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Length
Distance, height, thickness and astronomical length.
Try a decimal, 1e-9, 1/3, or 5 1/2.
Result1e-12 mm1 fm = 1e-12 mm
EVERYDAY · ENGINEERING · SCIENCE
fm to mm Converter
Convert femtometre (fm) to millimetre (mm). Enter a value for an instant result, or use the examples and reverse conversion below.
520units ready to convert
HOW IT IS CALCULATED
Convert through metre
Enter a femtometre value to calculate millimetre with full internal precision before display rounding.
Display PrecisionAuto · 6 significant digits
Auto trims unnecessary zeroes and uses scientific notation for extreme magnitudes. Use Digits to set the display precision; calculations retain full precision.
QUICK REFERENCE
All units in this quantity
| Unit | Symbol | Converted value |
|---|---|---|
| quectometrefrom fm | qm | 1e15 |
| rontometrefrom fm | rm | 1000000000000 |
| yoctometrefrom fm | ym | 1000000000 |
| zeptometrefrom fm | zm | 1000000 |
| attometrefrom fm | am | 1000 |
| femtometrefrom fm | fm | 1 |
| picometrefrom fm | pm | 0.001 |
| nanometrefrom fm | nm | 0.000001 |
| ångströmfrom fm | Å | 0.00001 |
| micrometrefrom fm | µm | 0.000000001 |
| millimetrefrom fm | mm | 1e-12 |
| centimetrefrom fm | cm | 1e-13 |
| decimetrefrom fm | dm | 1e-14 |
| metrefrom fm | m | 1e-15 |
| decametrefrom fm | dam | 1e-16 |
| hectometrefrom fm | hm | 1e-17 |
| kilometrefrom fm | km | 1e-18 |
| megametrefrom fm | Mm | 1e-21 |
| gigametrefrom fm | Gm | 1e-24 |
| terametrefrom fm | Tm | 1e-27 |
| petametrefrom fm | Pm | 1e-30 |
| exametrefrom fm | Em | 1e-33 |
| zettametrefrom fm | Zm | 1e-36 |
| yottametrefrom fm | Ym | 1e-39 |
| ronnametrefrom fm | Rm | 1e-42 |
| quettametrefrom fm | Qm | 1e-45 |
| thou / milfrom fm | mil | 3.93701e-11 |
| inchfrom fm | in | 3.93701e-14 |
| footfrom fm | ft | 3.28084e-15 |
| yardfrom fm | yd | 1.09361e-15 |
| chainfrom fm | ch | 4.97097e-17 |
| furlongfrom fm | fur | 4.97097e-18 |
| international milefrom fm | mi | 6.21371e-19 |
| nautical milefrom fm | nmi | 5.39957e-19 |
| U.S. survey footfrom fm | ftUS | 3.28083e-15 |
| typographic pointfrom fm | pt | 2.83465e-12 |
| astronomical unitfrom fm | au | 6.68459e-27 |
| light-secondfrom fm | ls | 3.33564e-24 |
| light-yearfrom fm | ly | 1.057e-31 |
| parsecfrom fm | pc | 3.24078e-32 |
SI symbols follow international notation. U.S. and Imperial measures are labelled separately where their values differ.
fm to mm Conversion Reference
Femtometre (fm) and millimetre (mm) are units of length. Use this page to convert in either direction.
Conversion Examples
| Femtometre (fm) | Millimetre (mm) |
|---|---|
| 1 fm | 1e-12 mm |
| 5 fm | 5e-12 mm |
| 10 fm | 1e-11 mm |
| 100 fm | 1e-10 mm |
Examples are rounded to 6 significant digits. The interactive converter retains full calculation precision; change Display Precision to see more digits.
Reverse Conversion
mm to fm (millimetre to femtometre)
Related Length Conversions
fm to qm (femtometre to quectometre)fm to rm (femtometre to rontometre)fm to ym (femtometre to yoctometre)fm to zm (femtometre to zeptometre)fm to am (femtometre to attometre)fm to pm (femtometre to picometre)fm to nm (femtometre to nanometre)fm to Å (femtometre to ångström)fm to µm (femtometre to micrometre)fm to cm (femtometre to centimetre)fm to dm (femtometre to decimetre)fm to m (femtometre to metre)fm to dam (femtometre to decametre)fm to hm (femtometre to hectometre)fm to km (femtometre to kilometre)fm to Mm (femtometre to megametre)fm to Gm (femtometre to gigametre)fm to Tm (femtometre to terametre)fm to Pm (femtometre to petametre)fm to Em (femtometre to exametre)fm to Zm (femtometre to zettametre)fm to Ym (femtometre to yottametre)fm to Rm (femtometre to ronnametre)fm to Qm (femtometre to quettametre)fm to mil (femtometre to thou / mil)fm to in (femtometre to inch)fm to ft (femtometre to foot)fm to yd (femtometre to yard)fm to ch (femtometre to chain)fm to fur (femtometre to furlong)fm to mi (femtometre to international mile)fm to nmi (femtometre to nautical mile)fm to ftUS (femtometre to U.S. survey foot)fm to pt (femtometre to typographic point)fm to au (femtometre to astronomical unit)fm to ls (femtometre to light-second)fm to ly (femtometre to light-year)fm to pc (femtometre to parsec)