Convert water pressure between bar, psi, kPa, and metres/feet of water head.
How to Use the Water Pressure Calculator
Enter the "Pressure Value" you want to convert.
Select the "Unit" that your pressure value is currently measured in.
Click "Calculate" to see the equivalent pressure in bar, psi, kPa, and metres/feet of head.
Frequently Asked Questions
Pressure and head are directly related through fluid density: 1 bar of pressure corresponds to approximately 10.2 metres (33.5 feet) of water head — that's how high a column of water would need to be to create that pressure at its base.
It converts between bar, psi (pounds per square inch), kPa (kilopascals), and metres/feet of water head — the most common units used in plumbing and pump specifications.
Water pressure affects fixture performance, pipe sizing, and whether you need a booster pump. Most household plumbing operates well between 1-3.5 bar (15-50 psi).
Yes, it's completely free and requires no sign-up.