Volume Converter — Overview
A volume converter helps you quickly convert between different volume units used around the world. Whether you need liters to gallons for cooking, cubic meters for construction, or milliliters for science, this tool handles all conversions instantly.
Convert: Milliliters (mL), liters (L), gallons (US/imperial), cubic feet (ft³), cubic meters (m³), cubic inches (in³), pints, quarts, cups, tablespoons, teaspoons, and barrels.
Use Case: Cooking conversions, construction measurements, pool volume calculations, aquarium sizing, fuel tank capacity, and scientific conversions.
Volume Converter — Convert Units Instantly
Common Volume Units — Understanding Each Unit
Volume Measurement Tips — Accurate Conversions
1. Metric vs Imperial**
Metric (liters, mL, m³) used in most countries. Imperial (gallons, cubic feet, cups) used in USA and Canada. Know which system your recipe or project uses.
2. US Gallon vs Imperial Gallon**
These are different! US gallon = 3.785 L. Imperial gallon = 4.546 L. When converting recipes, always check which gallon is specified.
3. Fluid Ounce Confusion**
Don't confuse fluid ounces (volume) with weight ounces (mass). 1 fl oz = 29.57 mL. A US cup = 8 fl oz, but different liquids weigh differently.
4. Cooking Conversions**
US recipes use cups and tablespoons. Most other countries use mL. 1 cup ≈ 240 mL (rounded). 1 tbsp ≈ 15 mL. Keep a conversion chart in your kitchen.
5. Large Volume Projects**
For pools, water tanks, or excavation, always use cubic meters or gallons. Small rounding errors on small units = large errors on big projects. Double-check calculations.
Real-World Volume Examples — Common Conversions
Cooking & Recipes
1 cup flour = 240 mL
1 tablespoon butter = 15 mL
1 teaspoon salt = 5 mL
2 cups water = 480 mL
2 US gallons juice = 7.57 liters
Pool & Water
Average swimming pool = 2.5 million gallons = 9,460 cubic meters
Olympic pool = 2.5 million liters = 2,500 m³
Garden hose flow = 40-60 gallons/minute
Fuel & Vehicles
Gas tank (typical car) = 15 US gallons = 56.8 liters
Liter of gasoline ≈ $1.30 in USA (varies by region)
Diesel engine = often measured in cubic inches of displacement (e.g., 5.9L Cummins = 359 cubic inches)
Construction & Delivery
Concrete truck = 8-10 cubic yards ≈ 6-8 cubic meters
Shipping container = 33-35 cubic meters
Beer barrel = 36 US gallons ≈ 136 liters
Complete Conversion Table — All Factors
Below is a comprehensive table showing how all units relate to each other. Multiply the value in the unit column by the factor in the row to convert.
| Unit | to mL | to L | to gal (US) | to ft³ | to m³ |
|---|---|---|---|---|---|
| Milliliter (mL) | 1 | 0.001 | 0.000264 | 0.0000353 | 0.000001 |
| Liter (L) | 1000 | 1 | 0.264 | 0.0353 | 0.001 |
| US Gallon (gal) | 3785.41 | 3.785 | 1 | 0.1337 | 0.00379 |
| Imperial Gallon | 4546.09 | 4.546 | 1.201 | 0.1605 | 0.00455 |
| Cubic Foot (ft³) | 28316.8 | 28.317 | 7.481 | 1 | 0.0283 |
| Cubic Meter (m³) | 1000000 | 1000 | 264.172 | 35.3147 | 1 |
| Cubic Inch (in³) | 16.3871 | 0.0164 | 0.00433 | 0.000579 | 0.0000164 |
| Cup (US) | 236.588 | 0.237 | 0.0625 | 0.00835 | 0.000237 |
| Pint (US) | 473.176 | 0.473 | 0.125 | 0.0167 | 0.000473 |
| Quart (US) | 946.353 | 0.946 | 0.25 | 0.0334 | 0.000946 |
| Tablespoon (tbsp) | 14.7868 | 0.0148 | 0.0039 | 0.000522 | 0.0000148 |
| Teaspoon (tsp) | 4.92892 | 0.00493 | 0.0013 | 0.000174 | 0.00000493 |
| Barrel (US) | 119240.5 | 119.241 | 31.5 | 4.2079 | 0.1192 |
Volume Conversion Tips & Tricks
Frequently Asked Questions About Volume Conversion
Q: What's the difference between US gallon and imperial gallon?
US gallon = 3.785 liters. Imperial gallon (used in UK, Canada, Australia) = 4.546 liters. ~20% difference. Always check which gallon is specified, especially in recipes or fuel conversions.
Q: Are fluid ounces the same as ounces?
No. Fluid ounces (fl oz) measure volume. Ounces (oz) measure weight. They're unrelated. 1 fl oz of water ≈ 1 oz weight, but other liquids differ. Always use fluid ounces for volume.
Q: Why does my recipe say 1 cup but I need grams?
Volume (cups, mL) ≠ weight (grams, oz). Different ingredients have different densities. 1 cup flour ≠ 1 cup water in grams. Use a scale or lookup weight equivalents for your specific ingredient.
Q: How much does 1 liter of water weigh?
1 liter of water = 1 kilogram (at 4°C). This is how the liter was defined. Other liquids differ (1L oil ≈ 0.92 kg). Very convenient for water calculations.
Q: What's the best unit for a swimming pool?
Use cubic meters for metric countries or gallons for US/Canada. Olympic pool = 2.5 million liters. Average backyard pool = 10,000-15,000 gallons. Choose based on your region's standard.
Q: How do I calculate aquarium volume?
Length × Width × Height = cubic inches. Divide by 231 to get gallons. For metric: Length × Width × Height (in cm) = mL. A 10-gallon aquarium is roughly 10" × 18" × 12" (exterior size is larger).