🧪 Capacity Calculator

Convert between liters, gallons, mL, and more.

Milliliter (mL)0

Gallon (gal)0

Quart (qt)0

Pint (pt)0

Capacity Unit Information

1 gallon (US) = 3.78541 L
1 gallon (UK) = 4.54609 L

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Types of Capacity Units and Basic Concepts

Capacity represents the volume that liquids or gases can occupy, commonly measured in liters (L), milliliters (mL), gallons, quarts, pints. 1 liter (L) = 1000 milliliters (mL) = 1000 cm³. A water bottle is typically 500mL = 0.5L. Gallon differs between US and UK: US gallon 1 gal = 3.78541 L, UK gallon 1 gal = 4.54609 L. 1 quart = 1/4 gallon = 0.946 L, 1 pint = 1/2 quart = 0.473 L.

Unit Conversion Formulas and Examples

Liter ↔ Milliliter: 1L = 1000mL. Example: 2.5L = 2500mL. Recipe water 250mL = 0.25L = 1 cup. Liter ↔ US Gallon: 1 gal = 3.78541 L. Example: 60L fuel tank = 60 ÷ 3.78541 = 15.85 gal. Gallon ↔ Liter: 20-gallon aquarium = 20 × 3.78541 = 75.7L. Milliliter ↔ Cubic Centimeter: 1mL = 1cm³.

Difference Between US and UK Gallons

US gallon: 1 gal = 3.78541 L. Used in US gas stations, milk packaging, international oil trading. 1 barrel = 42 US gallons = 158.987 L. UK gallon (Imperial): 1 gal = 4.54609 L. Used in UK, Canada, Australia. Same 10 gallons: US = 37.9L, UK = 45.5L, about 20% difference. Fuel Economy: US vehicle 25 MPG = 10.6 km/L. Important to distinguish when traveling abroad.

Cooking and Baking Capacity Measurements

Korean Measurements: 1 cup = 200mL (rice), 240mL (liquid), 1 tablespoon = 15mL, 1 teaspoon = 5mL. US Measurements: 1 cup = 236.588 mL, 1 Tbsp = 14.787 mL, 1 tsp = 4.929 mL. Baking Precision: 1mL difference affects texture. Use electronic scale (g) or measuring cup (mL markings). Milk 200mL ≈ 206g (density 1.03), olive oil 200mL ≈ 184g (density 0.92).

Fuel Efficiency and Capacity Calculation

Vehicle Fuel Economy: 12 km/L vehicle uses 100 ÷ 12 = 8.33L per 100km. MPG Conversion: 12 km/L = 28.2 MPG (US). Fuel Tank Capacity: Small car 40~50L, midsize 60~70L, SUV 70~80L. 60L tank, 10 km/L efficiency = 600km range. Diesel vs Gasoline: Diesel (14 km/L) is 40% more efficient than gasoline (10 km/L). EV Conversion: Electric car 5 km/kWh ≈ 30 km/L gasoline equivalent.

Container Selection and Packaging Capacity

Beverage Packaging: Canned drinks 250mL/355mL (US 12oz), bottles 500mL/1.5L/2L. Cosmetics Containers: Shampoo 500mL/1L, toner 150mL/200mL, essence 30mL/50mL. Airport liquid limit: 100mL or less containers, total 1L. Cooking Containers: Storage 300mL/500mL/1L/2L, pots 3L/5L/7L, pressure cooker 6L/10L. Aquariums: Small 10~20L, medium 50~100L, large 200~500L. 60L aquarium needs stand supporting 60kg (1L water = 1kg).

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How do I convert liters to milliliters?

One liter equals 1000 milliliters, so 2.5L equals 2500mL. Enter a value in this calculator to convert it instantly to mL, gallons, quarts, or pints.

What is the difference between a US gallon and a UK gallon?

A US gallon equals 3.78541 liters while a UK (Imperial) gallon equals 4.54609 liters, about 20% larger. Use the gallon type that matches the product's country of origin.

How many milliliters are in a cup used in recipes?

A US recipe cup is about 236.588mL, while many Korean recipes use 200mL for dry ingredients like rice and 240mL for liquids. For precise baking, a kitchen scale (grams) is more reliable than a cup.

How can I estimate driving range from fuel tank capacity?

Multiply the fuel tank capacity in liters by the fuel economy in km/L (or convert to MPG) to estimate range. For example, a 60L tank at 10 km/L gives roughly 600km of range.

Which units can this tool convert between?

It converts freely between liters (L), milliliters (mL), gallons (gal), quarts (qt), and pints (pt).