CSV
Spreadsheet-friendly conversion factors.
Download CSV →Download reference conversion factors for classroom, engineering, developer, and research use. Each row converts a unit to a stable base unit so you can build reliable calculators, worksheets, and tools.
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JSON
Developer-friendly factors for apps and widgets.
Download JSON →Embeddable widget
Use the calculator widget with attribution.
View widget →Included categories
| Category | Base unit | Example conversions |
|---|---|---|
| Length | meter | mm, cm, m, in, ft, yd, mi |
| Pressure | pascal | Pa, kPa, MPa, bar, psi, atm, Torr |
| Force | newton | N, kgf, lbf |
| Power | watt | W, kW, hp |
| Energy | joule | J, kWh, GJ, BTU |
| Volume | liter | mL, L, m³, cup, fl oz, gal |
| Radiation | sievert / becquerel | Sv, rem, Bq, Ci |
| Electric current | ampere | A, mA, µA |
Featured reference pages
AllUnitConversions, Unit Conversion Tables, https://allunitconversions.com/unit-conversion-tables
Dataset license: CC BY 4.0 — free to reuse with attribution and a link to All Unit Conversions.