Are dietary Calories the same as physics calories?
No, a dietary Calorie (with a capital C) is actually a kilocalorie (kcal), meaning it is 1,000 times larger than a standard physics calorie.
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Energy Converter - Joules, Calories, kWh | 1ClickTools
Free online energy converter. Instantly convert Joules, Kilojoules, Calories, Kilowatt-hours, and more in real-time.
Frequently Asked Questions
What is a Watt-hour?
A Watt-hour is a unit of energy equivalent to one watt of power expended for one hour of time, commonly used to measure electricity usage.
How many Joules are in a Calorie?
There are approximately 4.184 Joules in one small physics calorie, and 4184 Joules in one dietary Calorie (kcal).
When should I use Electronvolts (eV)?
Electronvolts are an extremely small unit of energy primarily used in quantum mechanics and particle physics to measure atomic-level energy.
How accurate is this energy converter tool?
All processing runs entirely in your browser using verified algorithms. Results are computed with full double-precision — no server-side rounding or data transmission occurs.