Energy Converter - Convert Joules to Calories, kWh & More

Convert energy between joules, calories, kWh, BTU, and other energy units. Free energy conversion calculator with instant results.

Energy Unit Converter

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Quick Conversions

1 kWh
= 3.6 MJ
1 kcal
= 4.184 kJ
1 BTU
= 1.055 kJ
1 cal
= 4.184 J

About Energy Converter

Our energy converter supports conversion between various energy units including joules, calories, kWh, BTU, and more. Perfect for physics calculations, nutrition analysis, electrical consumption, and engineering applications.

Common Energy Conversions

  • kWh to Joules: Multiply by 3,600,000 (1 kWh = 3.6 MJ)
  • Calories to Joules: Multiply by 4.184 (1 cal = 4.184 J)
  • BTU to Joules: Multiply by 1055.06 (1 BTU = 1055 J)
  • Kilocalories to Kilojoules: Multiply by 4.184 (1 kcal = 4.184 kJ)
  • Watt Hours to Joules: Multiply by 3600 (1 Wh = 3600 J)

When to Use Energy Converters

Energy converters are essential for electrical bill calculations, nutrition analysis, physics problems, engineering design, HVAC calculations, and scientific research involving energy measurements.