EVERYDAY
Length
Distance, height, thickness and astronomical length.
Try a decimal, 1e-9, 1/3, or 5 1/2.
Resultmm → inConvert millimetre to inch
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
HOW IT IS CALCULATED
Convert through metre
Enter a millimetre value to calculate inch 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
| Unit | Symbol | Converted value |
|---|---|---|
| quectometrefrom mm | qm | Interactive |
| rontometrefrom mm | rm | Interactive |
| yoctometrefrom mm | ym | Interactive |
| zeptometrefrom mm | zm | Interactive |
| attometrefrom mm | am | Interactive |
| femtometrefrom mm | fm | Interactive |
| picometrefrom mm | pm | Interactive |
| nanometrefrom mm | nm | Interactive |
| ångströmfrom mm | Å | Interactive |
| micrometrefrom mm | µm | Interactive |
| millimetrefrom mm | mm | Interactive |
| centimetrefrom mm | cm | Interactive |
| decimetrefrom mm | dm | Interactive |
| metrefrom mm | m | Interactive |
| decametrefrom mm | dam | Interactive |
| hectometrefrom mm | hm | Interactive |
| kilometrefrom mm | km | Interactive |
| megametrefrom mm | Mm | Interactive |
| gigametrefrom mm | Gm | Interactive |
| terametrefrom mm | Tm | Interactive |
| petametrefrom mm | Pm | Interactive |
| exametrefrom mm | Em | Interactive |
| zettametrefrom mm | Zm | Interactive |
| yottametrefrom mm | Ym | Interactive |
| ronnametrefrom mm | Rm | Interactive |
| quettametrefrom mm | Qm | Interactive |
| thou / milfrom mm | mil | Interactive |
| inchfrom mm | in | Interactive |
| footfrom mm | ft | Interactive |
| yardfrom mm | yd | Interactive |
| chainfrom mm | ch | Interactive |
| furlongfrom mm | fur | Interactive |
| international milefrom mm | mi | Interactive |
| nautical milefrom mm | nmi | Interactive |
| U.S. survey footfrom mm | ftUS | Interactive |
| typographic pointfrom mm | pt | Interactive |
| astronomical unitfrom mm | au | Interactive |
| light-secondfrom mm | ls | Interactive |
| light-yearfrom mm | ly | Interactive |
| parsecfrom mm | pc | Interactive |
SI symbols follow international notation. U.S. and Imperial measures are labelled separately where their values differ.