1000 Joules to Calories (thermochemical)

1000 J ≈ 239.01 cal

Calculation: cal = 1000 J × 0.239006 ≈ 239.01 cal

Joule to Calorie (thermochemical) Converter

Choose the type of measurement to convert
Select the source unit to convert from
Select the target unit to convert to
Enter a numeric value or fraction to convert
Sig. Figures:

How much energy is 1,000 J?

1,000 J is comparable to the total heat released by burning a match.

What does 1,000 J look like?

Comparable to the total heat released by burning a match
1,000 J is comparable to the total heat released by burning a match.

How to Convert Joule to Calorie (thermochemical)

1 joule = 0.239006 calories (thermochemical) exact

Calorie (thermochemical) = Joule × 0.239006

Example: 1000 J × 0.239006 = 239.01 cal

Reverse Conversion

To convert calories (thermochemical) back to Joules:

  • Remember, 1 calorie (thermochemical) equals 4.184 Joules.
  • To convert 239.01 cal to J, multiply 239.01 x 4.184, resulting in 1000 J.

exact This conversion factor is exact by international definition.

1000 J is also equal to:

  • 1 kilojoule
  • 0.00027778 kilowatt hour
  • 0.23901 calorie (nutritional)
  • 0.94782 Btu
  • 0.27778 watt hour

Frequently Asked Questions

How much is 1000 Joules in calories (thermochemical)?

1000 Joules equals 239.01 calories (thermochemical). This is calculated by multiplying 1000 by the conversion factor 0.239006.

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

1000 Joules (239.01 calories (thermochemical)) is less than 1 food Calorie (1 kcal = 4,184 J) — comparable to the energy in a pinch of sugar.

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

Multiply 1000 by the conversion factor 0.239006. The calculation is 1000 × 0.239006 = 239.01 calories (thermochemical). This factor is defined by international measurement standards.

Share This Calculation

1000 Joules = 239.006 calories (thermochemical)
1000 Joules = 239.006 calories (thermochemical) — conversion chart

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