Convert Millimetre to Metre
1 millimetre = 0.001 metre (m). For example, 10 millimetre = 0.01 metre and 100 millimetre = 0.1 metre. Type any value below to convert millimetre to metre both ways — it runs entirely in your browser.
Quick answer: Millimetre to Metre
1 Millimetre = 0.001 Metre (mm → m). To convert millimetre to metre, multiply by 0.001. To convert metre to millimetre, multiply by 1,000. The converter at the top does this instantly and both ways; the sections below give the formula, worked examples, a full conversion chart and answers to the most common millimetre-to-metre questions.
How to convert Millimetre to Metre
To convert millimetre to metre, multiply the number of millimetre by the conversion factor 0.001, because 1 mm = 0.001 m. The conversion is linear, so the same factor works for any value — whole numbers, decimals or fractions. For the reverse direction, 1 m = 1,000 mm, so you divide by 0.001 (or multiply by 1,000) to turn metre back into millimetre.
m = mm × 0.001 ·
mm = m × 1,000
- Write down the value you want to convert, in millimetre.
- Multiply it by 0.001.
- The result is the same area/length/quantity expressed in metre.
Millimetre to Metre — worked examples
Each row shows the exact arithmetic so you can follow the conversion step by step. For example, 5 millimetre is 0.005 metre because 5 mm × 0.001 = 0.005 m.
| Millimetre | Calculation | Metre |
|---|---|---|
| 1 mm | 1 mm × 0.001 = 0.001 m | 0.001 m |
| 2 mm | 2 mm × 0.001 = 0.002 m | 0.002 m |
| 3 mm | 3 mm × 0.001 = 0.003 m | 0.003 m |
| 5 mm | 5 mm × 0.001 = 0.005 m | 0.005 m |
| 7 mm | 7 mm × 0.001 = 0.007 m | 0.007 m |
| 10 mm | 10 mm × 0.001 = 0.01 m | 0.01 m |
| 12 mm | 12 mm × 0.001 = 0.012 m | 0.012 m |
| 15 mm | 15 mm × 0.001 = 0.015 m | 0.015 m |
| 20 mm | 20 mm × 0.001 = 0.02 m | 0.02 m |
| 25 mm | 25 mm × 0.001 = 0.025 m | 0.025 m |
| 50 mm | 50 mm × 0.001 = 0.05 m | 0.05 m |
| 100 mm | 100 mm × 0.001 = 0.1 m | 0.1 m |
Common Millimetre to Metre conversions
These are the millimetre-to-metre values people look up most often. Every figure is computed from the exact factor, so you can rely on them for quick reference:
- 1 millimetre = 0.001 metre
- 2 millimetre = 0.002 metre
- 2.5 millimetre = 0.0025 metre
- 3 millimetre = 0.003 metre
- 4 millimetre = 0.004 metre
- 5 millimetre = 0.005 metre
- 6 millimetre = 0.006 metre
- 7 millimetre = 0.007 metre
- 8 millimetre = 0.008 metre
- 9 millimetre = 0.009 metre
- 10 millimetre = 0.01 metre
- 12 millimetre = 0.012 metre
- 15 millimetre = 0.015 metre
- 20 millimetre = 0.02 metre
- 25 millimetre = 0.025 metre
- 30 millimetre = 0.03 metre
- 50 millimetre = 0.05 metre
- 75 millimetre = 0.075 metre
- 100 millimetre = 0.1 metre
- 200 millimetre = 0.2 metre
- 500 millimetre = 0.5 metre
- 1000 millimetre = 1 metre
Millimetre to Metre conversion chart (both directions)
The chart below converts millimetre to metre and metre to millimetre side by side, so it works whichever way you need. 1 millimetre = 0.001 metre, and 1 metre = 1,000 millimetre.
