Volume Converter – Liters, Gallons & Cups Table

This volume converter routes every input through exact definitions — 1 liter = 0.26417205 US gallons and 1 cup = 236.5882365 mL. Enter a value, pick the source and target units, and the result appears instantly with the factor applied shown beside it. Liters and milliliters rule the metric kitchen and fuel pump, while US gallons, cups and fluid ounces fill American recipes, gas stations and bottle labels — and the imperial gallon used in the UK is a third system again. Every US liquid unit in this converter derives from the exact gallon of 3.785411784 L, so results are definition-exact: 1 fl oz = 29.5735295625 mL and 1 cup = 236.5882365 mL. A mini table of the head factor makes spot-checks immediate: 1 L = 0.2642 US gal; 5 L = 1.3209 US gal; 10 L = 2.6417 US gal; 50 L = 13.2086 US gal; 100 L = 26.4172 US gal. Spot-check with fuel: a 15 US-gallon tank is about 56.8 L, and a 500 mL bottle is 16.9 fl oz — two anchors that expose a US/UK gallon mix-up immediately.

1. 1

   Step 1

   Enter the value you want to convert

2. 2

   Step 2

   Select the source unit you are converting from

3. 3

   Step 3

   Select the target unit you want as the result

4. 4

   Step 4

   Read the exact result, then swap or copy as needed

• 1

  UK mpg figures divide by 1.2 before comparing to US mpg

• 2

  A 750 mL wine bottle is exactly 25.4 fl oz

• 3

  Baking: halve a cup = 16 tbsp = 236.6/2 mL

• 4

  Fuel anchor: 10 US gal ≈ 37.9 L; 50 L ≈ 13.2 US gal

• Confusing the fluid ounce (volume) with the avoirdupois ounce (28.35 g mass)

• Assuming a "cup" is metric (250 mL) when the recipe is American (236.6 mL)

• Measuring dry ingredients in fl oz — they are weight-based, not volume