Feet to cm Converter
Convert feet to centimeters for height measurement and international sizing.
How It Works
Formula: ft to cm = value × 30.48
Example: 5 ft = 152.4 cm
Note: 1 foot equals 30.48 centimeters under the international foot standard (1 ft = 0.3048 m).
Common Uses
Quick Conversion Table
| ft | cm |
|---|---|
| 1 | 30.48 |
| 5 | 152.4 |
| 10 | 304.8 |
| 50 | 1524 |
| 100 | 3048 |
| 500 | 15240 |
| 1000 | 30480 |
Rounding Rule
Rounded to 2 decimal places
Error Margin
±0.01 cm
Precision Guidance
For height, round to 1 decimal place. For BMI, keep 2 decimals.
Common Mistakes
Convert feet and inches separately, then add. 5 feet 9 inches is not 5.9 feet.
Frequently Asked Questions
What is 1 foot in cm?
1 foot equals 30.48 centimeters using the international foot standard.
How do I convert feet to cm?
Multiply the foot value by 30.48. For example, 5 ft × 30.48 = 152.4 cm.
How tall is 5 feet 9 inches in cm?
5'9'' equals 175.26 cm (5 ft × 30.48 = 152.4 cm, 9 in × 2.54 = 22.86 cm).
Is this the international foot?
Yes, this uses the international foot (0.3048 m), the standard for all general measurements.
Deep Dive Guide
Feet to cm: US Height and Measurement Conversion
Convert feet to cm with the exact 30.48 factor. See how US height, furniture, and room dimensions translate into metric for forms and travel.
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Exact Constants & Authoritative Sources
Every conversion on this page uses the fixed, internationally agreed constants below — drawn from NIST and the SI Brochure. No values are estimated or rounded as if exact. See the full list on our Sources & Standards page.
- EXACT1 inch (in) = 25.4 millimetres (exact)
- EXACT1 foot (ft) = 0.3048 metres (exact, 12 in)
- EXACT1 yard (yd) = 0.9144 metres (exact, 3 ft)
- EXACT1 mile (mi) = 1609.344 metres (exact, 5280 ft)
- EXACT1 centimetre (cm) = 0.01 metre (definition)
Common Pitfalls & How to Avoid Them
US survey foot is deprecated
The old US survey foot (0.304800609601 m) was retired in 2023 in favor of the international foot (0.3048 m). Modern conversions use the international foot; mixing them drifts over long distances.
Inches vs. centimetres for screens
Display and wheel sizes are often rounded to the nearest convenient number; a "27-inch" monitor is nominal, not a precise 68.58 cm panel.
A unit-conversion reference site has no manufacturer-specific or device calibration parameters, so "layered tuning" does not apply here. The only real error-handling is input validation: the converter rejects non-numeric, empty, or out-of-range entries and shows a clear message, then falls back to exact constants above. No estimated or rounded figures are ever presented as exact.
Authoritative sources for this page
- NIST (U.S. National Institute of Standards and Technology) — NIST SP 330 — The International System of Units (SI), 2019 edition
- BIPM (International Bureau of Weights and Measures) — SI Brochure — The International System of Units (9th edition)
Last Updated 2026 | This converter was reviewed for accuracy