Pounds to Gallons Converter
Convert pounds to gallons instantly with our accurate calculator. Perfect for cooking, chemistry, fuel calculations, and liquid measurements. Get precise results every time.
Pounds to Gallons Converter
Convert between pounds (lbs) and gallons (US or UK) using substance density.
Select the unit you want to convert from
Select the unit you want to convert to
Enter the value you want to convert
Select US gallon (3.785 L) or UK gallon (4.546 L)
Choose a common liquid to auto-fill its density value.
Enter the density of the substance in pounds per gallon.
What are pounds (lbs)?
The pound (lb or lbs) is a unit of mass used in the imperial and US customary systems of measurement. One pound is equal to approximately 0.453592 kilograms or 16 ounces.
The pound is widely used in the United States and other countries for measuring body weight, food products, and various materials.
What are gallons?
The gallon is a unit of volume used primarily in the United States and the United Kingdom. However, there are two different standards:
US Gallon: Equal to 3.785411784 liters or 128 US fluid ounces. Commonly used in the United States for measuring liquids like gasoline, milk, and water.
UK (Imperial) Gallon: Equal to 4.54609 liters or 160 UK fluid ounces. Used in the United Kingdom and some Commonwealth countries. It is approximately 20% larger than the US gallon.
How do you convert between pounds and gallons?
Understanding the Conversion
Converting between pounds (a unit of weight/mass) and gallons (a unit of volume) requires knowing the density of the substance. Different liquids have different densities, so the conversion factor varies.
The Conversion Formula
To convert pounds to gallons:
Gallons = Pounds ÷ Density (lb/gal)
To convert gallons to pounds:
Pounds = Gallons × Density (lb/gal)
Where density is measured in pounds per gallon.
US vs UK Gallons
Remember that:
• 1 US gallon = 3.785 liters
• 1 UK gallon = 4.546 liters
The density values differ depending on which gallon standard you're using. For example, water has a density of approximately 8.34 lb/US gal but 10.02 lb/UK gal.
Step-by-Step Process
- Determine the substance you're converting
- Find the density in lb/gal (or select from our ingredient list)
- Choose US or UK gallon
- Enter the value in pounds or gallons
- Apply the formula to get the result
Examples (using water, US gallons)
- 10 pounds to gallons:
10 lb ÷ 8.34 lb/gal = 1.199 US gal - 5 gallons to pounds:
5 gal × 8.34 lb/gal = 41.7 lbs - 20 pounds to gallons:
20 lb ÷ 8.34 lb/gal = 2.398 US gal
Common Densities
Here are some common liquid densities in lb/US gal:
• Water: ~8.34 lb/gal
• Milk: ~8.6 lb/gal
• Gasoline: ~6.3 lb/gal
• Diesel: ~7.1 lb/gal
• Olive oil: ~7.6 lb/gal
• Honey: ~12.0 lb/gal
Pounds to Gallons Conversion Table
The conversion of pounds to US gallons for certain values using water density at room temperature (8.33 lb/gal):
- Pounds (lbs)
- Gallons (gal) (water at room temp, US gallon)
- 1 lbs
- 0.12 gal
- 5 lbs
- 0.6002 gal
- 10 lbs
- 1.2005 gal
- 15 lbs
- 1.8007 gal
- 20 lbs
- 2.401 gal
- 25 lbs
- 3.0012 gal
- 30 lbs
- 3.6014 gal
- 40 lbs
- 4.8019 gal
- 50 lbs
- 6.0024 gal
- 60 lbs
- 7.2029 gal
- 70 lbs
- 8.4034 gal
- 80 lbs
- 9.6038 gal
- 90 lbs
- 10.8043 gal
- 100 lbs
- 12.0048 gal
- 150 lbs
- 18.0072 gal
- 200 lbs
- 24.0096 gal
- 250 lbs
- 30.012 gal
- 300 lbs
- 36.0144 gal
- 400 lbs
- 48.0192 gal
- 500 lbs
- 60.024 gal
