Volume Converter
Convert liters, gallons, cups, pints, milliliters and more.
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Liter (L)
Imperial Gallon (imp gal)
| Unit | 1 L equals |
|---|---|
| Milliliter (ml) | 1,000 |
| Liter (L) | 1 |
| Cubic Meter (m³) | 0.001 |
| Cubic Centimeter (cm³) | 1,000 |
| US Teaspoon (tsp) | 202.884 |
| US Tablespoon (tbsp) | 67.6279 |
| US Fluid Ounce (fl oz) | 33.8141 |
| US Cup (cup) | 4.16667 |
| US Pint (pt) | 2.11338 |
| US Quart (qt) | 1.05669 |
| US Gallon (gal) | 0.264172 |
| Imperial Gallon (imp gal) | 0.219969 |
How it works
- 1 US gallon = 3.78541 L
- 1 cup = 240 ml
- 1 L = 33.814 fl oz
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Frequently asked
How many liters in a US gallon?
1 US gallon = 3.78541 liters.
Is US gallon the same as Imperial gallon?
No — 1 imp gal ≈ 4.546 L, 1 US gal ≈ 3.785 L.
Where you'll actually use this
Volume measures three-dimensional capacity — how much liquid a container holds or how much space an object occupies. Metric uses liters and milliliters; imperial uses gallons, quarts, pints, cups, and fluid ounces.
- Cooking
US recipes use cups and tablespoons; metric recipes use ml. A US cup is 236.6 ml — not 250 ml as in metric cups.
- Fuel
Pump prices show gallons in the US, liters almost everywhere else.
- Beverages
A US fluid ounce (29.57 ml) is slightly smaller than a UK fluid ounce (28.41 ml).
Common mistakes to avoid
- US gallon ≠ UK gallon
A US gallon is 3.785 L, a UK (imperial) gallon is 4.546 L — about 20% larger.
- Cups aren't universal
US cup = 236.6 ml. UK cup = 284 ml. Metric cup = 250 ml. Match the recipe origin.
Did you know?
At 4 °C exactly one liter of pure water weighs one kilogram — the original metric definition.
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Accuracy & sources
How this tool is built and verified.
- Source
- Standards-aligned factors
- Last reviewed
- Q2 2026
- Status
- Verified
- International System of Units (SI)BIPM — Bureau International des Poids et Mesures · The International System of Units (SI Brochure), 9th edition
- ISO 80000 — Quantities and UnitsISO / IEC · ISO 80000-1:2022
- Standards aligned
- Formula verified
- Editor reviewed
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