How to Use the Volume Unit Converter
Volume units in the US include fluid ounces, cups, tablespoons, teaspoons, and gallons — alongside the metric milliliters and liters used internationally. Recipe conversions, comparing beverage sizes, or scientific measurement all benefit from quick volume unit switching.
Enter any value, choose its unit, and see instant conversions across all 8 volume units at once. Based on US customary measurements.
Key Volume Conversion References (US Standard)
- 1 US cup = 236.588 mL = 8 fl oz
- 1 US tbsp = 14.787 mL = 3 tsp
- 1 US fl oz ≈ 29.57 mL
- 1 US gallon = 128 fl oz ≈ 3.785 L
Common uses: scaling recipes up or down (cups to mL), comparing drink sizes (oz to mL), understanding gas prices per gallon in liters, and converting pharmacy or science measurements between metric and US units.
Frequently Asked Questions
1 US cup = 236.588 mL. Note that a metric cup is 250 mL and a Japanese cup is 200 mL, so international recipes may differ slightly.
1 US cup = 16 US tablespoons = 48 teaspoons. Half a cup = 8 tablespoons, quarter cup = 4 tablespoons.
1 US gallon = 128 US fluid ounces = 16 cups ≈ 3.785 liters. A half-gallon jug of milk is 64 fl oz ≈ 1.89 L.