Volume Converter

This converter handles volume across metric units (milliliters through cubic meters) and US customary cooking and liquid measures (teaspoons through gallons), converting through liters as the common base unit.

Cooking conversions are some of the most frequently needed volume conversions: 1 US cup ≈ 236.6 mL, 1 tablespoon ≈ 14.8 mL, and 1 teaspoon ≈ 4.9 mL — useful when following a recipe written in a measurement system different from the tools in your kitchen.

One conversion that trips people up: US and UK/Imperial volume units share the same names but aren't the same size. A US gallon (3.785 liters) is meaningfully smaller than a UK/Imperial gallon (4.546 liters) — about 17% smaller — and the same is true proportionally for pints and fluid ounces in each system. This converter uses US customary definitions throughout, so a UK recipe or fuel-economy figure using "gallons" or "pints" needs its own separate Imperial conversion, not this one.

For larger volumes, cubic meters and liters relate simply: 1 cubic meter = 1,000 liters, since a liter is defined as exactly one-thousandth of a cubic meter — useful for construction, shipping, or any context measuring larger quantities of liquid or gas.

As with other unit converters here, results are computed to full precision using each unit's exact defined conversion factor, so there's no accumulated rounding error regardless of how many units apart your conversion spans.

Fuel economy and engine size are two other common contexts where volume units cross borders: many countries measure fuel in liters while the US uses gallons, and this converter handles that conversion directly (for actual fuel efficiency conversions like miles-per-gallon to liters-per-100km, the dedicated Fuel Economy Converter handles that specialized combined unit).

Medical and scientific contexts often use smaller metric volumes — milliliters and cubic centimeters (which are actually identical: 1 mL = 1 cm³ exactly) — for dosing and lab measurements, where precision matters more than the rough approximations sufficient for cooking.