Closing summary
The Pressure Converter converts gauge and absolute pressure units for tyres, plumbing, weather, and engineering. Pounds per square inch, bar, pascal, kilopascal, atmosphere, and millimetres of mercury share audited factors with arithmetic visible on each result.
Ideal gas and fluid statics solvers live on the physics pages. This tool only changes the unit label on a pressure value already known.
Convert between units of pressure
Select a value and unit pair. The Pressure Converter applies the ratio from the conversion table, respecting whether the input is treated as gauge or absolute when both modes are offered. Common pairs include psi to bar and kPa to psi for automotive and SI paperwork.
Pascal is the SI base unit. Larger values use kilopascal or megapascal; smaller leaks may use millibar. The interface keeps magnitude readable by suggesting a sensible target unit after conversion.
Convert psi to bar
One psi equals 6894.757293168 pascals, which is 0.068947572931683 bar exactly. Thirty-two psi, a typical passenger tyre cold pressure, converts as 32 × 0.06894757 ≈ 2.206 bar on many European pump labels. Divide bar by the same factor for the reverse.
Two bar equals 2 ÷ 0.06894757 ≈ 29.01 psi. The Pressure Converter prints multiply or divide under the result.
Convert pascals and kilopascals
One kilopascal equals 1000 pascals and 0.1450377377 psi. Building codes and weather maps often cite kPa; US equipment manuals cite psi. One hundred kPa is about 14.5037 psi, near one atmosphere of gauge reference in many contexts. Megapascal appears for high-pressure hydraulics.
The converter scales pascals with SI prefixes without rounding the definition of the pascal itself.
Use atmospheric pressure as a reference
Standard atmosphere is defined as 101325 pascals exactly, 101.325 kPa, 1.01325 bar, 14.695948775514 psi, and 760 mmHg at the conventional mercury density. Sea-level average weather pressure hovers near that standard, though local weather varies day to day. Absolute pressure equals gauge pressure plus ambient atmospheric pressure when a gauge reads zero at sea level in open air.
The Pressure Converter notes which mode applies when converting tyre or tank readings.
Convert bar and millimetres of mercury
One bar equals 100000 pascals exactly in the SI-derived sense used on European gauges. Standard atmosphere is 1.01325 bar. Blood pressure cuffs and weather altimetry still cite mmHg; 760 mmHg at standard conditions matches 101325 Pa when conventional mercury density applies.
The Pressure Converter lists mmHg and inHg for legacy dials while keeping pascals as the SI anchor underneath every ratio.
Work a tyre pressure example
A passenger tyre labeled 32 psi converts to about 220.6 kPa and 2.206 bar for a European pump dial. The substitution reads 32 × 6894.757 Pa = 220632 Pa, then divide by 1000 for kPa. The Pressure Converter prints each step so garage gauges in mixed units can be checked before a long trip.
FAQ
How do I convert psi to bar?
Multiply psi by 0.068947572931683 to get bar. Thirty-two psi is about 2.206 bar. The Pressure Converter shows the factor and product.
How many pascals are in 1 psi?
One psi equals 6894.757293168 pascals exactly. Divide pascals by that number to get psi.
What is 1 atm in psi?
One standard atmosphere equals 14.695948775514 psi and 101325 pascals. Weather and vacuum specs sometimes reference atm instead of bar.
Is tyre pressure gauge or absolute?
Tyre gauges read gauge pressure, zero referenced to ambient air, not absolute zero pressure. Add roughly one atmosphere only when converting to absolute pascal for thermodynamics homework.
How do I convert kPa to psi?
Multiply kPa by 0.1450377377 to get psi, or divide psi by that factor for kPa. One hundred kPa is about 14.5037 psi.
Where do I solve ideal gas law pressure?
Use the physics Ideal Gas Law Calculator when temperature, moles, and volume determine pressure. The Pressure Converter only converts units on a known pressure value.
How do I convert bar to psi?
Multiply bar by 14.503773773022421 to get psi. Two bar is about 29.01 psi. The Pressure Converter prints the factor used.
What is 32 psi in kPa?
Thirty-two psi times 6894.757293168 Pa per psi divided by 1000 gives about 220.6 kPa. Select psi and kPa in the unit picker for the exact product.
How many bar is one atmosphere?
One standard atmosphere equals 1.01325 bar and 14.695948775514 psi. The Pressure Converter treats atm as the 101325 Pa definition.
The Pressure Converter returns the converted value with the factor and working shown, so every result can be checked by hand against the audited conversion table.