What is a Gallon?

A gallon is a unit of volume, larger than a pint, liter, and fluid ounce, but smaller than a cubic foot and a US barrel. It’s commonly used in daily life, with 1 gallon equal to 4 quarts, 8 pints, or 16 cups. This volume is approximately the daily water intake for an average adult male.

Gallon Conversions: US and UK

Our calculator accommodates both US and UK gallons, providing conversion to cups, liters, cubic feet, inches, quarts, ounces, and even raindrops. Here’s a quick overview:

Gallon Units:

  • UK Gallon: 1 UK gallon = 1.201 US gallons
  • US Gallon: 1 US gallon = 0.8317 UK gallons
  • US Dry Gallon
  • 1k US Gallons

Volume Conversions:

  1. Liters to Gallons:
    • 1 US Gallon = 3.785 Liters
    • 1 UK Gallon = 4.546 Liters
  2. Cubic Measurements to Gallons:
    • Cubic Centimeters, Cubic Decimeters, Cubic Meters, Cubic Kilometers
    • Cubic Inches, Cubic Feet, Cubic Yards, Cubic Miles
  3. Quarts to Gallons:
    • 1 US Gallon = 4 US Quarts
    • 1 UK Gallon = 4.804 UK Quarts
  4. Ounces to Gallons:
    • 1 US Gallon = 128 US Fluid Ounces
    • 1 UK Gallon = 153.72 UK Fluid Ounces
  5. Gallons to Cups:
    • 1 US Gallon = 16 US Cups
    • 1 UK Gallon = 19.215 UK Cups

Water Weight: Gallons to Kilograms and Pounds

Water weighs approximately 1 kilogram per liter. Here’s how 1 US and UK gallon weigh at different temperatures:

  • 4 °C / 39.2 °F:
    • 1 US Gallon = 3.7856 kg / 8.346 lb
    • 1 UK Gallon = 4.546 kg / 10.023 lb
  • 21 °C / 69.8 °F:
    • 1 US Gallon = 3.778 kg / 8.33 lb
    • 1 UK Gallon = 4.538 kg / 10.004 lb
  • 30 °C / 86 °F:
    • 1 US Gallon = 3.769 kg / 8.31 lb
    • 1 UK Gallon = 4.527 kg / 9.98 lb

Using the Gallon Calculator

Choose between the volume converter and water volume-to-weight mode. In the volume converter, input a value next to any unit, and the others will fill automatically. In the water volume-to-weight mode, input either volume or weight, and get the missing value.

Frequently Asked Questions (FAQ)

How to calculate gallons in a pool? To find the gallons in a pool, determine its volume and convert it to gallons using the appropriate conversion factor (e.g., divide cubic inches by 231 or multiply cubic feet by 7.48).

How to convert cubic inches to gallons? Divide the number of cubic inches by 231 for US gallons or by 277.4 for UK gallons.

How to convert cubic feet to gallons? Multiply cubic feet by 7.48 for US gallons or by 6.229 for UK gallons.

How to convert quarts to gallons? Divide the number of quarts by 4.

How to convert gallons into cups? Multiply the number of gallons by 16.

Explore our universal conversion calculator for temperature, length, area, volume, and weight conversions, along with explanations of SI unit prefixes!