100 Calories To Joules

Convert between chemical, electrical and physical energy units.

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

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Common Benchmarks

Cup of coffee 5 kJ
Microwave 10 minutes 0.17 kWh
Food calorie 4184 J
Match stick 1 kJ
Phone battery 40 kJ
1 kWh 3.6 MJ

Frequently Asked Questions

How much is 100 calories in joules?

100 calories equals 418.4 joules.

How many joules is 1 calorie?

1 calorie equals 4.184 joules.

How many calories is 1 joule?

1 joule equals 0.239005736138 calories.

What is the difference between calories and joules?

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 joules 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 4.184 joules?

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