Gallons to Pounds Converter (gal to lb)
Convert US gallons to pounds (gal to lb) for any substance. Select from 20 common liquids or enter a custom density. See results in pounds, ounces, and kilograms.
WEIGHT IN POUNDS
8.35 lbs
OUNCES
133.5 oz
KILOGRAMS
3.79 kg
LITERS
3.79 L
FORMULA
1Γ8.35Γ1
Quick Reference β Water
| Gallons | Pounds | Ounces | Kilograms |
|---|---|---|---|
| 0.25 gal | 2.09 lbs | 33 oz | 0.95 kg |
| 0.5 gal | 4.17 lbs | 67 oz | 1.89 kg |
| 1 gal | 8.35 lbs | 134 oz | 3.79 kg |
| 1.5 gal | 12.52 lbs | 200 oz | 5.68 kg |
| 2 gal | 16.69 lbs | 267 oz | 7.57 kg |
| 3 gal | 25.04 lbs | 401 oz | 11.36 kg |
| 4 gal | 33.38 lbs | 534 oz | 15.14 kg |
| 5 gal | 41.73 lbs | 668 oz | 18.93 kg |
| 7.5 gal | 62.59 lbs | 1001 oz | 28.39 kg |
| 10 gal | 83.45 lbs | 1335 oz | 37.85 kg |
How to Convert Gallons to Pounds
Gallons measure volume while pounds measure weight. To convert, multiply by 8.3454 (the weight of 1 gallon of water in pounds) and the substance's density:
Example: 1 gallon of water (density 1.00 g/mL)
= 1 Γ 8.3454 Γ 1.00 = 8.35 lbs
Example: 1 gallon of milk (density 1.03 g/mL)
= 1 Γ 8.3454 Γ 1.03 = 8.60 lbs
Example: 5 gallons of gasoline (density 0.74 g/mL)
= 5 Γ 8.3454 Γ 0.74 = 30.88 lbs
How Much Does a Gallon Weigh? β By Substance
| Liquid | Density | 1 Gallon = | 5 Gallons = |
|---|---|---|---|
| Water | 1.00 g/mL | 8.35 lbs | 41.73 lbs |
| Whole Milk | 1.03 g/mL | 8.60 lbs | 42.98 lbs |
| Honey | 1.43 g/mL | 11.93 lbs | 59.67 lbs |
| Olive Oil | 0.91 g/mL | 7.59 lbs | 37.97 lbs |
| Vegetable Oil | 0.92 g/mL | 7.68 lbs | 38.39 lbs |
| Gasoline | 0.74 g/mL | 6.18 lbs | 30.88 lbs |
| Diesel Fuel | 0.85 g/mL | 7.09 lbs | 35.47 lbs |
| Maple Syrup | 1.33 g/mL | 11.10 lbs | 55.50 lbs |
| Heavy Cream | 1.01 g/mL | 8.43 lbs | 42.14 lbs |
| Rubbing Alcohol | 0.79 g/mL | 6.59 lbs | 32.96 lbs |
Common US Containers β How Much Do They Weigh?
| Container | Volume | Water Weight | Actual Liquid |
|---|---|---|---|
| Milk jug | 1 gallon | 8.35 lbs | 8.60 lbs (milk) |
| Gas can (small) | 2 gallons | 16.69 lbs | 12.35 lbs (gas) |
| Paint bucket | 5 gallons | 41.73 lbs | ~50 lbs (latex paint) |
| Water cooler bottle | 5 gallons | 41.73 lbs | 41.73 lbs (water) |
| Gas can (large) | 5 gallons | 41.73 lbs | 30.88 lbs (gas) |
| Trash can (typical) | 32 gallons | 267.1 lbs | β |
| Bathtub (full) | ~60 gallons | 500.7 lbs | β |
| Water heater (standard) | 40β50 gallons | 334β418 lbs | β |
US Volume Unit Hierarchy
| Unit | Equivalent | Water Weight |
|---|---|---|
| 1 fluid ounce | 2 tablespoons | 0.065 lbs |
| 1 cup | 8 fluid ounces | 0.522 lbs |
| 1 pint | 2 cups = 16 fl oz | 1.044 lbs |
| 1 quart | 2 pints = 32 fl oz | 2.087 lbs |
| 1 gallon | 4 quarts = 128 fl oz | 8.345 lbs |
"A Pint's a Pound the World Around"
This classic American saying is approximately true: 1 US pint of water weighs about 1.044 pounds β close enough to 1 pound for quick kitchen estimates. However, it only works for water-like liquids. A pint of honey weighs about 1.49 lbs, while a pint of oil weighs only ~0.95 lbs.
US Gallon vs. Imperial Gallon
| Gallon Type | Volume | Water Weight | Where Used |
|---|---|---|---|
| US Gallon | 3.785 liters (128 fl oz) | 8.345 lbs | United States |
| Imperial Gallon | 4.546 liters (160 imp fl oz) | 10.022 lbs | UK (historical) |
An Imperial gallon is 20% larger than a US gallon. This converter uses the US gallon (3.785 liters).
What Is a Gallon?
A US gallon (gal) is a unit of volume equal to 128 US fluid ounces, 4 quarts, 8 pints, or 3.785 liters. It is the standard unit for measuring fuel, milk, paint, and large liquid volumes in the United States. Gas pumps, milk jugs, and paint buckets are all sized in gallons.
What Is a Pound?
A pound (lb) is a US customary and imperial unit of weight equal to 16 ounces or approximately 453.592 grams. It is the primary unit of weight used in the United States for groceries, shipping, body weight, and everyday commerce. The abbreviation "lb" comes from the Latin "libra."