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PSI to Bar
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PSI to Bar — quick reference

1 psi = 0.0689 bar
Common PSI to Bar conversions
psi bar
1 psi 0.0689 bar
2 psi 0.1379 bar
3 psi 0.2068 bar
5 psi 0.3447 bar
10 psi 0.6895 bar
20 psi 1.379 bar
25 psi 1.7237 bar
50 psi 3.4474 bar
100 psi 6.8948 bar
250 psi 17.2369 bar
500 psi 34.4738 bar
1000 psi 68.9476 bar
// about this tool

PSI to Bar Online

Updated 2026-10-24

Convert PSI to bar online for free. Enter a pressure in PSI and SnapTools shows the exact value in bar instantly, in your browser; nothing is uploaded.

Tire pressure is the classic case: US and UK gauges read PSI, while most of continental Europe and a lot of workshop equipment reads bar, so a 32 PSI spec means nothing on a bar gauge until it's converted. This tool uses the exact 0.0689475729 factor, not a rounded approximation. For the full family of pressure units (pascals, atmospheres, mmHg), use the Pressure Converter.

// how to use

  1. 1 Type or paste a pressure in PSI into the input.
  2. 2 SnapTools converts it to bar as you type.
  3. 3 Copy the result, or use the slider for a quick scrub across common tire/gauge ranges.

// examples

A car tire
Input
32
Output
2.2063 bar
A truck/RV tire
Input
80
Output
5.5158 bar

// common uses

Converting a US/UK tire-pressure spec (PSI) to a bar-reading gauge Reading a US pressure gauge against a metric equipment manual Comparing a PSI rating on imported equipment to bar Checking a manual pressure conversion

// faq

Why was the bar defined so close to one atmosphere?
That is deliberate, not a coincidence. British meteorologist William Napier Shaw introduced the bar in 1909 (from the Greek baros, "weight") specifically so it would sit close to normal atmospheric pressure — 1 standard atmosphere is defined as exactly 1.01325 bar, making the unit intuitive for weather and pressure work. It was internationally adopted in 1929.
Why would I need this for tire pressure?
US and UK tire gauges read in PSI; most of continental Europe and many workshop compressors read in bar. This converter lets you match the number on your gauge to the spec on your tire or in your manual.
What's the exact conversion factor?
1 PSI is exactly 0.0689475729 bar. This tool uses the full-precision figure, not a rounded 0.069.
Is bar the same as "atmospheres"?
Close but not identical. 1 bar is about 0.987 atmospheres. The full Pressure Converter offers atmospheres and mmHg (torr) as separate units if you need those exactly.
What about converting bar back to PSI?
Use Bar to PSI, or the full Pressure Converter for pascals, atmospheres, and mmHg.

// works with your data

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Use this via API

Get a free API key → 
curl -X POST https://thesnaptools.com/api/v1/tools/psi-to-bar \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"value":"32"}'