Convert calorie to joule

1 cal = 4.184 J

1 cal = 4.18 J
1 cal in every energy unit
joule4.18 J
kilojoule0.00418 kJ
megajoule0.00000418 MJ
calorie1 cal
kilocalorie0.001 kcal
watt-hour0.00116 Wh
kilowatt-hour0.00000116 kWh
British thermal unit0.00397 BTU
foot-pound3.09 ft⋅lb
electron volt2.61e+19 eV
kiloelectron volt2.61e+16 keV
megaelectron volt26,100,000,000,000 MeV
How the conversion works

Multiply by 4.184 to go from calorie to joule, or divide by it to go back. Every conversion on this site routes through the SI value (J) rather than a table of pairwise factors, so a round-trip returns exactly what you started with.

Going the other way? joule to calorie — 1 J = 0.2390057361 cal.

calorie to joule — common values
1 cal4.184 J
2 cal8.368 J
3 cal12.552 J
5 cal20.92 J
10 cal41.84 J
15 cal62.76 J
20 cal83.68 J
25 cal104.6 J
50 cal209.2 J
75 cal313.8 J
100 cal418.4 J
250 cal1,046 J
500 cal2,092 J
1000 cal4,184 J