Convert pressure (psi, MPa, bar, kPa, atm) and torque (Nm, ft-lb, in-lb) instantly. Two converters in one, with formulas and a common-values reference table.
The pressure converter above moves between psi, MPa, bar, kPa, atmospheres and pascals. These come up in tyre pressures, hydraulics, plumbing, and engineering specs — where a value given in one unit (say MPa on a datasheet) needs checking against a gauge that reads another (like psi). Enter a value in either box to convert instantly.
Torque is a different quantity from pressure, so it has its own converter below. It handles newton-metres (Nm), foot-pounds (ft-lb) and inch-pounds (in-lb) — the units used for tightening bolts and fasteners. "Nm to ft-lb" is one of the most searched conversions because tools and manuals mix the two.
A car manual specifies a bolt torque of 90 Nm but your torque wrench is marked in foot-pounds. In the torque converter, select Nm in the "From" box and ft-lb in the "To" box, then enter 90. Multiplying by 0.7376 gives about 66.4 ft-lb. For pressure, if a datasheet lists 0.5 MPa and your gauge reads psi, the pressure converter multiplies by 145.04 to give about 72.5 psi.
Pressure and torque are grouped together here for convenience, but it’s worth understanding that they measure fundamentally different things — you can’t convert one into the other. Pressure is force spread over an area, measured in units like psi (pounds per square inch), pascals, bar and atmospheres. It describes things like tyre inflation, hydraulic systems, water pressure and gas cylinders. Torque is a rotational or twisting force, measured in newton-metres or foot-pounds, and it describes how tightly a bolt or fastener is done up. What these two have in common — and why people often need both — is that each mixes metric and imperial units in everyday use, so conversion is constantly required. Mechanics deal with torque specs in Nm and ft-lb depending on whether a manual is metric or imperial; tradespeople and engineers meet pressure in psi, bar and MPa across different gauges and datasheets. Keeping both converters on one page means you don’t have to hunt for separate tools when a single job involves both.
| Value | Equivalent |
|---|---|
| 1 MPa | 145.0 psi |
| 1 bar | 14.50 psi |
| 1 psi | 6.895 kPa |
| 100 psi | 0.689 MPa |
| 1 atm | 14.70 psi |
| 1 Nm | 0.7376 ft-lb |
| 1 ft-lb | 1.356 Nm |
| 50 Nm | 36.88 ft-lb |
| 100 ft-lb | 135.6 Nm |
| 10 Nm | 88.51 in-lb |
Some pressure and torque figures recur often enough to be worth recognising. For pressure, standard atmospheric pressure is about 14.7 psi, or roughly 1 bar (more precisely 1.013 bar). Car tyres are typically inflated to around 32–35 psi, which is about 2.2–2.4 bar or 220–240 kPa. One megapascal is a large pressure at about 145 psi, common on engineering datasheets. For torque, everyday fasteners are often specified in the tens of newton-metres — a car wheel nut is commonly around 110 Nm, or about 81 ft-lb. Knowing that 1 Nm is about 0.74 ft-lb, and that 1 bar is roughly 14.5 psi, lets you estimate quickly, while the converters above give exact figures for any value.
How do I convert MPa to psi?
Multiply MPa by 145.038 to get psi. For example, 0.5 MPa is about 72.5 psi. Enter your value in the pressure converter above to convert instantly.
How do I convert Nm to ft-lb?
Multiply newton-metres by 0.7376 to get foot-pounds. For example, 50 Nm is about 36.9 ft-lb. Use the torque converter above and select Nm and ft-lb.
What is 1 bar in psi?
One bar equals about 14.50 psi, and it’s also exactly 100 kPa. Bar is common for tyre and pressure-gauge readings.
Why are pressure and torque on the same page but separate?
They’re different physical quantities — pressure is force per area, torque is a turning force — so they can’t convert into each other. They’re grouped here for convenience because both use similar imperial-metric unit pairs, but each has its own converter.
How do I convert MPa to psi?
Multiply MPa by 145.04 to get psi. So 0.5 MPa is about 72.5 psi. Use the pressure converter above for any value.
How do I convert Nm to ft-lb?
Multiply newton-metres by 0.7376 to get foot-pounds. So 100 Nm is about 73.8 ft-lb. Use the torque converter for both directions.
What is 1 bar in psi?
One bar is about 14.5 psi, and also exactly 100 kPa. Bar is common on tyre and pressure-gauge readings.
Can I convert pressure into torque?
No — they measure different things. Pressure is force over an area; torque is a twisting force. They’re grouped here only because both need metric-imperial conversion.