Pressure converter

Client

Enter one pressure with a unit—for example 100 kPa, 1 bar, or 14.7 psi—and see metric, barometric, and US customary columns side by side. All math runs locally in your browser.

Pressure

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mmHg and torr use the conventional column height from one standard atmosphere (101325 Pa ÷ 760). bar is exactly 100,000 Pa.

Load example: · ·

UnitValueCopy
Pa100000 Pa
kPa100 kPa
MPa0.1 MPa
bar1 bar
mbar1000 mbar
atm0.986923266716 atm
psi14.503773773 psi
mmHg750.061682704 mmHg
inHg29.529987508 inHg

Common use cases

  • Compare tire or hydraulic gauge readings quoted in psi with workshop manuals in bar or kPa.
  • Translate weather reports between inHg and millibars when you only have one instrument scale.
  • Cross-check vacuum or anesthesia notes that mix mmHg (torr) with kPa.

Common mistakes to avoid

  • Gauge vs absolute pressure

    This table converts the magnitude you type—it does not know whether your source is gauge (psig), absolute (psia), or vacuum relative to atmosphere. Keep the same reference frame when comparing numbers.

  • Ambient pressure is not always 1 atm

    Altitude and weather change local air pressure. Do not assume sea-level 101325 Pa when back-solving real-world gauge readings unless your source already normalized it.

FAQ

Are these values sent to Toolcore?

No. Conversions run in your browser from the text you enter.

Why does 760 mmHg equal 1 atm here?

mmHg and torr use the conventional definition tied to the standard atmosphere (101325 Pa), so 760 mmHg is exactly one atm in this column set.

Common search terms

Phrases people search for that match this tool. See the full long-tail keyword index.

  • psi to bar converter online
  • kpa to psi calculator in browser
  • atm to mmhg pressure conversion

More tools

Related utilities you can open in another tab—mostly client-side.