Volume Converter
Same value in every unit
| Unit | Value |
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What this converter does
Enter a number, pick the two units and the answer appears as you type. The table underneath shows the same value in litres, gallons, cups and millilitres and every other unit on the list, so you do not have to convert twice to compare. Nothing is sent anywhere — the arithmetic runs in your browser.
Conversion factors used
- 1 US gallon = 3.785411784 litres
- 1 imperial gallon (UK) = 4.54609 litres
- 1 US cup = 236.588 ml
- 1 US tablespoon = 14.787 ml
Tips
- Use Swap to reverse the direction without retyping the number.
- Very large and very small results switch to scientific notation so they stay readable.
- The result box is read-only — use Copy result to take the number.
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Frequently Asked Questions
Yes. Every factor is the exact defined value — an inch is 0.0254 metres and a pound is 0.45359237 kilograms by definition, not a rounded approximation. Results are only rounded when they are displayed.
No. The conversion is plain arithmetic done by JavaScript inside your browser, so the numbers you type never leave your device and the tool keeps working offline once loaded.
That is scientific notation, used when a result is very large or very small. Writing it in full would run to dozens of zeros and be harder to read, not easier.
Yes — the table below the result shows your value in every supported unit at the same time, which is quicker than running the conversion once for each unit.