A pressure converter changes one pressure number into another unit. This pressure converter uses the pascal as the base. One pascal is the base unit. One kilopascal is exactly 1000 pascals. One bar is exactly 100000 pascals. One standard atmosphere is exactly 101325 pascals. Pounds per square inch are not a round power of ten. The psi factor on this page is the international avoirdupois pound, 0.45359237 kg, times standard gravity, 9.80665 m/s², divided by the square of the international inch, 0.0254 m. That product is the exact factor used for every psi conversion here. A rounded “about 6895” figure is not the source of truth.
Bar and the standard atmosphere are close and often mixed up. One bar is 100000 pascals. One standard atmosphere is 101325 pascals. They are not the same unit, and this page will not treat them as interchangeable. If a gauge face says bar, choose bar. If a table says atm, choose standard atmosphere.
The page converts the number you type. Zero is allowed. A negative number is allowed, and the sign is kept. The tool does not add one atmosphere, remove one atmosphere, or decide whether the reading is gauge pressure or absolute pressure. Those labels belong on the instrument, not in a silent adjustment. Torr, millimetres of mercury, and inches of water are not offered. Adding them would turn a five-unit conversion into a catalogue.
Weight Converter also mentions a pound. That pound is a mass. The pound inside psi is the same international pound, but it is used here only to define a force per area. Do not send a kilogram from a mass conversion into this page and expect a pressure.
Empty input fails. Text that is not a number fails. A magnitude above 1e15 is refused so the result cannot become an unusable overflow. Enter on the field or either list runs the conversion. The result line shows the converted number and the destination unit name.
32 psi to bar is 2.206322333814 bar. The same 32 psi is 2.177470845116 standard atmospheres. Both results use the pound, gravity, and inch constants above, then the shared display rule: at most 12 digits after the decimal, with trailing zeros removed. 100000 pascals is 1 bar. 101325 pascals is 1 standard atmosphere. 1 bar to bar stays 1. A negative input keeps the minus sign, so −32 psi to bar is −2.206322333814 bar.
32 psi = 2.206322333814 bar
32 psi = 2.177470845116 atm
1 bar = 100000 Pa
1 atm = 101325 PaTire placards, pump dials, and hydraulic notes often print psi in one country and bar in another. The useful check is the unit printed next to the number, then this conversion. The page will not tell you a safe tire pressure. It will not look up a vehicle. It will not convert a force in newtons unless you already have a pressure. If the source says kPa, use kilopascal, which is exactly 1000 pascals, not a rough bar.
Display follows the other converters. A whole result such as 1 is shown as 1, not as a padded decimal. A long factor such as the 32 psi examples keeps the digits the 12-place rule produces. Very small differences between bar and atm matter when a specification names one of them. Choosing the wrong one is a larger error than the display rounding.
Scientific notation is accepted when it is a real finite number inside the magnitude limit. A blank field after Swap units is still empty and still an error. Keyboard users can reach Convert, Swap units, Example, and Clear, and can press Enter from the number field or either unit list.
Psi uses the international pound 0.45359237 kg, standard gravity 9.80665 m/s², and the inch 0.0254 m. Zero and negative numbers are converted as numbers. This page does not add or remove one atmosphere.
No. One bar is 100000 pascals. One standard atmosphere is 101325 pascals.
Psi uses the international pound 0.45359237 kg, standard gravity 9.80665, and the inch 0.0254 m.
Yes. The page converts the number and keeps the sign. It does not switch between gauge and absolute pressure.
No. The conversion stays in the browser. You type the number.