1000 Calories (thermochemical) to Joules

1000 cal = 4184 J

Calculation: J = 1000 cal × 4.184 = 4184 J

Calorie (thermochemical) to Joule Converter

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How much energy is 1,000 cal?

1,000 cal (4.18 kJ) is comparable to the total heat released by burning a match.

What does 1,000 cal look like?

Comparable to the total heat released by burning a match
1,000 cal (4.18 kJ) is comparable to the total heat released by burning a match.

How to Convert Calorie (thermochemical) to Joule

1 calorie (thermochemical) = 4.184 Joules exact

Joule = Calorie (thermochemical) × 4.184

Example: 1000 cal × 4.184 = 4184 J

Reverse Conversion

To convert Joules back to calories (thermochemical):

  • Remember, 1 joule equals 0.239006 calories (thermochemical).
  • To convert 4184 J to cal, multiply 4184 x 0.239006, resulting in 1000 cal.

exact This conversion factor is exact by international definition.

1000 cal is also equal to:

  • 4.184 kilojoule
  • 0.0011622 kilowatt hour
  • 1 calorie (nutritional)
  • 3.9657 Btu
  • 1.1622 watt hour

Frequently Asked Questions

How much is 1000 calories (thermochemical) in Joules?

1000 calories (thermochemical) equals 4184 Joules. This is calculated by multiplying 1000 by the conversion factor 4.184.

What does 1000 calories (thermochemical) look like in Joules?

1000 calories (thermochemical) equals 4184 Joules, a conversion used in nutrition calculations, electrical energy billing, and thermal engineering.

How do you calculate 1000 calories (thermochemical) to Joules?

Multiply 1000 by the conversion factor 4.184. The calculation is 1000 × 4.184 = 4184 Joules. This factor is defined by international measurement standards.

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1000 calories (thermochemical) = 4184 Joules
1000 calories (thermochemical) = 4184 Joules — conversion chart

For general conversions between calories (thermochemical) and Joules, see the calories (thermochemical) to Joules converter.

Conversion factors verified against NIST, BIPM, ISO 80000-4 1 cal_IT = 4.1868 J by definition (BIPM/ITS-90). Last reviewed: April 2026
Tiago Fernandes Reviewed by Tiago Fernandes

All unit conversions on CoolConversion use conversion factors defined or documented by internationally recognised standards bodies (such as ISO and NIST), including both SI and non-SI units.