Torque converter — N·m, lb-ft, lb-in and kgf·m

Tightening specs come in whatever unit the manual was written in. This page turns them into the unit your torque wrench is actually marked in.

How to use it

1
Type into any row — say N·m or lbf·ft. The results appear immediately, no button needed.
2
Need a combined figure? Fill in two rows, for example N·m and kgf·m, and they are added together before converting.
3
Set how many digits you want (4–12) and click a result to copy the plain number.

Exact conversion factors

These are the definitions the calculator uses. Nothing here is rounded for convenience — where a value is exact by definition, it says so.

1 lbf·ft = 1.3558179483 N·m · 1 N·m = 0.737562149 lbf·ft
1 kgf·m = 9.80665 N·m = 7.23301385 lbf·ft
1 lbf·ft = 12 lbf·in · 1 lbf·in = 0.112984829 N·m
80 lbf·ft = 108.465 N·m · 120 N·m = 88.5075 lbf·ft

FormulaN·m = lbf·ft × 1.3558179483 · N·m = kgf·m × 9.80665 · lbf·ft = lbf·in ÷ 12

Torque conversion table — every unit

One of each unit, converted into the three units people ask for most.

Unit	N·m	lbf·ft	kgf·m
1 kN·m	1 000 N·m	737.562 lbf·ft	101.972 kgf·m
1 N·m	1 N·m	0.737562 lbf·ft	0.101972 kgf·m
1 N·cm	0.01 N·m	0.00737562 lbf·ft	0.00101972 kgf·m
1 kgf·m	9.80665 N·m	7.23301 lbf·ft	1 kgf·m
1 lbf·ft	1.35582 N·m	1 lbf·ft	0.138255 kgf·m
1 lbf·in	0.112985 N·m	0.0833333 lbf·ft	0.0115212 kgf·m
1 ozf·in	0.00706155 N·m	0.00520833 lbf·ft	0.000720078 kgf·m

N·m → lbf·ft, kgf·m — quick values

N·m	lbf·ft	kgf·m
0.5 N·m	0.368781 lbf·ft	0.0509858 kgf·m
1 N·m	0.737562 lbf·ft	0.101972 kgf·m
2 N·m	1.47512 lbf·ft	0.203943 kgf·m
3 N·m	2.21269 lbf·ft	0.305915 kgf·m
5 N·m	3.68781 lbf·ft	0.509858 kgf·m
10 N·m	7.37562 lbf·ft	1.01972 kgf·m
20 N·m	14.7512 lbf·ft	2.03943 kgf·m
25 N·m	18.4391 lbf·ft	2.54929 kgf·m
50 N·m	36.8781 lbf·ft	5.09858 kgf·m
100 N·m	73.7562 lbf·ft	10.1972 kgf·m
250 N·m	184.391 lbf·ft	25.4929 kgf·m
1 000 N·m	737.562 lbf·ft	101.972 kgf·m

How this converter works

The number to keep in your head is 1.356: one pound-foot is 1.3558 N·m. A spec of 80 lb-ft is 108.5 N·m, and a wheel nut at 120 N·m is 88.5 lb-ft. Small fasteners are often given in pound-inches instead, twelve times smaller — mixing those up over-torques a bolt by an order of magnitude.

Older Japanese and European manuals use kgf·m, which is 9.807 N·m. A figure like "11 kgf·m" is 107.9 N·m, close enough to the 80 lb-ft example above to show how one tightening spec travels between three unit systems.

Notes and abbreviations

1 lbf·ft = 1.3558 N·m; 1 N·m = 0.7376 lbf·ft
1 kgf·m = 9.80665 N·m
1 lbf·ft = 12 lbf·in — check which one a small-fastener spec means

Questions

What is 100 N·m in lb-ft?

73.7562 lb-ft, or 10.1972 kgf·m.

Is torque the same as energy since both are N·m?

The units look alike but the quantities differ — torque is force applied at a distance, energy is force through a distance. They are never interchangeable.

My manual says 25 kgf·m. What should I set?

245.166 N·m, or 180.825 lb-ft.