20 mm to ft — 20 millimetres in feet
Exact 20 ÷ 304.8 = 0.0656168
20 millimetres in other units
| Nanometres | 20,000,000 | nm |
|---|---|---|
| Micrometres | 20,000 | µm |
| Centimetres | 2 | cm |
| Metres | 0.02 | m |
| Kilometres | 0.00002 | km |
| Inches | 0.78740157 | in |
| Feet | 0.0656168 | ft |
| Yards | 0.02187227 | yd |
| Miles | 0.000012427424 | mi |
| Nautical miles | 0.000010799136 | nmi |
mm to ft at a glance
| Millimetres | Feet |
|---|---|
| 1 mm | 0.003280839895 ft |
| 2 mm | 0.00656167979 ft |
| 3 mm | 0.009842519685 ft |
| 5 mm | 0.0164042 ft |
| 10 mm | 0.0328084 ft |
| 20 mm | 0.0656168 ft |
| 25 mm | 0.082021 ft |
| 50 mm | 0.16404199 ft |
| 100 mm | 0.32808399 ft |
| 250 mm | 0.82020997 ft |
| 500 mm | 1.64042 ft |
| 1,000 mm | 3.28084 ft |
How to convert millimetres to feet
Multiply by 0.003280839895 — one millimetre is 0.003280839895 feet. That factor is exact: it comes from the definition of the units rather than from a measurement, so it will not change and does not need rounding.
Working 20 ÷ 304.8 = 0.0656168
What these units are
The millimetre and the foot are covered in the length unit guide, along with every other unit on this page.
Questions
How many feet are in a millimetre?
One millimetre is 0.003280839895 feet. This figure is exact — it comes from the definition of the unit, not a measurement.
What is 20 millimetres in feet?
20 millimetres is 0.0656168 feet. The working is 20 ÷ 304.8 = 0.0656168.
Is an inch exactly 2.54 centimetres?
Yes, exactly. Since 1959 the international inch has been defined as 25.4 millimetres, so the figure is a definition rather than a measurement. Every foot, yard and mile figure on this page follows from it and is equally exact.
Why is a nautical mile different from a mile?
It is tied to the Earth rather than to a body part. One nautical mile is one minute of latitude, fixed at exactly 1,852 metres, which makes chart work straightforward for anyone navigating by degrees.
How do I write my height in metric?
Convert the whole thing to inches first, then multiply by 2.54. Five foot ten is 70 inches, which is 177.8 cm. Converting the feet and the inches separately is where the arithmetic usually goes wrong.
Meter or metre?
Both name the same unit. "Metre" is the international spelling used by the SI and most English-speaking countries; "meter" is standard in the United States. Either spelling will find this page.