Height Converter
Convert height between feet & inches and metric centimetres or metres — exact, instant, and print-ready for forms, medical records, and building plans.
Feet & Inches → Centimetres / Metres
180.34 cm
1.803 m
Centimetres → Feet & Inches
5
10.87
5 ft 11 in = 180.34 cm (1.803 m)
How It Works
Formula: total inches = feet × 12 + inches; centimetres = total inches × 2.54; metres = centimetres ÷ 100.
Reverse: total inches = centimetres ÷ 2.54; feet = floor(total inches ÷ 12); inches = remainder.
Note: The factor 1 inch = 2.54 cm is exact by international definition (NIST SP 330). 5′9″ is 69 inches, not 5.9 feet — enter feet and inches separately for correct results.
Frequently Asked Questions
How many cm is 5 feet 11 inches?
5 feet 11 inches = (5 × 12 + 11) × 2.54 = 71 × 2.54 = 180.34 cm. UnitFig computes this exactly using 1 inch = 2.54 cm.
Is the inch-to-cm factor exact?
Yes. Since 1959 the international inch is defined as exactly 2.54 centimetres (referenced by NIST SP 330). The conversion has no rounding error other than the decimals you choose to display.
Why convert feet and inches together?
American heights are spoken as “5 foot 9”, not as a single number. A dedicated feet-and-inches input converts the whole height at once, avoiding the common mistake of treating “5’9”” as 5.9 feet.
Can I print or save the result as PDF?
Yes. Use the “Print / Save as PDF” button — it prints only your input height and the converted result, formatted for A4.
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Last Updated 2026 | Factor 1 inch = 2.54 cm verified against NIST SP 330