Convert Feet to Millimeters
Convert Feet to Millimeters instantly. 1 Foot (ft) equals 304.8 Millimeters (mm).
Feet to Millimeters conversion table
| Feet (ft) | Millimeters (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 |
| 50 ft | 15,240 mm |
| 100 ft | 30,480 mm |
| 500 ft | 152,400 mm |
| 1,000 ft | 304,800 mm |
1 Foot = 304.8 Millimeters · multiply Feet by 304.8
About converting Feet to Millimeters
Feet (ft) and Millimeters (mm) are both units of length, so converting between them is a single multiplication: multiply your Feet figure by 304.8. Ten Feet comes to 3,048 Millimeters, and a hundred works out at 30,480 Millimeters.
Rule of thumb: going from Feet to Millimeters multiplies, so the figure always grows — one Foot is already 304.8 Millimeters. If your answer came out smaller, you have the conversion the wrong way round.
What is a Foot?
A foot is twelve inches, or exactly 0.3048 meters. The name is not a metaphor — it descends from body-based measurement, though a real foot is rather shorter than the unit. Despite the world largely going metric, the foot is stubbornly entrenched in two places worth knowing about: American building construction, where lumber and floor plans are dimensioned in feet and inches, and international aviation, where altitude is reported in feet almost everywhere on Earth regardless of what the country uses on the ground.
What is a Millimeter?
A millimeter is one thousandth of a meter, and it is where metric measurement starts getting genuinely precise. It is the working unit of engineering drawings, machine shops, rainfall figures and camera lenses — a "50 mm lens" and "12 mm of rain overnight" are both millimeter measurements. Technical drawings in most of the world default to millimeters precisely because it lets a draughtsman specify a whole component without ever writing a decimal point.
To put both in perspective: a typical room ceiling is about 8 feet high, while a credit card is about 0.76 millimeters thick.
The converter above updates as you type, and the table lists common values for quick reference. Need the opposite direction? Use the Millimeters to Feet converter, or browse all Length converters.
Frequently asked questions
How many Millimeters are in one Foot?
There are 304.8 Millimeters in one Foot.
How do I convert Feet to Millimeters?
Multiply the number of Feet by 304.8. For example, 10 Feet = 3,048 Millimeters.
What is 100 Feet in Millimeters?
100 Feet is equal to 30,480 Millimeters.
How do I convert Millimeters to Feet?
Multiply the Millimeters value by 0.003281 (or divide by 304.8).
Is this Feet to Millimeters conversion exact?
Yes, exactly. Both units are fixed against the same base by definition, and 1 Foot = 304.8 Millimeters is the complete value — nothing is rounded away.
What is a Foot?
A foot is twelve inches, or exactly 0.3048 meters. The name is not a metaphor — it descends from body-based measurement, though a real foot is rather shorter than the unit. Despite the world largely going metric, the foot is stubbornly entrenched in two places worth knowing about: American building construction, where lumber and floor plans are dimensioned in feet and inches, and international aviation, where altitude is reported in feet almost everywhere on Earth regardless of what the country uses on the ground.
What is a Millimeter?
A millimeter is one thousandth of a meter, and it is where metric measurement starts getting genuinely precise. It is the working unit of engineering drawings, machine shops, rainfall figures and camera lenses — a "50 mm lens" and "12 mm of rain overnight" are both millimeter measurements. Technical drawings in most of the world default to millimeters precisely because it lets a draughtsman specify a whole component without ever writing a decimal point.