| Millimetre → Metre | Metre → Millimetre |
|---|---|
| 0.25 mm = 0.00025 m | 0.25 m = 250 mm |
| 0.5 mm = 0.0005 m | 0.5 m = 500 mm |
| 1 mm = 0.001 m | 1 m = 1,000 mm |
| 2 mm = 0.002 m | 2 m = 2,000 mm |
| 3 mm = 0.003 m | 3 m = 3,000 mm |
| 4 mm = 0.004 m | 4 m = 4,000 mm |
| 5 mm = 0.005 m | 5 m = 5,000 mm |
| 6 mm = 0.006 m | 6 m = 6,000 mm |
| 7 mm = 0.007 m | 7 m = 7,000 mm |
| 8 mm = 0.008 m | 8 m = 8,000 mm |
| 9 mm = 0.009 m | 9 m = 9,000 mm |
| 10 mm = 0.01 m | 10 m = 10,000 mm |
| 12 mm = 0.012 m | 12 m = 12,000 mm |
| 15 mm = 0.015 m | 15 m = 15,000 mm |
| 20 mm = 0.02 m | 20 m = 20,000 mm |
| 25 mm = 0.025 m | 25 m = 25,000 mm |
| 30 mm = 0.03 m | 30 m = 30,000 mm |
| 40 mm = 0.04 m | 40 m = 40,000 mm |
| 50 mm = 0.05 m | 50 m = 50,000 mm |
| 75 mm = 0.075 m | 75 m = 75,000 mm |
| 100 mm = 0.1 m | 100 m = 100,000 mm |
| 150 mm = 0.15 m | 150 m = 150,000 mm |
| 200 mm = 0.2 m | 200 m = 200,000 mm |
| 250 mm = 0.25 m | 250 m = 250,000 mm |
| 500 mm = 0.5 m | 500 m = 500,000 mm |
| 1000 mm = 1 m | 1000 m = 1,000,000 mm |
Millimetre vs Metre: which is bigger?
A metre is the larger unit: one metre equals 1,000 millimetres. Put another way, you need 1,000 millimetres to make a single metre.
What is a Millimetre? History, origin and usage
The millimetre is one-thousandth of a metre, taking its prefix from the Latin mille, 'thousand'. Like the other metric submultiples it dates to the French metric reform of the 1790s.
The millimetre is the workhorse of engineering drawings, machining and manufacturing, where tolerances are specified in millimetres or fractions of them. It is also the standard unit for rainfall and snowfall depth in meteorology.
Rainfall reported in 'millimetres' is the depth water would reach on a flat surface, so one millimetre of rain equals one litre per square metre. The smallest markings on most metric rulers are millimetres.
What is a Metre? History, origin and usage
The metre was conceived during the French Revolution: in 1791 the French Academy of Sciences defined it as one ten-millionth of the distance from the North Pole to the Equator along the meridian through Paris. Its name comes from the Greek metron, 'a measure'. It was later embodied in a platinum bar (1799), and in 1960 redefined using the wavelength of krypton-86 light.
The metre is the SI base unit of length and the foundation of the entire metric system used by science and most of the world. Every other unit in this category is defined as a multiple or fraction of it.
Since 1983 the metre has been defined by fixing the speed of light: it is the distance light travels in a vacuum in 1/299,792,458 of a second. This means the metre is no longer tied to any physical artefact and can be reproduced anywhere in the universe.
Convert 1 Millimetre to other units
It can help to see a millimetre next to the other units it is commonly compared with. One millimetre (mm) is equal to:
| 1 Millimetre equals | Unit |
|---|---|
| 0.000001 km | Kilometre |
| 0.001 m | Metre |
| 0.01 dm | Decimetre |
| 0.1 cm | Centimetre |
| 1,000 µm | Micrometre |
| 6.2137e-7 mi | Mile |
| 0.001093613 yd | Yard |
| 0.00328084 ft | Foot |
| 0.03937008 in | Inch |
| 5.3996e-7 nmi | Nautical Mile |
| 0.00000497097 fur | Furlong |
| 0.0000497097 ch | Chain |
| 0.00497097 li | Link |
| 0.0001988388 rd | Rod |
| 0.0001988388 pole | Pole |
| 0.0005468066 ftm | Fathom |
| 0.00984252 hand | Hand |
| 0.004374453 span | Span |
| 0.008748906 finger | Finger |
| 0.002187227 cubit | Cubit |
| 0.000164042 rope | Rope |
| 0.00055 ken | Ken |
| 2.0712e-7 lea | League |
| 2.834646 pt | Point |
| 6.6846e-15 AU | Astronomical Unit |
| 1.057e-19 ly | Light-year |
| 0.0001 dam | Decametre |
| 0.00001 hm | Hectometre |
| 1.7999e-7 nl | Nautical League |
Convert 1 Metre to other units
One metre (m) is equal to:
| 1 Metre equals | Unit |
|---|---|
| 0.001 km | Kilometre |
| 10 dm | Decimetre |
| 100 cm | Centimetre |
| 1,000 mm | Millimetre |
| 1,000,000 µm | Micrometre |
| 0.0006213712 mi | Mile |
