Quick answer
Choose your units and enter a value. Handy facts: 1 US gallon = 3.785 L, 1 UK gallon = 4.546 L, 1 US cup = 236.6 ml and 1 tablespoon = 3 teaspoons ≈ 14.8 ml.
- 1 litre:
- 1,000 ml
- 1 US gallon:
- 3.78541 L
- 1 UK gallon:
- 4.54609 L
- 1 US cup:
- 236.59 ml
- 1 US tbsp:
- 14.79 ml
- 1 US fl oz:
- 29.57 ml
American recipes use cups and tablespoons, fuel is sold by the litre or gallon, and lab work uses millilitres and cubic metres. This volume converter covers them all — and keeps US and UK gallons clearly separate.
How to use Volume Converter – step by step
- 1 Enter the amountType the volume you have.
- 2 Choose unitsFor example cups → ml or gallons → litres.
- 3 Read the resultAll equivalents appear below.
Why use our Volume Converter?
Kitchen units
Cups, tablespoons, teaspoons and fluid ounces.
US and UK gallons
Avoid the common 20% mix-up.
Scientific units
Millilitres, litres, m³ and ft³.
Instant
No button to press.
Volume conversion charts
Cup (US) to Millilitre
| Cup (US) (cup) | Millilitre (ml) |
|---|---|
| 1 cup | 236.59 ml |
| 5 cup | 1,182.94 ml |
| 10 cup | 2,365.88 ml |
| 25 cup | 5,914.71 ml |
| 50 cup | 11,829.41 ml |
| 100 cup | 23,658.82 ml |
Gallon (US) to Litre
| Gallon (US) (gal_us) | Litre (l) |
|---|---|
| 1 gal_us | 3.7854 l |
| 5 gal_us | 18.9271 l |
| 10 gal_us | 37.8541 l |
| 25 gal_us | 94.6353 l |
| 50 gal_us | 189.27 l |
| 100 gal_us | 378.54 l |
Litre to Fluid ounce (US)
| Litre (l) | Fluid ounce (US) (floz) |
|---|---|
| 1 l | 33.814 floz |
| 5 l | 169.07 floz |
| 10 l | 338.14 floz |
| 25 l | 845.35 floz |
| 50 l | 1,690.7 floz |
| 100 l | 3,381.4 floz |
Cooking measurements
1 cup = 16 tablespoons = 48 teaspoons. When baking, weighing ingredients is more accurate than measuring volume, because a cup of flour can weigh very different amounts depending on how it is packed.
Frequently asked questions
How many ml are in a cup?
How many litres are in a gallon?
How many teaspoons are in a tablespoon?
Is a fluid ounce the same as a weight ounce?
Last updated November 2026 · Written and tested by the SmallEasyTools team.