Skip to content
UUTOOLS.NET

Theme

Colours

Joules to Calories Converter

1 J = 0.2390057361 cal. Type any value to convert joules to calories.

1 J = 0.2390057361 cal

Formula: cal = J × 0.2390057361

Common values
Decimals
In every unit 12 units
Joule (J) 1 J
Kilojoule (kJ) 0.001 kJ
Megajoule (MJ) 0.000001 MJ
Calorie (cal) 0.2390057361 cal
Kilocalorie (kcal) 0.0002390057361 kcal
Watt-hour (Wh) 0.0002777777778 Wh
Kilowatt-hour (kWh) 2.777777778 × 10⁻⁷ kWh
Electronvolt (eV) 6.241509074 × 10¹⁸ eV
British thermal unit (BTU) 0.0009478171203 BTU
Therm (thm) 9.48043428 × 10⁻⁹ thm
Foot-pound (ft·lbf) 0.7375621493 ft·lbf
Erg (erg) 10,000,000 erg

Convert on our server?

If you continue, the file is uploaded over an encrypted connection and converted on our server. You can keep using the site meanwhile. The original is deleted as soon as it is converted; the result is kept for 6 hours so you can download it, and you can delete it at any time. Files are never shared or used for anything else.

Calculated in your browser – nothing you type is sent anywhere. Privacy details

Joules to calories table

Formula: cal = J × 0.2390057361

Joule (J)Calorie (cal)
0.1 J0.02390057361 cal
0.25 J0.05975143403 cal
0.5 J0.1195028681 cal
1 J0.2390057361 cal
2 J0.4780114723 cal
3 J0.7170172084 cal
4 J0.9560229446 cal
5 J1.195028681 cal
6 J1.434034417 cal
7 J1.673040153 cal
8 J1.912045889 cal
9 J2.151051625 cal
10 J2.390057361 cal
12 J2.868068834 cal
15 J3.585086042 cal
20 J4.780114723 cal
25 J5.975143403 cal
30 J7.170172084 cal
40 J9.560229446 cal
50 J11.95028681 cal
60 J14.34034417 cal
75 J17.92543021 cal
100 J23.90057361 cal
150 J35.85086042 cal
200 J47.80114723 cal
250 J59.75143403 cal
500 J119.5028681 cal
1,000 J239.0057361 cal

How to use: Joules to Calories

  1. 1 Type the value in joules.
  2. 2 The result in calories appears at once – or type in the calories field to convert back.
  3. 3 Pick a common value, round to fewer decimals or swap the units with one click.
  4. 4 Copy the result, or open “In every unit” to see the value in all units of energy.

About this tool

Joule (J) is a unit of energy (SI). Calorie (cal) is a unit of energy; 1 cal = 4.184 J.

To convert joules to calories, multiply the value by 0.2390057361 (cal = J × 0.2390057361). Example: 100 J = 23.90057361 cal.

Calculated in your browser – nothing you type is sent anywhere.

Frequently asked questions

How do I convert joules to calories?

To convert joules to calories, multiply the value by 0.2390057361: cal = J × 0.2390057361. For example 100 J = 23.90057361 cal.

What is 1 J in calories?

1 J = 0.2390057361 cal. The other way round, 1 cal = 4.184 J.

How exact is the result?

The converter uses the official definitions of both units and shows up to 10 significant digits; choose 0–6 decimals to round. Both units are defined exactly in terms of each other, so the factor itself is exact.

Can I convert other units of energy here?

Yes – choose any of the 12 units of energy in the From and To lists, or switch to another measurement at the top.

Related tools