18 pounds per square inch to bar
1.241 bar
18 psi = 1.241 bar.
bar
1.241bar
18 psi = 1.241 bar
In short
How many bar is 18 pounds per square inch?
18 psi = 1.241 bar. 1 pounds per square inch = 0.068948 bar, so the working is 18 × 0.068948 = 1.241.
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 18 × 0.068948 = 1.241
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 | −0.24106 |
| 1 decimal | 1.2 | −0.04106 |
| 2 decimals | 1.24 | −0.00106 |
Round trip: take 1.241 bar back the other way and you land on 17.9992 psi — a drift of 0.0008 psi. That gap is the rounding, not the conversion.
Frequently asked questions
What is 18 pounds per square inch in bar?
18 pounds per square inch is 1.241 bar. 1 pounds per square inch = 0.068948 bar, so the working is 18 × 0.068948 = 1.241.
How accurate is 1.241 bar?
Rounding to 1.241 bar and converting straight back gives 17.9992 psi, a drift of 0.0008 psi from the 18 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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