque wrenches. Both describe the same physical quantity — a rotational force applied at a distance — just in different measurement systems.
Can I enter a negative number?
No — torque magnitude is what a torque wrench or spec sheet reports, so negative values are rejected with an error rather than converted.
Is this the same as foot-pounds of energy (work)?
The units look identical, but torque (a rotational force) and work/energy (force applied over a distance) are physically different quantities that happen to share the same unit name. This tool is for torque specs — bolt tightening, engine specs, wrench settings — not energy conversions.
How precise is the conversion factor?
It uses the exact conversion, 1 ft-lb = 1.3558179483314004 N·m, derived from the standard definitions of the foot and the pound-force — not a rounded approximation.
How we compare
| Feature | Online Tool Store | Google "convert" search | RapidTables |
|---|---|---|---|
| No file upload — runs in your browser | ✓ | ✓ | ✓ |
| Both units editable and synced at once | ✓ | One direction per search | One pair per page |
| No ads | ✓ | ✓ | Ad-supported |
A quick Google search or RapidTables gets you one conversion at a time, then makes you re-search or scroll to a different table for the reverse direction. Torque Converter keeps both units in view and in sync, so you see Newton-meters and foot-pounds together from a single number.