Length
Distance, height, thickness and astronomical length.
Try a decimal, 1e-9, 1/3, or 5 1/2.
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Convert metre (m) to femtometre (fm). 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 metre value to calculate femtometre 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 m | qm | 1e30 |
| rontometrefrom m | rm | 1e27 |
| yoctometrefrom m | ym | 1e24 |
| zeptometrefrom m | zm | 1e21 |
| attometrefrom m | am | 1e18 |
| femtometrefrom m | fm | 1000000000000000 |
| picometrefrom m | pm | 1000000000000 |
| nanometrefrom m | nm | 1000000000 |
| ångströmfrom m | Å | 10000000000 |
| micrometrefrom m | µm | 1000000 |
| millimetrefrom m | mm | 1000 |
| centimetrefrom m | cm | 100 |
| decimetrefrom m | dm | 10 |
| metrefrom m | m | 1 |
| decametrefrom m | dam | 0.1 |
| hectometrefrom m | hm | 0.01 |
| kilometrefrom m | km | 0.001 |
| megametrefrom m | Mm | 0.000001 |
| gigametrefrom m | Gm | 0.000000001 |
| terametrefrom m | Tm | 1e-12 |
| petametrefrom m | Pm | 1e-15 |
| exametrefrom m | Em | 1e-18 |
| zettametrefrom m | Zm | 1e-21 |
| yottametrefrom m | Ym | 1e-24 |
| ronnametrefrom m | Rm | 1e-27 |
| quettametrefrom m | Qm | 1e-30 |
| thou / milfrom m | mil | 39370.1 |
| inchfrom m | in | 39.3701 |
| footfrom m | ft | 3.28084 |
| yardfrom m | yd | 1.09361 |
| chainfrom m | ch | 0.0497097 |
| furlongfrom m | fur | 0.00497097 |
| international milefrom m | mi | 0.000621371 |
| nautical milefrom m | nmi | 0.000539957 |
| U.S. survey footfrom m | ftUS | 3.28083 |
| typographic pointfrom m | pt | 2834.65 |
| astronomical unitfrom m | au | 6.68459e-12 |
| light-secondfrom m | ls | 0.00000000333564 |
| light-yearfrom m | ly | 1.057e-16 |
| parsecfrom m | pc | 3.24078e-17 |
SI symbols follow international notation. U.S. and Imperial measures are labelled separately where their values differ.
Metre (m) and femtometre (fm) are units of length. Use this page to convert in either direction.
| Metre (m) | Femtometre (fm) |
|---|---|
| 1 m | 1000000000000000 fm |
| 5 m | 5e15 fm |
| 10 m | 1e16 fm |
| 100 m | 1e17 fm |
Examples are rounded to 6 significant digits. The interactive converter retains full calculation precision; change Display Precision to see more digits.