Volume Converter

Convert between volume units instantly — milliliters, liters, gallons (US/UK), cups, fluid ounces, tablespoons, and teaspoons.

Conversions
Enter a value to convert
Quick Reference
1 L = 1,000 mL
1 US gallon ≈ 3.785 L
1 UK gallon ≈ 4.546 L
1 cup (US) ≈ 237 mL
1 fl oz (US) ≈ 29.6 mL
1 m³ = 1,000 L
Click any conversion result to copy it. US and UK gallons differ — US gallon is 3.785 L while UK gallon is 4.546 L.

How to Use This Tool

  1. 1

    Enter the volume value

    Type the volume measurement you want to convert. Supports decimal values for precise conversions.

  2. 2

    Select the source unit

    Choose the unit of your input from the dropdown — liters, gallons, cups, fluid ounces, and more.

  3. 3

    View all conversions

    The tool instantly displays the equivalent value in all 11 volume units. Your source unit is highlighted.

  4. 4

    Copy any result

    Click on any conversion result to copy it to your clipboard. Great for recipes, science, or everyday calculations.

Frequently Asked Questions

What's the difference between US and UK gallons?
A US gallon is 3.785 liters while a UK (imperial) gallon is 4.546 liters — about 20% larger. This tool supports both for accurate international conversions.
How many milliliters are in a cup?
A US cup is approximately 237 mL (236.588 mL exactly). Note that metric cup (250 mL) and UK cup differ slightly.
How do I convert cooking measurements?
Common conversions: 1 tbsp = 3 tsp ≈ 15 mL, 1 cup = 16 tbsp ≈ 237 mL, 1 fl oz ≈ 30 mL. Enter any value to see all equivalents instantly.
What is a cubic meter in liters?
1 cubic meter (m³) equals exactly 1,000 liters. This is the standard SI unit for large volume measurements.