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Engineer's Reference
Unit Converters & Torque Charts
The conversions technicians reach for every day — pressure, torque, flow, temperature — plus metric bolt torque references. Bookmark it.
Pressure
kPa100
MPa0.1
psi14.5038
atm0.9869
mH₂O10.1972
Torque
lbf·ft0.7376
lbf·in8.8507
kgf·m0.102
Flow
L/s0.2778
L/min16.6667
US GPM4.4029
Temperature
°F33.8
K274.15
Length
m0.001
inch0.0394
ft0.0033
Mass / Force
lb2.2046
ton (metric)0.001
kN (≈ mass)0.0098
Metric bolt torque chart — coarse thread, dry (N·m)
| Thread | Grade 8.8 | Grade 10.9 |
|---|---|---|
| M6 | 10 N·m | 14 N·m |
| M8 | 24 N·m | 34 N·m |
| M10 | 47 N·m | 67 N·m |
| M12 | 81 N·m | 116 N·m |
| M14 | 129 N·m | 184 N·m |
| M16 | 197 N·m | 282 N·m |
| M20 | 385 N·m | 550 N·m |
| M24 | 665 N·m | 950 N·m |
| M30 | 1310 N·m | 1870 N·m |
| M36 | 2280 N·m | 3260 N·m |
Guide values at ~90% of proof load, unlubricated. Lubricated, plated or critical-joint fasteners need the OEM specification — torque wrenches and calibration are available through our register.
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