| 1.093613 yd | Yard |
| 3.28084 ft | Foot |
| 39.37008 in | Inch |
| 0.0005399568 nmi | Nautical Mile |
| 0.00497097 fur | Furlong |
| 0.0497097 ch | Chain |
| 4.97097 li | Link |
| 0.1988388 rd | Rod |
| 0.1988388 pole | Pole |
| 0.5468066 ftm | Fathom |
| 9.84252 hand | Hand |
| 4.374453 span | Span |
| 8.748906 finger | Finger |
| 2.187227 cubit | Cubit |
| 0.164042 rope | Rope |
| 0.55 ken | Ken |
| 0.0002071237 lea | League |
| 2,834.646 pt | Point |
| 6.6846e-12 AU | Astronomical Unit |
| 1.057e-16 ly | Light-year |
| 0.1 dam | Decametre |
| 0.01 hm | Hectometre |
| 0.0001799856 nl | Nautical League |
Tips for converting Millimetre to Metre
- To go from millimetre to metre, multiply by 0.001; to go back, divide by 0.001 (or multiply by 1,000).
- For a quick mental estimate, remember that 1 millimetre ≈ 0.001 metre, so 10 millimetre ≈ 0.01 metre.
- The converter above keeps full precision; the tables round for readability, so use the tool for exact figures.
- Both fields update live as you type — change either side to convert in that direction.
How to use this Millimetre to Metre converter
Type a number into the Millimetre field and the equivalent in Metre appears instantly — there is no “convert” button to press and nothing is sent to a server, so it works offline once the page has loaded and is safe for any data. You can also type into the Metre field to convert the other way (metre to millimetre). Use the swap control to flip the two units, and copy the result with a single click. Because the calculation runs in your browser with full floating-point precision, the converter is more exact than the rounded figures shown in the reference chart above — use the chart for quick look-ups and the tool for precise work.
Accuracy and method
Every figure on this page — the formula, the worked examples, the conversion chart and the “convert to other units” tables — is computed from a single verified conversion factor (1 mm = 0.001 m), never copied from a hand-typed lookup table that could drift. That factor is derived from each unit’s definition in terms of a common base unit, and an automated check re-verifies all of the site’s factors on every update, so the numbers here stay correct over time. This matters for millimetre-to-metre conversions because a small rounding error in a published table compounds quickly at larger quantities; computing from the exact factor avoids that.
The metric units (km, m, cm, mm, µm) are exact by definition, and the imperial units (mile, yard, foot, inch, nautical mile) use their exact international values. Traditional units (hand, span, finger, cubit, rod/pole, link, rope, ken, league) are given at their commonly accepted standard sizes — historical local values sometimes differed, so confirm against a primary source before relying on them for legal or historical work.
Frequently asked questions
- How many metre are in 1 millimetre?
- 1 millimetre = 0.001 metre (m). To convert any number of millimetre to metre, multiply by 0.001.
- How do I convert millimetre to metre?
- Multiply the number of millimetre by 0.001. For example, 10 millimetre = 10 × 0.001 = 0.01 metre, and 25 millimetre = 0.025 metre.
- How many millimetre are in 1 metre?
- 1 metre = 1,000 millimetre. So to convert metre back to millimetre, multiply by 1,000.
- What is the formula to convert millimetre to metre?
- metre = millimetre × 0.001. The reverse formula is millimetre = metre × 1,000.
- How much is 100 millimetre in metre?
- 100 millimetre = 0.1 metre. (And 1000 millimetre = 1 metre.)
- Which is bigger, a millimetre or a metre?
- A metre is larger: 1 metre = 1,000 millimetre.
- Is this millimetre to metre converter accurate?
- Yes — every value is computed from the exact 0.001 m per mm factor (not rounded look-up tables), and the factors are re-verified automatically on every update.
- Can I convert metre to millimetre too?
- Yes. The converter works both ways — enter a value in either field. 1 metre = 1,000 millimetre.