Volume Converter
Convert any volume unit to any other — cubic feet, cubic yards, cubic metres, litres, US gallons and UK gallons.
Volume units are where US and UK measures diverge most — especially gallons. This converter handles all six units, including both gallons, with exact constants.
Pick the units, enter the value, and the conversion follows.
Your results
Enter your measurements and press Calculate.
Quantities are rounded up to whole tiles, planks, boxes or bags, after the wastage allowance. Cost appears only when you enter a price.
Formula
All lengths are converted to a single unit before the calculation: 1 ft = 0.3048 m, 1 in = 25.4 mm, 1 ft² = 0.09290304 m², 1 yd² = 9 ft². Material quantities are rounded up — you cannot buy part of a tile, plank or bag.
How to use this calculator
- Enter the volume value.
- Choose the unit it is in, and the unit to convert to.
- Read the converted volume (and its cubic-metre value).
- Use the Copy results button to copy the answer.
Worked example
| Value | 1 yd³ |
|---|---|
| To cubic feet | 1 × 27 = 27 ft³ |
| 1 m³ to cubic feet | 1 ÷ 0.028316846592 = 35.3147 ft³ |
| 1 UK gallon to US gallons | 4.54609 ÷ 3.785411784 = 1.2009 US gal |
Check it by hand: every step above uses the formula in the box. If your numbers match the example inputs but the calculator gives a different answer, please report it via the contact page.
Frequently asked questions
How many cubic feet are in a cubic yard?
27 ft³. A cubic yard is 3 ft × 3 ft × 3 ft. This converter uses the exact factor.
What is the difference between a US gallon and a UK gallon?
A US gallon is 3.785411784 litres; a UK (imperial) gallon is 4.54609 litres — about 20% bigger. 1 UK gallon = 1.2009 US gallons. Always check which gallon a figure uses.
How many litres are in a cubic metre?
Exactly 1,000 litres. A cubic metre is 1,000 litres, 35.3147 ft³ and 1.30795 yd³.
Which volume unit should I use?
Cubic yards for bulk materials in the US, cubic metres in the UK and Australia, litres for liquids, gallons for tanks and fuel. This converter moves between all six.
Related calculators
Estimates only. Results are for planning. Measure twice, confirm box coverage and tile sizes on the packaging you buy, and follow the manufacturer's instructions. See the disclaimer.