What is the difference between calories and kilocalories?

1 kilocalorie (kcal) = 1,000 calories. Food labels list kilocalories but often label them simply as 'Calories' (capital C).

How do I convert kWh to joules?

Multiply by 3,600,000. One kilowatt-hour equals 3.6 million joules.

A British Thermal Unit is the amount of energy needed to raise 1 pound of water by 1 °F. It equals approximately 1,055 joules.

An extremely small unit of energy used in particle physics. 1 eV ≈ 1.602 × 10⁻¹⁹ joules.

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Convert between energy units including joules, calories, kilowatt-hours, and BTU. Perfect for physics, nutrition, and engineering.

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