About this Volume Converter
Volume conversions are tricky because units like 'pints' and 'gallons' can vary between countries (US vs UK). This calculator uses US Standard units, common in American recipes and fuel measurements, and converts them to the Metric system used globally.
Who this calculator is for
- Home cooks, baristas, and bakers converting recipe volumes between cups, ounces, milliliters, and liters.
- Drivers and travelers translating fuel and container volumes between US customary and metric units.
- Students and lab users comparing common liquid measures without doing manual fraction math.
When to use it
- Use it when a recipe lists cups or fluid ounces but your measuring tools are metric.
- Use it to compare tank, bottle, or jug sizes listed in gallons, liters, quarts, or milliliters.
- Use it when checking portion sizes, beverage prep, or chemistry amounts that need quick liquid conversions.
How to use this calculator
- Input the Volume Amount.
- Select units like Liters, Gallons, Cups, or Fluid Ounces from the dropdowns.
- The conversion happens instantly.
Key assumptions
- US customary liquid units are used for gallons, quarts, pints, cups, and fluid ounces.
- The calculator converts scalar volume only and does not account for density, temperature expansion, or ingredient packing.
- Milliliter and liter conversions follow metric definitions exactly.
Accuracy and testing
Review formula sources, default test cases, assumptions, unit handling, rounding rules, and changelog for this calculator.
How this calculator works
All units are converted to a base unit (Liters) first.
* 1 US Gallon = 3.785 Liters
* 1 US Quart = 0.946 Liters
* 1 US Cup = 0.237 Liters (approx 240ml)
Inputs explained
US Liquid Gallon
The standard gallon used in the US (3.785 L). Distinct from the Imperial Gallon (4.546 L).
Fluid Ounce (fl oz)
A measure of volume, not weight. 1 Cup = 8 fl oz.
Understanding your results
Useful for converting gas prices (Liters to Gallons) or kitchen recipes (Cups to Milliliters).
Example scenarios
Fuel Tank
50 Liters to Gallons. Result: ~13.2 US Gallons.
Recipe
2 Cups to Milliliters. Result: ~473 mL.
Key Features
- Kitchen units included
- High precision decimal
- US Standard logic
Tips & Best Practices
- Remember the kitchen hierarchy: 1 Gallon = 4 Quarts = 8 Pints = 16 Cups.
- Milliliters (mL) and Cubic Centimeters (cc) are equal (1 mL = 1 cc).
Glossary of Terms
- Imperial System
- The British system. An Imperial Pint is 20 oz, whereas a US Pint is 16 oz.
- Metric System
- Based on the Liter. 1 Liter = 1000 Milliliters.