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Metric & imperial units Calculator

Convert length, area, volume and mass in either direction. This free metric & imperial units calculator shows the calculation and its assumptions so you can compare your own figures.

Calculated on your device

Your results

Converted Value32.8084 ft

Convert length, area, volume and mass in either direction.

Calculated outcomes

Input Value
10
Input Unit
m
Output Unit
ft

Assumptions and estimates

  • Exact definitions: 1 ft = 0.3048 m; 1 yd² = 0.83612736 m²; 1 Imperial gal = 4.54609 L; 1 US gal = 3.785411784 L; 1 lb = 0.45359237 kg.
  • Method: Uses fixed international unit definitions, with separate imperial and US gallons.
  • Area conversions square the linear scale. Negative values are retained for signed measurements.

Useful next steps

  1. Use Compare options to test an alternative side by side.
  2. Copy, print or download a record of this calculation when you need one.

Reports open your email app addressed to s@s1.ie with the public page address only. Your inputs are never added.

How the metric & imperial units calculation works

Uses fixed international unit definitions, with separate imperial and US gallons.

Area conversions square the linear scale. Negative values are retained for signed measurements.

Using this calculator

  1. Enter your own figures in the labelled inputs. Keep the currencies, units and time periods consistent.
  2. Choose any applicable rate profile, pattern or assumption shown for this tool. Open additional inputs when relevant.
  3. Review converted value, then read the stated assumptions and eligibility conditions before using the result.

Worked example

This is a static example using illustrative inputs, not facts about you or today’s date. The displayed eligibility selections and assumptions apply only to this example.

See example inputs
Value to convert
10
Conversion pair
Metres ↔ feet
Direction
Metric → imperial / US
Gallon definition
Imperial UK gallon
Converted Value
32.8084 ft

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