Femtometre
Contents
Key Stage 4
Meaning
Femtometres (fm) are a unit of distance, displacement and wavelength 1,000,000,000,000,000 times smaller than the SI Unit; the Metre.
About Femtometres
- Femtometres are shortened to fm with a lower case f and a lower case m.
- Pico means one quadrillionth so there are 1,000,000,000,000,000 femtometres in a Metre.
Converting to Picometres
| Unit | To convert | Femtometres |
| 1 megametre (1Mm) | Convert to femtometres x1021 | 1x1021fm |
| 1 kilometre (1km) | Convert to femtometres x1018 | 1x1018fm |
| 1 Metre (1m) | Convert to femtometres x1015 | 1x1015fm |
| 1 decimetre 1(dm) | Convert to femtometres x1014 | 1x1014fm |
| 1 centimetre 1(mm) | Convert to femtometres x1013 | 1x1013fm |
| 1 millimetre 1(mm) | Convert to femtometres x1012 | 1x1012fm |
| 1 micrometre 1(µm) | Convert to femtometres x109 | 1x109fm |
| 1 nanometre 1(nm) | Convert to femtometres x106 | 1x106fm |
| 1 picometre 1(pm) | Convert to femtometres x103 | 1x103fm |
| 1 femtometre 1(fm) | Convert to femtometres x1 | 1fm |