LankaTools

Feet & Inches ↔ Metric Converter

Convert feet and inches to metres, centimetres and millimetres, or convert metric lengths back to normalized feet and inches.

Convert heights, room dimensions and other lengths in either direction. Uses the international foot.

Decimal values are allowed. Extra inches are carried into feet.
Converted length

5 ft 7 in

Metres (m)
1.7018 m
Centimetres (cm)
170.18 cm
Millimetres (mm)
1,701.8 mm

Metric results use up to 6 decimal places, with scientific notation for very small nonzero values; feet + inches uses 4 decimal places for inches. Display rounding does not change the calculation.

How it works

Metres = (feet × 12 + inches) × 0.0254. One foot is exactly 0.3048 m; one inch is exactly 2.54 cm. For the reverse conversion, divide metres by 0.0254, then separate whole feet and remaining inches.

Unit definition: NIST

Your measurements are calculated in this browser.

Check the stated data sources and assumptions before relying on a result.

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