Energy Converter

Convert between chemical, electrical and physical energy units.

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Related Conversions
1 cal to kWh 10 cal to kWh 25 cal to kWh 50 cal to kWh 100 cal to kWh 200 cal to kWh 225 cal to kWh 400 cal to kWh 500 cal to kWh 600 cal to kWh 2,500 cal to kWh 10,000 cal to kWh
Reverse Conversions
5 kWh to cal 50 kWh to cal 100 kWh to cal 200 kWh to cal 250 kWh to cal 300 kWh to cal 400 kWh to cal 1,000 kWh to cal 5,000 kWh to cal 10,000 kWh to cal 50,000 kWh to cal 100,000 kWh to cal
More Energy Conversions
1 MJ to BTU 100 J to cal 1 GJ to kWh 1 GJ to MJ 2 MJ to BTU 100 kJ to kcal 1 MJ to kWh 2 GJ to MJ 10 BTU to J 250 cal to J

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Popular Conversions

Kilowatt-Hours to Megajoules Megajoules to Kilowatt-Hours Joules to Calories Kilocalories to Kilojoules British Thermal Units to Joules Watt-Hours to Joules

Common Benchmarks

Match stick 1 kJ
Cup of coffee 5 kJ
Food calorie 4184 J
100 W bulb for 1 hour 0.1 kWh
1 kWh 3.6 MJ
Phone battery 40 kJ

Formula

kWh = cal × 0.0000011622

Example

Example: convert 250 calories to kilowatt-hours.

250 cal = 0.00029056 kWh

Conversion table

calories (cal) kilowatt-hours (kWh)
1 cal 0.00000116 kWh
2 cal 0.00000232 kWh
5 cal 0.00000581 kWh
10 cal 0.00001162 kWh
20 cal 0.00002324 kWh
50 cal 0.00005811 kWh
100 cal 0.00011622 kWh

Explanation

These are both units.

How to convert calories to kilowatt-hours

  1. Start with the value in calories (cal).
  2. Multiply it by 0.0000011622.
  3. The result is the measurement in kilowatt-hours (kWh).

Example: 250 cal → 0.00029056 kWh

Frequently Asked Questions

How much is 250 calories in kilowatt-hours?

250 calories is about 0.00029056 kilowatt-hours.

How many kilowatt-hours is 1 calorie?

1 calorie equals 0.000001162222 kilowatt-hours.

How many calories is 1 kilowatt-hour?

1 kilowatt-hour equals 860420.6500956 calories.

What is the difference between calories and kilowatt-hours?

Both measure energy in SI. The main difference is usually scale: some units are convenient for smaller values, while others are used to express larger values more practically.

Where are calories and kilowatt-hours used?

They are used in physics and engineering to measure work, energy, and heat; the most practical unit depends on the magnitude.

Why does 1 calorie equal 0.000001162222 kilowatt-hours?

Because the units are defined with a fixed relationship. To convert calories to kilowatt-hours, multiply by that factor.