Energy Converter

Free online energy converter. Convert between different units of energy instantly and accurately.

Energy Units

• Joule (J) — the base unit
• Kilojoule (kJ) — 1 kJ = 1,000 J
• Calorie (cal) — 1 cal = 4.184 J
• Kilocalorie (kcal) — 1 kcal = 4,184 J
• Watt Hour (Wh) — 1 Wh = 3,600 J
• Kilowatt Hour (kWh) — 1 kWh = 3,600,000 J
• BTU (BTU) — 1 BTU = 1,055.06 J
• Foot-pound (ft⋅lb) — 1 ft⋅lb = 1.35582 J

Common Energy Conversions

• BTU to Joule
• Joule to Calorie
• Kilocalorie to Kilojoule
• Kilojoule to Calorie
• Kilojoule to Kilocalorie
• Watt Hour to Kilowatt Hour

Energy Conversion Guides

• Joules to Calories: Understanding Energy in Physics and Nutrition
• BTU to Joules: Measuring Heat Energy in Home and Science
• Kilojoules to Calories: The International Nutrition and Energy Guide
• mAh to Wh: What Battery Capacity Really Means and the 100 Wh Flight Limit

FAQ · Also from us: Simply Calculators
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