15 pounds per square inch to bar
1.034 bar
15 psi = 1.034 bar.
bar
1.034bar
15 psi = 1.034 bar
In short
How many bar is 15 pounds per square inch?
15 psi = 1.034 bar. 1 pounds per square inch = 0.068948 bar, so the working is 15 × 0.068948 = 1.034.
The working
The factor below is an exact definition rather than a measurement, so nothing is approximated in the arithmetic. The only rounding on this page happens where a number is displayed.
1 pounds per square inch = 0.068948 bar 15 × 0.068948 = 1.034
How much precision do you need?
Each row is the same answer cut at a different number of decimals, with what that choice costs you. Pick the shortest row whose error is smaller than whatever you are measuring with.
| Rounded to | Answer (bar) | Off by |
|---|---|---|
| Whole number | 1 | −0.03421 |
| 1 decimal | 1.0 | −0.03421 |
| 2 decimals | 1.03 | −0.00421 |
Round trip: take 1.034 bar back the other way and you land on 14.9969 psi — a drift of 0.0031 psi. That gap is the rounding, not the conversion.
What 15 psi looks like
14.70 psi
One standard atmosphere, 101,325 pascals exactly. A tyre gauge reads zero here, because it measures pressure above the surrounding air.
Frequently asked questions
What is 15 pounds per square inch in bar?
15 pounds per square inch is 1.034 bar. 1 pounds per square inch = 0.068948 bar, so the working is 15 × 0.068948 = 1.034.
How accurate is 1.034 bar?
Rounding to 1.034 bar and converting straight back gives 14.9969 psi, a drift of 0.0031 psi from the 15 you started with. The factor itself is exact; every bit of that difference comes from the rounding, not the conversion.
Nearby values
Any value at all
PSI to Bar Converter
Convert psi to bar — US tyre placards read against a European gauge.
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