Length
Distance, height, thickness and astronomical length.
Try a decimal, 1e-9, 1/3, or 5 1/2.
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Convert millimetre (mm) to light-second (ls). Enter a value for an instant result, or use the examples and reverse conversion below.
Distance, height, thickness and astronomical length.
Try a decimal, 1e-9, 1/3, or 5 1/2.
Enter a millimetre value to calculate light-second with full internal precision before display rounding.
Auto trims unnecessary zeroes and uses scientific notation for extreme magnitudes. Use Digits to set the display precision; calculations retain full precision.
| Unit | Symbol | Converted value |
|---|---|---|
| quectometrefrom mm | qm | 1e27 |
| rontometrefrom mm | rm | 1e24 |
| yoctometrefrom mm | ym | 1e21 |
| zeptometrefrom mm | zm | 1e18 |
| attometrefrom mm | am | 1e15 |
| femtometrefrom mm | fm | 1000000000000 |
| picometrefrom mm | pm | 1000000000 |
| nanometrefrom mm | nm | 1000000 |
| ångströmfrom mm | Å | 10000000 |
| micrometrefrom mm | µm | 1000 |
| millimetrefrom mm | mm | 1 |
| centimetrefrom mm | cm | 0.1 |
| decimetrefrom mm | dm | 0.01 |
| metrefrom mm | m | 0.001 |
| decametrefrom mm | dam | 0.0001 |
| hectometrefrom mm | hm | 0.00001 |
| kilometrefrom mm | km | 0.000001 |
| megametrefrom mm | Mm | 0.000000001 |
| gigametrefrom mm | Gm | 1e-12 |
| terametrefrom mm | Tm | 1e-15 |
| petametrefrom mm | Pm | 1e-18 |
| exametrefrom mm | Em | 1e-21 |
| zettametrefrom mm | Zm | 1e-24 |
| yottametrefrom mm | Ym | 1e-27 |
| ronnametrefrom mm | Rm | 1e-30 |
| quettametrefrom mm | Qm | 1e-33 |
| thou / milfrom mm | mil | 39.3701 |
| inchfrom mm | in | 0.0393701 |
| footfrom mm | ft | 0.00328084 |
| yardfrom mm | yd | 0.00109361 |
| chainfrom mm | ch | 0.0000497097 |
| furlongfrom mm | fur | 0.00000497097 |
| international milefrom mm | mi | 0.000000621371 |
| nautical milefrom mm | nmi | 0.000000539957 |
| U.S. survey footfrom mm | ftUS | 0.00328083 |
| typographic pointfrom mm | pt | 2.83465 |
| astronomical unitfrom mm | au | 6.68459e-15 |
| light-secondfrom mm | ls | 3.33564e-12 |
| light-yearfrom mm | ly | 1.057e-19 |
| parsecfrom mm | pc | 3.24078e-20 |
SI symbols follow international notation. U.S. and Imperial measures are labelled separately where their values differ.
Millimetre (mm) and light-second (ls) are units of length. Use this page to convert in either direction.
| Millimetre (mm) | Light-second (ls) |
|---|---|
| 1 mm | 3.33564e-12 ls |
| 5 mm | 1.66782e-11 ls |
| 10 mm | 3.33564e-11 ls |
| 100 mm | 3.33564e-10 ls |
Examples are rounded to 6 significant digits. The interactive converter retains full calculation precision; change Display Precision to see more digits.
ls to mm (light-second to millimetre)