📏 Feet to Millimeters Converter
Convert feet (ft) to millimeters (mm) instantly, with the formula, a worked example and a conversion table.
Quick answer: 1 foot (ft) = 304.8 millimeters (mm). Formula: mm = ft × 304.8.
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Feet to Millimeters Converter inputs
Result
Feet to Millimeters conversion table
| Feet (ft) | Millimeters (mm) |
|---|---|
| 0.1 ft | 30.48 mm |
| 0.5 ft | 152.4 mm |
| 1 ft | 304.8 mm |
| 2 ft | 609.6 mm |
| 3 ft | 914.4 mm |
| 5 ft | 1,524 mm |
| 10 ft | 3,048 mm |
| 20 ft | 6,096 mm |
| 25 ft | 7,620 mm |
| 50 ft | 15,240 mm |
| 100 ft | 30,480 mm |
| 1,000 ft | 304,800 mm |
Other length conversions
ft to mmft to cmft to mft to kmft to inft to ydft to mift to nmi
How to convert feet to millimeters
Multiply the number of feet by 304.8 to get millimeters: mm = ft × 304.8.
Example: 5 ft = 1,524 mm.
The foot (ft) and the millimeter (mm) are both units of length. Need the opposite direction? Use the mm to ft converter.
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Metric and imperial units
The metric system (SI) is used by almost every country and by science worldwide. Its units scale by powers of ten – 1 kilometer is 1,000 meters, 1 meter is 100 centimeters – which makes conversions inside the system easy. The imperial and US customary systems (inches, feet, pounds, gallons) are still used daily in the United States and partly in the UK.
Since 1959 the inch has been defined as exactly 2.54 centimeters and the pound as exactly 0.45359237 kilograms, so conversions between the two systems are exact. Note that a US gallon (3.785 L) and an imperial gallon (4.546 L) are different – choose the right one above.
This converter covers 10 categories and 66 units: length, weight, temperature, volume, area, speed, time, data, energy, pressure.
Frequently asked questions
How many millimeters are in a foot?
1 foot = 304.8 millimeters.
How do I convert feet to millimeters?
Use the formula mm = ft × 304.8. For example, 5 ft = 1,524 mm.
How do I convert millimeters back to feet?
1 millimeter = 0.0032808399 feet. Use the mm to ft converter linked on this page.
Are these conversions exact?
Yes – all factors use the internationally defined values (for example 1 inch = 2.54 cm exactly, 1 pound = 0.45359237 kg exactly). Results are rounded to 8 significant digits for display.