EVERYDAY · ENGINEERING · SCIENCE

Unit conversion. Made clear.

Start with a familiar unit, type a value, and get a dependable answer with sensible precision. Fractions and scientific notation are welcome.

520units ready to convert
EVERYDAY

Length

Distance, height, thickness and astronomical length.

ls
au

Try a decimal, 1e-9, 1/3, or 5 1/2.

Resultls → auConvert light-second to astronomical unit
HOW IT IS CALCULATED

Convert through metre

Enter a light-second value to calculate astronomical unit with full internal precision before display rounding.

Display precisionAuto · 12 significant digits

Auto keeps up to 12 significant digits, trims unnecessary zeroes, and switches to scientific notation for extreme magnitudes.

QUICK REFERENCE

All units in this quantity

UnitSymbolConverted value
quectometrefrom lsqmInteractive
rontometrefrom lsrmInteractive
yoctometrefrom lsymInteractive
zeptometrefrom lszmInteractive
attometrefrom lsamInteractive
femtometrefrom lsfmInteractive
picometrefrom lspmInteractive
nanometrefrom lsnmInteractive
ångströmfrom lsÅInteractive
micrometrefrom lsµmInteractive
millimetrefrom lsmmInteractive
centimetrefrom lscmInteractive
decimetrefrom lsdmInteractive
metrefrom lsmInteractive
decametrefrom lsdamInteractive
hectometrefrom lshmInteractive
kilometrefrom lskmInteractive
megametrefrom lsMmInteractive
gigametrefrom lsGmInteractive
terametrefrom lsTmInteractive
petametrefrom lsPmInteractive
exametrefrom lsEmInteractive
zettametrefrom lsZmInteractive
yottametrefrom lsYmInteractive
ronnametrefrom lsRmInteractive
quettametrefrom lsQmInteractive
thou / milfrom lsmilInteractive
inchfrom lsinInteractive
footfrom lsftInteractive
yardfrom lsydInteractive
chainfrom lschInteractive
furlongfrom lsfurInteractive
international milefrom lsmiInteractive
nautical milefrom lsnmiInteractive
U.S. survey footfrom lsftUSInteractive
typographic pointfrom lsptInteractive
astronomical unitfrom lsauInteractive
light-secondfrom lslsInteractive
light-yearfrom lslyInteractive
parsecfrom lspcInteractive

SI symbols follow international notation. U.S. and Imperial measures are labelled separately where their values differ.