SettingsSettings for this calculationUS
The pressure value to convert.
Useful for comparing a US-labeled gauge (PSI) against a metric spec sheet (kPa or bar).
The unit your starting value is in.
The result shows the equivalent in the other unit.
Converted pressure
206.8 kPa
They open the calculator with your figures already in it
Pressure Conversion Calculator (PSI ↔ kPa): 207 kPa — shown in imperial, US market. The link sets both, so the result they see is the one on your screen.
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How this was calculated
Formula source(s)
- 1 PSI = 6.89476 kPa (exact conversion factor)
Inputs used
- Pressure
- 30
- Converting From
- PSI
What this calculation does not cover
- The conversion changes the unit, not the reference datum. Almost every dial on a compressor, pressure tank or tyre reads gauge pressure, so 30 PSI converts to 206.84 kPa gauge, which is about 308 kPa absolute once the 101.325 kPa of atmosphere at sea level is added. A spec sheet quoting kPa(a), bar(a) or psia is describing a different quantity, and this page will not shift a reading between the two scales.
- Only PSI and kilopascals are offered, so a figure quoted in any other pressure unit has to be brought into one of those two first. One bar is 100 kPa and one MPa is 1000 kPa, both exact; a gas appliance figure in inches of water gauge is a far smaller unit, at roughly 249 Pa or 0.036 PSI per inch, and reading such a figure as PSI overstates it by a factor of about 28.
- Pressure is not head, and no fluid property enters this arithmetic at all. The same factor is applied whether the reading came from air, water or hydraulic oil, whereas converting pressure to a height of liquid depends on density, so one PSI is about 2.31 feet of water column only for water at ordinary temperatures. Use the PSI to feet of head calculator rather than reading this result as a lift.
- A converted figure says nothing about whether the pipe, hose, fitting or vessel is rated for it. Pressure ratings are also derated as temperature rises, sharply so for plastic pipe, and this page has no material or temperature input, so a result inside a component's cold rating can still exceed what that component may carry hot.
Add the equipment this sizes
This result is a specification — 206.8 kPa — not a quantity. Put the thing it sizes into your project: how many, what you call it, and your supplier’s price.
Computed in your browser — nothing you enter is uploaded. Presented in US customary units and US trade terminology. Where a formula follows a published standard, that standard and its edition are cited beside it on this page; where none governs, the page says so. Local amendments override model codes — verify against the code in force where you build.
Sources checked 2026-09-02 · in the site-wide review of 2026-09-06 · v1.0.1
Regulatory standards & verification citations1
- 1 PSI = 6.89476 kPa (exact conversion factor)
Cite this page
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