Nutrition and food labels
Convert calories and kilojoules when comparing nutrition labels, recipes, and diet references.
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Energy Converters
Use these energy converters for food labels, science class, electricity, heating, appliances, batteries, and technical unit comparisons.
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Start with the energy conversions people use most often for quick answers.
Science and school
Switch between joules, kilojoules, calories, and BTU for physics, chemistry, and classroom problems.
Electricity and heating
Compare watt-hours, kilowatt-hours, joules, and BTU for appliances, batteries, and energy use.
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All energy conversion pages
Energy conversions for nutrition labels, meal tracking, and everyday energy values. Browse 18 calculators and direct converter pages.
Calories to Kilojoules Converter
Convert food Calories to kilojoules for nutrition labels, meal tracking, and energy values.
Kilojoules to Calories Converter
Convert kilojoules to food Calories for nutrition, meal planning, and energy comparisons.
JOULES TO CALORIES Converter
Convert joules to food calories with a fast local calculator, clear formula, and practical examples.
CALORIES TO JOULES Converter
Convert food calories to joules with a fast local calculator, clear formula, and practical examples.
JOULES TO KILOJOULES Converter
Convert joules to kilojoules with a fast local calculator, clear formula, and practical examples.
KILOJOULES TO JOULES Converter
Convert kilojoules to joules with a fast local calculator, clear formula, and practical examples.
JOULES TO BTU Converter
Convert joules to british thermal units with a fast local calculator, clear formula, and practical examples.
BTU TO JOULES Converter
Convert british thermal units to joules with a fast local calculator, clear formula, and practical examples.
JOULES TO WATT HOURS Converter
Convert joules to watt-hours with a fast local calculator, clear formula, and practical examples.
WATT HOURS TO JOULES Converter
Convert watt-hours to joules with a fast local calculator, clear formula, and practical examples.
JOULES TO KWH Converter
Convert joules to kilowatt-hours with a fast local calculator, clear formula, and practical examples.
KWH TO JOULES Converter
Convert kilowatt-hours to joules with a fast local calculator, clear formula, and practical examples.
KWH TO BTU Converter
Convert kilowatt-hours to british thermal units with a fast local calculator, clear formula, and practical examples.
BTU TO KWH Converter
Convert british thermal units to kilowatt-hours with a fast local calculator, clear formula, and practical examples.
CALORIES TO BTU Converter
Convert food calories to british thermal units with a fast local calculator, clear formula, and practical examples.
BTU TO CALORIES Converter
Convert british thermal units to food calories with a fast local calculator, clear formula, and practical examples.
WATT HOURS TO KWH Converter
Convert watt-hours to kilowatt-hours with a fast local calculator, clear formula, and practical examples.
KWH TO WATT HOURS Converter
Convert kilowatt-hours to watt-hours with a fast local calculator, clear formula, and practical examples.
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