English
العربية
Deutsch
Español
Français
Italiano
Português
Русский
Türkçe
Tiếng Việt
Volume Converter - Convert Between Liters, Gallons, mL, Cup Online Free
Convert between liters, gallons, milliliters, cups, fluid ounces, and more.
What Is a Volume Converter?
A volume converter is a free tool that converts liquid and dry volume between metric and imperial units instantly.
Supported Units
- Liter (L) — Metric unit. 1 L = 1000 mL.
- Milliliter (mL) — 1/1000 of a liter.
- US Gallon — 3.78541 L or 128 fl oz.
- UK Gallon — 4.54609 L.
- Cup — US: 236.588 mL. Metric: 250 mL.
- Fluid Ounce — US: 29.57 mL. UK: 28.41 mL.
How Does Volume Converter Work?
1 US gallon = 3.78541 L, 1 UK gallon = 4.54609 L, 1 L = 4.227 US cups, 1 US cup = 236.588 mL.
How to Use This Tool
- Enter a numeric value — Type the measurement you want to convert.
- Select the source unit — Choose the unit you are converting from.
- Read the results — The tool instantly displays equivalents in every supported unit.
Try our Weight Converter or Digital Converter.
Use Cases
Cooking
Convert between cups, tbsp, tsp, and mL for recipes.
Chemistry
Translate between metric and US units for lab protocols.
Industrial
Calculate tank capacities and liquid storage.
Related Tools
- Weight Converter - Convert between kg, lb, oz, and g.
- Area Converter - Convert between m2, ft2, acres, and hectares.
- Speed Converter - Convert between km/h, mph, m/s, and knots.
Privacy
All calculations are performed entirely in your browser using JavaScript. No data is sent to our servers. We do not store, log, or share any values you enter.
US and UK gallons differ. Cup sizes vary by country and ingredient density.
AI Overview
A volume converter converts liquid and dry measurements between metric and imperial units.
Quick Answers
How many L in 1 US gal?
A:Approx 3.78541 L.
How many cups in 1 L?
A:Approx 4.227 US cups or 4 metric cups.
US vs UK gallon?
A:US: 3.785 L. UK: 4.546 L (20% larger).
How to Use the Volume Converter - Convert Between Liters, Gallons, mL, Cup Online Free
- Type the volume value you want to convert into the input field. Decimals and large numbers are supported.
- Choose your starting unit from the dropdown menu - for example liters, gallons, or cups.
- See the value converted into every supported unit instantly, including milliliters, pints, or tablespoons.
Benefits
- Instant Multi-Unit Conversion
- Multiple Unit Systems
- 100% Free to Use
- Works on Any Device
Common Mistakes
- Confusing US and UK gallons (~20% different)
- Assuming cup = 240 mL (US cup = 236.588 mL)
- Mixing fluid oz (volume) with oz (weight)
- Using volume for dry ingredients when weight is more accurate
Professional Tips
- Metric cup (250 mL) for Australian/NZ recipes
- 1 US tbsp = 14.787 mL; metric tbsp = 15 mL
- Convert to mL first for precise scaling
- Fl oz measures volume, not weight
Common Use Cases
Cooking
Convert recipe measurements for international recipes.
Chemistry
Convert reagent volumes between systems.
Industrial
Calculate tank capacities and volumes.
Everyday
Track daily water intake in your preferred unit.
Related Concepts
Liter (L)
Metric unit. 1 L = 1000 mL.
Milliliter (mL)
1/1000 of a liter.
US Gallon
3.78541 L or 128 fl oz.
UK Gallon
4.54609 L.
Cup
US: 236.588 mL. Metric: 250 mL.
Fluid Ounce
US: 29.57 mL. UK: 28.41 mL.
Frequently Asked Questions
References
Popular Related Tools
More Unit Converters
Explore our complete collection of unit converters.
