# Psi to Kilopascals (psi to kPa)

> Convert psi to kilopascals: 1 psi = 6.89476 kPa. Exact conversion factor, formula, 22-row table and worked examples, with JSON API and MCP access.

- Page id: `psi-to-kpa` · Quantity: Pressure (`pressure`, base unit Pa) · Tool: `convert_units`
- Canonical page: https://tttkmbb.com/conversion/psi-to-kpa · This document: https://tttkmbb.com/conversion/psi-to-kpa.md · JSON: https://tttkmbb.com/conversion/psi-to-kpa.json (add `?value=` for a result)

## Formula

- `1 psi = 6.89476 kPa`
- `kilopascals = psi × 6.894757293`
- Reverse: `psi = kilopascals × 0.1450377377`

The factor follows from the SI definitions of both units (NIST SP 811); values below are rounded to 6 significant figures, the API returns up to 12.

## Worked examples

- 5 psi = 34.4738 kPa
- 12.5 psi = 86.1845 kPa
- 100 psi = 689.476 kPa

## Conversion table

| Psi (psi) | Kilopascals (kPa) |
| --- | --- |
| 1 | 6.89476 |
| 2 | 13.7895 |
| 3 | 20.6843 |
| 4 | 27.579 |
| 5 | 34.4738 |
| 6 | 41.3685 |
| 7 | 48.2633 |
| 8 | 55.1581 |
| 9 | 62.0528 |
| 10 | 68.9476 |
| 15 | 103.421 |
| 20 | 137.895 |
| 25 | 172.369 |
| 30 | 206.843 |
| 40 | 275.79 |
| 50 | 344.738 |
| 75 | 517.107 |
| 100 | 689.476 |
| 200 | 1378.95 |
| 250 | 1723.69 |
| 500 | 3447.38 |
| 1000 | 6894.76 |

## API

- `GET https://tttkmbb.com/api/v1/convert?value=5&from_unit=psi&to_unit=kPa` → unified JSON envelope with `result.values.result`, `formula`, `factor`, `sources`, `freshness`
- MCP: server `https://tttkmbb.com/mcp`, tool `convert_units` with `{"value":5,"from_unit":"psi","to_unit":"kPa"}`
- All pressure units: https://tttkmbb.com/api/v1/units?quantity=pressure · full converter: [Pressure Converter](https://tttkmbb.com/conversion/pressure.md)
- Authentication: none. Freshness: `static` (fixed conversion factors).

## FAQ

**How many kilopascals are in one psi?**

1 psi = 6.89476 kPa. The factor comes from the SI definitions of both units (NIST SP 811 / BIPM), so it is exact or correct to at least 10 significant figures.

**What is the formula to convert psi to kilopascals?**

Multiply the value in psi by 6.894757293: kilopascals = psi × 6.894757293. For example, 5 psi = 34.4738 kPa.

**How do I convert kilopascals back to psi?**

Multiply by the inverse factor 0.1450377377 (psi = kilopascals × 0.1450377377), or use the kilopascals-to-psi page.

## Related conversions

- [Kilopascals to psi](https://tttkmbb.com/conversion/kpa-to-psi.md) (reverse)
- [Psi to Bar](https://tttkmbb.com/conversion/psi-to-bar.md)
- [Bar to Psi](https://tttkmbb.com/conversion/bar-to-psi.md)
- [Bar to Kilopascals](https://tttkmbb.com/conversion/bar-to-kpa.md)
- [Kilopascals to Bar](https://tttkmbb.com/conversion/kpa-to-bar.md)
- [Atmospheres to Pascals](https://tttkmbb.com/conversion/atm-to-pa.md)
- [Pascals to Atmospheres](https://tttkmbb.com/conversion/pa-to-atm.md)
- [Atmospheres to Psi](https://tttkmbb.com/conversion/atm-to-psi.md)
- [Psi to Atmospheres](https://tttkmbb.com/conversion/psi-to-atm.md)

## Data Sources

- NIST Special Publication 811 – Guide for the Use of the International System of Units (SI), Appendix B conversion factors — https://www.nist.gov/pml/special-publication-811 (standard, retrieved 2026-09-24)
- BIPM – The International System of Units (SI Brochure, 9th edition) — https://www.bipm.org/en/publications/si-brochure (standard, retrieved 2026-09-24)
- Wikipedia – Conversion of units — https://en.wikipedia.org/wiki/Conversion_of_units (reference, retrieved 2026-09-24)