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
Complete Capacity Unit Conversion Guide (2025)
01
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.
02
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.
03
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.
04
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).
05
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.
06
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).