# kPa to PSI Converter

URL: https://speedycalculator.com/calculators/conversion/kpa-to-psi/
Last updated: 2026-10-25

> Convert kilopascals (kPa) to psi (psi): 1 kilopascal = 0.14503774 psi, so multiply by 0.14503774 or divide by 6.8947573. Both fields are editable, so you can also type in psi and get kilopascals back.

## Inputs

- Kilopascals (kPa)

## Results

- Psi

## Formula

```
1 kPa = 0.14503774 psi
1 psi = 6.8947573 kPa
psi = kPa × 0.14503774
```

## Explanation

Tyre placards in Canada, Australia and Europe list kPa. Divide by 6.895 for psi: 220 kPa is about 32 psi.

### How to use the kPa to PSI Converter

- Type the number of kilopascals into the **Kilopascals** field. Decimals such as 110 are fine.
- Read the answer in **Psi** – it updates as you type, with no button to press.
- To convert the other way, type into **Psi** and the kilopascals are recalculated.
- Press **Copy results** to copy both values with the page title, or **Copy link** to share this exact conversion.

This page converts only kPa ⇄ psi. Need a different unit? Use the general pressure converter, where you can choose any “from” and “to” unit.

### How it works

Both units measure pressure, so they are always in the same ratio: one kilopascal equals 0.14503774 psi. The calculator multiplies the number of kilopascals you type by 0.14503774 to give psi, and when you type into the psi field it divides by the same factor to give kilopascals. Because the ratio never changes, doubling the kilopascals always doubles the psi. Results are calculated at full precision and rounded only for display (up to eight decimal places, with very large or small values shown in scientific notation).

### How to convert kilopascals to psi

- Write down the value in kilopascals, for example **220 kPa**.
- Multiply by the conversion factor 0.14503774 (because 1 kilopascal = 0.14503774 psi).
- 220 × 0.14503774 = **31.908302 psi**.
- To go back from psi to kilopascals, divide by 0.14503774 – or multiply by 6.8947573.

### kPa to psi conversion table

KilopascalsPsiPsiKilopascals100 kPa14.503774 psi1 psi6.8947573 kPa150 kPa21.755661 psi2 psi13.789515 kPa180 kPa26.106793 psi5 psi34.473786 kPa200 kPa29.007548 psi10 psi68.947573 kPa220 kPa31.908302 psi20 psi137.89515 kPa240 kPa34.809057 psi50 psi344.73786 kPa250 kPa36.259434 psi100 psi689.47573 kPa300 kPa43.511321 psi1,000 psi6,894.7573 kPa400 kPa58.015095 psi500 kPa72.518869 psi1,000 kPa145.03774 psi

### What is a kilopascal?

A kilopascal is 1,000 Pa. Tyre pressures in Canada and Australia, weather data and boiler gauges often use kPa; standard air pressure is 101.325 kPa.

### What is a pound per square inch?

Pounds per square inch is the pressure of one pound-force on one square inch, about 6,895 Pa. U.S. tyre gauges, compressors and hydraulic equipment read psi.

### Quick mental conversion

For a fast estimate, multiply kilopascals by about **0.15** to get psi; the error is about 3.4%. Use the calculator above when you need the exact figure.

### Common mistakes to avoid

Mixing gauge pressure (psig, barg) with absolute pressure (psia, bara), treating bar and atm as identical, and confusing kgf/cm² with bar.

## Worked example

Inputs — Kilopascals: 220 kPa.

Results — **Psi = 31.9083023 psi**.

## FAQ

**How many psi is 220 kPa?**
About 31.9 psi.

**How many kPa is 30 psi?**
About 206.8 kPa.

**How do I convert kilopascals to psi?**
Multiply the number of kilopascals by 0.14503774. For example, 220 kPa × 0.14503774 = 31.908302 psi.

**How do I convert psi back to kilopascals?**
Divide by 0.14503774 (or multiply by 6.8947573), or simply type the value into the psi field above.

**What is 100 kPa in psi?**
100 kPa = 14.503774 psi.

**What is 1,000 kPa in psi?**
1,000 kPa = 145.03774 psi.

**Is this conversion exact?**
Yes. The factor comes from the official definitions of both units (NIST and the SI), so the only difference you may see is rounding in the last displayed digit.

**Can I convert to other units on this page?**
This page converts only between kilopascals and psi. To pick any pressure unit, use the general pressure converter linked under Related calculators.

**What formula does the kPa to PSI Converter use?**
1 kPa = 0.14503774 psi.


## Sources

- [NIST Special Publication 811 – Guide for the Use of the International System of Units](https://www.nist.gov/pml/special-publication-811)
- [NIST Handbook 44 Appendix C – General tables of units of measurement](https://www.nist.gov/pml/owm/nist-handbook-44-current-edition)