Joule to Calorie (IT) Converter

Energy Converter

27 units available

Decimals:

From

To

0.238846

1 J = 0.238846 cal (IT)

Formula:

cal (IT) = J × 0.2388458966

With your value: 1 J = 0.2388459 cal (IT)

How big is that?

Everyday references on a logarithmic scale, all expressed in joule so you can sanity-check the result.

Heartbeat (1.0× your value)1.00 J

Your value1.00 J

AA battery charge (1.0e+4× your value)1.00e+4 J

Slice of bread (2.8e+5× your value)2.80e+5 J

Daily food intake (8.4e+6× your value)8.40e+6 J

Litre of petrol (3.4e+7× your value)3.42e+7 J

Other Joule to Calorie (IT) conversions

2 J to cal (IT)3 J to cal (IT)4 J to cal (IT)5 J to cal (IT)6 J to cal (IT)7 J to cal (IT)8 J to cal (IT)

Joule to Calorie (IT) Conversion Table

Joule (J)	Calorie (IT) (cal (IT))
0.5	0.119423
1	0.238846
2	0.477692
5	1.194229
10	2.388459
15	3.582688
20	4.776918
25	5.971147
50	11.942295
100	23.88459
250	59.711474
500	119.422948
1000	238.845897

Calorie (IT) to Joule Conversion Table

Calorie (IT) (cal (IT))	Joule (J)
0.5	2.0934
1	4.1868
2	8.3736
5	20.934
10	41.868
15	62.802
20	83.736
25	104.67
50	209.34
100	418.68
250	1,046.7
500	2,093.4
1000	4,186.8

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Joule (J)

Energy

Exact conversion

Derived from the joule (1 J = 1 kg·m²/s²). Thermochemical and IT calories, BTU and kWh are exact defined multiples.

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

Calorie (IT) (cal (IT))

Energy

Exact conversion

Derived from the joule (1 J = 1 kg·m²/s²). Thermochemical and IT calories, BTU and kWh are exact defined multiples.

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

How to Convert Joule to Calorie (IT)

To convert from Joule (J) to Calorie (IT) (cal (IT)), multiply the value by 0.2388458966.

Formula: cal (IT) = J × 0.2388458966

Reverse: J = cal (IT) × 4.1868

Step-by-Step Example

Start with your value in Joule. For example: 5 J
Multiply by the conversion factor: 5 x 0.2388458966
The result is: 1.194229 cal (IT)

About Joule

The joule is the SI unit of energy. One joule equals the work done when a force of one newton moves an object one meter.

Common uses: physics, electrical engineering, chemistry.

About Calorie (IT)

The calorie (it) (cal (IT)) is a unit of energy and work. One calorie (it) equals 4.1868 joules. UnitConvertLab converts it against every other energy unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: energy calculations, engineering and science, education.

Frequently Asked Questions

How many Calorie (IT) are in 1 Joule?

There are exactly 0.2388458966 Calorie (IT) in 1 Joule. This means the conversion factor from Joule to Calorie (IT) is 0.2388458966.

What is the formula to convert Joule to Calorie (IT)?

The formula to convert Joule to Calorie (IT) is: cal (IT) = J × 0.2388458966. For example, to convert 10 Joule to Calorie (IT), you would multiply 10 by 0.2388458966.

What is a Joule?