Volume Conversions
Convert volume and capacity units — liters, gallons, cups, milliliters, and more. Free calculators for cooking, chemistry, and fuel measurement.
7 units · 7 conversions
Volume measures three-dimensional space — how much liquid a container holds or how much space a solid occupies. Metric uses liters and milliliters; US customary uses gallons, quarts, cups, and fluid ounces.
US gallons and imperial (UK) gallons differ: one US gallon is about 3.785 liters while one imperial gallon is about 4.546 liters. Our converters label units clearly so you apply the right factor for your region.
Popular volume conversions
Real-world example
A European recipe lists 500 ml of stock but you only have a measuring cup marked in US cups. Converting 500 ml gives about 2.1 cups — enough to scale the recipe accurately.
All volume conversions
Volume units explained
- Milliliters (ml)
- Also: milliliters, mL
- Liters (L) · base unit
- Also: liters, l
- Gallons (US) (gal)
- Also: gallons
- Quarts (US) (qt)
- Also: quarts
- Pints (US) (pt)
- Also: pints
- Cups (US) (cup)
- Also: cups
- Fluid Ounces (US) (fl oz)
- Also: fluid ounces, fl. oz.
Frequently asked questions
- How many milliliters are in a cup?
- One US customary cup equals 236.588 ml. Metric cups (250 ml) are used in some countries — check which standard your recipe uses.
- Is a US gallon the same as a UK gallon?
- No. A US gallon is smaller (≈ 3.785 L) than an imperial gallon (≈ 4.546 L). Always confirm which gallon type you need.