Volume Converter
3.79
1 gal = 3.79 L
US to Metric
| US | Metric |
|---|---|
| 1 fluid ounce | 29.57 mL |
| 1 cup (8 fl oz) | 236.6 mL |
| 1 pint (16 fl oz) | 473.2 mL |
| 1 quart (32 fl oz) | 946.4 mL |
| 1 gallon (128 fl oz) | 3.785 L |
| 5 gallons | 18.93 L |
| 1 cubic foot | 28.32 L |
| 1 cubic yard | 764.6 L |
Metric to US
| Metric | US |
|---|---|
| 100 milliliters | 3.38 fl oz |
| 250 milliliters | 8.45 fl oz / 1.06 cup |
| 500 milliliters | 16.9 fl oz / 1.06 pt |
| 1 liter | 33.8 fl oz / 1.06 qt |
| 2 liters | 67.6 fl oz / 0.53 gal |
| 5 liters | 1.32 gal |
| 20 liters | 5.28 gal |
| 1 cubic meter | 264.2 gal / 35.3 ft³ |
US vs UK Units
Imperial units differ between US and UK systems
| Unit | US | UK | Note |
|---|---|---|---|
| Fluid Ounce | 29.57 mL | 28.41 mL | UK slightly smaller |
| Pint | 473 mL (16 fl oz) | 568 mL (20 fl oz) | UK 20% larger |
| Quart | 946 mL | 1,137 mL | UK 20% larger |
| Gallon | 3.785 L | 4.546 L | UK 20% larger |
Common Tank & Container Sizes
Small fish tank5 gal / 19 L
Medium aquarium20 gal / 76 L
Large aquarium55 gal / 208 L
Water heater (typical)40-50 gal / 150-190 L
Bathtub (full)80 gal / 300 L
Hot tub (small)200-300 gal / 750-1,135 L
Rain barrel55 gal / 208 L
IBC tote275 gal / 1,040 L
Pool Volume Estimates
Kiddie pool50-200 gal / 190-760 L
Above-ground (12ft round)~3,400 gal / 12,900 L
Above-ground (15ft round)~5,300 gal / 20,000 L
Above-ground (18ft round)~7,600 gal / 28,800 L
In-ground (small)~10,000 gal / 37,900 L
In-ground (medium)~20,000 gal / 75,700 L
In-ground (large)~30,000+ gal / 113,500+ L
Olympic pool660,000 gal / 2,500,000 L
Quick Tips
Gallons to Liters
Multiply US gallons by 3.8 for a quick estimate. Example: 10 gal × 3.8 ≈ 38 L
Liters to Gallons
Divide liters by 3.8 for a quick estimate. Example: 20 L ÷ 3.8 ≈ 5.3 gal
Cubic Feet to Gallons
Multiply cubic feet by 7.5 for gallons. Example: 10 ft³ × 7.5 ≈ 75 gal
Pool Volume Formula
For rectangular pools: Length × Width × Avg Depth × 7.5 = gallons