Volume Converter
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Understanding Volume Units
Metric Volume Units
Milliliter (mL)
One thousandth of a liter. Common for small liquid measurements, medicines, and food ingredients.
Liter (L)
Standard metric unit for liquids. A liter of water weighs approximately 1 kilogram.
Cubic Centimeter (cm³)
Equal to 1 milliliter. Often used in medical and scientific contexts. Written as cc in medical settings.
Cubic Meter (m³)
Equal to 1,000 liters. Used for large volumes like swimming pools, tanks, and construction materials.
US Customary Units
Teaspoon (tsp)
About 4.93 mL. Smallest common cooking measurement. 3 teaspoons = 1 tablespoon.
Tablespoon (tbsp)
About 14.79 mL. Common cooking measurement. 2 tablespoons = 1 fluid ounce.
Cup (US)
About 236.6 mL. Standard cooking measurement. 8 fluid ounces = 1 cup.
Gallon (US)
About 3.785 liters. Used for fuel, milk, and large liquid quantities. 4 quarts = 1 gallon.
US vs Imperial Gallons
Important Difference
US and Imperial (UK) gallons are different! A US gallon is 3.785 liters, while an Imperial gallon is 4.546 liters. This also affects pints, quarts, and fluid ounces. Always check which system is being used.
Cooking Measurement Reference
| US Measure | Metric | Notes |
|---|---|---|
| 1 teaspoon | 5 mL | Rounded for cooking |
| 1 tablespoon | 15 mL | 3 teaspoons |
| 1/4 cup | 60 mL | 4 tablespoons |
| 1/2 cup | 120 mL | 8 tablespoons |
| 1 cup | 240 mL | 16 tablespoons |
| 1 pint | 480 mL | 2 cups |
Conversion Formulas
gallons (US) = liters × 0.2642
liters = gallons (US) × 3.785
fluid oz = mL × 0.0338
mL = fluid oz × 29.57
Frequently Asked Questions
How do I convert liters to gallons?
Multiply liters by 0.2642 to get US gallons. For example, 10 liters × 0.2642 = 2.64 US gallons. To convert gallons to liters, multiply by 3.785. Note: UK (Imperial) gallons are different—1 Imperial gallon = 4.546 liters.
What's the difference between US and Imperial gallons?
A US gallon equals 3.785 liters (128 US fluid ounces), while an Imperial (UK) gallon equals 4.546 liters (160 Imperial fluid ounces). This 20% difference also affects pints, quarts, and fluid ounces. Always verify which system a recipe or measurement uses.
How many milliliters are in a cup?
A US cup equals approximately 237 mL (often rounded to 240 mL for cooking). A metric cup (used in Australia, Canada, and UK recipes) is exactly 250 mL. When following recipes, check whether US or metric cups are intended.
How do I convert fluid ounces to milliliters?
Multiply US fluid ounces by 29.57 to get milliliters. For example, 8 fl oz × 29.57 = 236.6 mL. For a quick estimate, multiply by 30. To convert mL to fl oz, divide by 29.57 (or multiply by 0.0338).