This online quiz is intended to give you extra practice in converting SI units.

Select your preferences below and click 'Start' to give it a try!

Number of problems:	5  10  25  50  100!
Quiz type:	One-step conversions (convert to & from base units, easier)  Two-step conversions (convert to & from units with prefixes, harder)  Both!
Prefix types:	Common prefixes only (k, d, c, m)  More prefixes (G, M, k, h, D, d, c, m, µ, n)
Units:	Common chemistry units only (g, m, L, J, Pa)  Common physics units only (g, m, s, Hz, N, J, W)  Lots of units (g, m, L, s, Hz, N, Pa, J, W, V, A, F, C, Ω)