Engineering Unit Converter

Nameplates, catalogues and reports mix unit systems. Enter a value and every equivalent in the chosen category is listed at once.

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These tools are intended for preliminary assessment and training. Decisions on critical equipment should be based on on-site measurement and expert evaluation.

How to use

Choose a category.
Enter the value and its unit.
All equivalents in the table update instantly; the input unit is highlighted.

Theory & formulas

Values are converted to the SI base unit and then to the target: y = x · k_from / k_to.

Temperature is an offset scale, not a proportional one: K = °C + 273.15, °F = °C·9/5 + 32.

Constants used: 1 in = 25.4 mm, 1 lbf = 4.448 N, 1 psi = 6894.76 Pa, 1 hp = 745.7 W, 1 PS = 735.5 W, 1 US gal = 3.785 L.

Frequently asked questions

Are hp and PS the same?

No. Mechanical horsepower (hp) is 745.7 W, metric horsepower (PS, CV) is 735.5 W. European motor nameplates usually use kW or PS.