15 psi to bar — 15 pounds per square inch in bar
Exact 15 ÷ 14.503774 = 1.034214
15 pounds per square inch in other units
| Pascals | 103,421.36 | Pa |
|---|---|---|
| Hectopascals | 1,034.21 | hPa |
| Kilopascals | 103.421359 | kPa |
| Megapascals | 0.10342136 | MPa |
| Millibars | 1,034.21 | mbar |
| Bar | 1.034214 | bar |
| Standard atmospheres | 1.020689 | atm |
| Torr | 775.723989 | Torr |
| Millimetres of mercury | 775.723878 | mmHg |
| Inches of mercury | 30.54031 | inHg |
psi to bar at a glance
| Pounds per square inch | Bar |
|---|---|
| 1 psi | 0.06894757 bar |
| 2 psi | 0.13789515 bar |
| 3 psi | 0.20684272 bar |
| 5 psi | 0.34473786 bar |
| 10 psi | 0.68947573 bar |
| 20 psi | 1.378951 bar |
| 25 psi | 1.723689 bar |
| 50 psi | 3.447379 bar |
| 100 psi | 6.894757 bar |
| 250 psi | 17.236893 bar |
| 500 psi | 34.473786 bar |
| 1,000 psi | 68.947573 bar |
How to convert pounds per square inch to bar
Multiply by 0.06894757 — one pound per square inch is 0.06894757 bar. That factor is exact: it comes from the definition of the units rather than from a measurement, so it will not change and does not need rounding.
Working 15 ÷ 14.503774 = 1.034214
In words: about one bar.
Questions
How many bar are in a pound per square inch?
One pound per square inch is 0.06894757 bar. This figure is exact — it comes from the definition of the unit, not a measurement.
What is 15 pounds per square inch in bar?
15 pounds per square inch is 1.034214 bar. The working is 15 ÷ 14.503774 = 1.034214.
What pressure should my tyres be?
Look at the sticker in the driver's door frame or the fuel flap, not the number moulded into the tyre — that one is the tyre's maximum, not the manufacturer's recommendation. Most cars sit somewhere around 32 to 35 psi, which is roughly 2.2 to 2.4 bar.
Is my tyre gauge measuring absolute or gauge pressure?
Gauge pressure — the amount above the surrounding air. A tyre reading 32 psi actually contains about 46.7 psi absolute, because atmospheric pressure of roughly 14.7 psi is already pressing on the other side of the gauge. Conversions on this page are between units, and leave that distinction alone.
Why do weather forecasts use hectopascals and millibars interchangeably?
Because they are the same size. One hectopascal is exactly one millibar, so the change from mbar to hPa was a relabelling rather than a conversion. Standard sea-level pressure is 1013.25 of either.
What is the difference between torr and mmHg?
Almost nothing, and the difference is deliberate. A torr is exactly one seven-hundred-and-sixtieth of a standard atmosphere; the conventional mmHg is defined as exactly 133.322387415 pascals. They diverge by about one part in seven million — invisible in medicine, occasionally not in vacuum work.