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Metric / Imperial Converter

Length, weight, temperature, area and volume in one tool.

Inputs

Results

Converted value

3.2808 ft

1.0000 m equals 3.2808 ft

Reverse conversion1 ft = 0.304800 m
Rounded (2 dp)3.28 ft

1.000 m = 3.2808 ft

How this is calculated

Every unit is stored as a factor relative to a single SI base unit for its measurement type — metres for length, kilograms for weight, square metres for area and cubic metres for volume. Converting is a two-step multiplication.

result = value × factor(from) ÷ factor(to)

Temperature is handled separately because the scales have different zero points, so a simple ratio does not work. Celsius is the pivot scale:

°C = (°F − 32) × 5/9   |   °F = °C × 9/5 + 32   |   K = °C + 273.15

The factors used here are the internationally agreed exact definitions: 1 inch is exactly 25.4 mm, 1 pound is exactly 0.45359237 kg, and 1 US gallon is exactly 231 cubic inches. Results are shown to four decimal places so that small dimensions such as fastener sizes stay readable, and a rounded two-decimal figure is provided for shop drawings and cut lists.

Frequently asked questions