Volume Converter – Liters, Gallons, Cups & More
Convert between liters, milliliters, US gallons, cups and fluid ounces. Accurate volume conversions for cooking, fuel and liquids. No sign-up.
Volume Converter
Convert between liters, gallons, milliliters, cubic feet and other volume units.
1 Liter (L) = 1000 Milliliter (mL)
How volume conversion works
Volume uses a base unit of liters. All units convert to liters first, then to the target. Key factors: 1 US gal = 3.785 L, 1 US cup ≈ 0.237 L, 1 fl oz ≈ 0.0296 L.
Common volume conversions and uses
Volume conversion is essential for cooking (cups to mL for recipes), fuel (gallons to liters for trips), and beverages (fluid ounces to liters). The metric system uses liters and milliliters; the US uses gallons, cups, and fluid ounces. This converter handles US fluid measures. Use it with our fuel cost calculator (which can use gallons or liters), or for scaling recipes. All conversions run in your browser with no data stored.
For weight conversions (grams, ounces), use the weight converter. For length, use the length converter. For a general tool covering multiple categories, use the unit converter. Note: US cups and fl oz differ slightly from metric; this converter uses standard US measures.