Volume Converter: Convert Between Liters, Gallons, Cups, and More
Our Volume Converter provides accurate conversions between milliliters (mL), liters (L), US fluid ounces (fl oz), cups, pints, quarts, gallons, cubic meters (m³), cubic inches (in³), and cubic feet (ft³). Whether you're cooking, working on a science project, planning a construction project, or simply need to convert volume measurements, this tool delivers precise results instantly.
What This Calculator Does
The Volume Converter converts volumes between ten common units:
- Milliliters (mL): The metric base unit for small volumes, commonly used in cooking and medicine.
- Liters (L): The standard metric unit for volume, equal to 1,000 milliliters.
- US Fluid Ounces (fl oz): A US customary unit equal to approximately 29.57 milliliters.
- Cups: A US customary unit equal to 8 fluid ounces or approximately 237 milliliters.
- Pints (pt): A US customary unit equal to 2 cups or 16 fluid ounces.
- Quarts (qt): A US customary unit equal to 2 pints or 4 cups.
- Gallons (gal): A US customary unit equal to 4 quarts or 16 cups.
- Cubic Meters (m³): The metric unit for large volumes, equal to 1,000 liters.
- Cubic Inches (in³): A US customary unit for volume, commonly used in engineering.
- Cubic Feet (ft³): A US customary unit for large volumes, equal to 1,728 cubic inches.
Simply enter a volume value, select the unit you're converting from, and instantly see the equivalent values in all other units.
How to Use It
- Enter volume: Type the volume value you want to convert.
- Select source unit: Choose whether your input is in milliliters, liters, fluid ounces, cups, pints, quarts, gallons, cubic meters, cubic inches, or cubic feet.
- Click "Calculate" to see conversions to all other volume units.
The calculator updates results automatically, showing equivalent volumes in all units with precise decimal accuracy.
Interpreting Your Results
- Milliliters: The smallest unit shown, useful for precise measurements.
- Liters: The standard metric unit, commonly used worldwide.
- Fluid Ounces: US customary unit for liquids.
- Cups: Commonly used in cooking and recipes.
- Pints and Quarts: Intermediate US customary units.
- Gallons: Used for large liquid volumes, especially fuel and water.
- Cubic Meters: Used for large volumes in scientific and engineering contexts.
- Cubic Inches: Used in engineering and manufacturing.
- Cubic Feet: Used for large volumes in construction and shipping.
All results are displayed with 4-6 decimal places for accuracy, depending on the unit's typical precision needs.
Common Mistakes to Avoid
- Confusing US and UK units: This calculator uses US customary units (US gallon = 3.785 L). UK imperial units differ (UK gallon = 4.546 L).
- Mixing up fluid ounces and weight ounces: Fluid ounces measure volume; ounces measure weight.
- Confusing cups: US cups (237 mL) differ from metric cups (250 mL) used in some countries.
- Using wrong precision: For cooking, 1-2 decimal places are usually sufficient; for scientific work, more precision may be needed.
- Not accounting for density: Volume conversions don't account for ingredient density—1 cup of flour weighs differently than 1 cup of sugar.
Keep Learning
Explore these guides to master volume conversions:
Sources
- National Institute of Standards and Technology (NIST) – Measurement standards and conversion factors
- US Food and Drug Administration (FDA) – Food labeling volume standards
- International Bureau of Weights and Measures – Metric volume definitions
