MM to Feet Converter — Millimeters to Feet and Inches
Convert millimeters to feet — decimal feet and the feet-and-inches breakdown — plus quick reference values in inches, centimeters and meters. Uses the exact definition: 1 ft = 304.8 mm.
mm
1 ft 0 in
- 1
Whole feet
⌊304.8 ÷ 304.8⌋ = 1 - 2
Remaining inches
(1 − 1) × 12 = 0 - 3
Decimal feet
304.8 ÷ 304.8 = 11 ft = 304.8 mm exactly (international definition).
How does this calculator work?
Divide mm by 304.8 to get feet: feet = mm ÷ 304.8. The foot is defined as exactly 304.8 mm, making the conversion exact. For feet-and-inches, multiply the decimal remainder by 12. 1 ft = 304.8 mm = 30.48 cm = 12 in.
Formula
How this is calculated
The foot is defined as exactly 0.3048 meters (304.8 mm) under the international yard and pound agreement of 1959. This definition is exact and permanent, so dividing any millimeter value by 304.8 gives the precise decimal foot equivalent with no approximation error in the conversion factor itself.
For practical use — height measurements, architectural drawings, or building specifications — results are often expressed in the combined feet-and-inches format. Take the fractional part of the decimal feet value and multiply by 12 to get the remaining inches. For example: 500 mm ÷ 304.8 = 1.6404 ft → 1 ft and 0.6404 × 12 = 7.685 in, which would typically be written as 1 ft 7¹¹⁄₁₆ in on a blueprint.
The calculator also shows the equivalent in inches (mm ÷ 25.4), centimeters (mm ÷ 10), and meters (mm ÷ 1000) so you can cross-reference all three common measurement systems in one step. All four conversion factors are exact under their respective international definitions.
Frequently asked questions
1 foot = exactly 304.8 mm (by the international yard and pound agreement of 1959, which fixed 1 in = 25.4 mm and 1 ft = 12 in). Dividing any mm value by 304.8 gives feet exactly.
Divide mm by 304.8 to get decimal feet. Then multiply the fractional part by 12 to get remaining inches. Example: 750 mm / 304.8 = 2.4606 ft → 2 ft + 0.4606 × 12 = 5.53 in = 2 ft 5½ in.
Yes. 1 foot is defined as exactly 304.8 mm, so the conversion factor is exact. The only rounding is in displaying the result to a finite number of decimal places.
Also known as
TG we-Calculate Editorial Team. (2026). MM to Feet Converter — Millimeters to Feet and Inches [Online calculator]. TG we-Calculate. https://we-calculate.com/calculator/mm-to-foot-converter
TG we-Calculate Editorial Team. "MM to Feet Converter — Millimeters to Feet and Inches." TG we-Calculate. 2026. https://we-calculate.com/calculator/mm-to-foot-converter.
TG we-Calculate Editorial Team, "MM to Feet Converter — Millimeters to Feet and Inches," TG we-Calculate, 2026. [Online]. Available: https://we-calculate.com/calculator/mm-to-foot-converter
@misc{wecalculate_mm_to_foot_converter, title = {MM to Feet Converter — Millimeters to Feet and Inches}, author = {{TG we-Calculate Editorial Team}}, howpublished = {\url{https://we-calculate.com/calculator/mm-to-foot-converter}}, year = {2026}, note = {TG we-Calculate} }
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