How many cal is 50 J?
50 J = 11.95 cal
It is 11.95 cal, so saying 12 cal is fine — rounding is within 0.5%.
And how many J is 50 cal?
50 cal = 209.2 J
Formula: cal = J × 0.239006
J to cal around this value
5 J1.195cal
10 J2.39cal
15 J3.585cal
20 J4.78cal
25 J5.975cal
30 J7.17cal
35 J8.365cal
40 J9.56cal
45 J10.755cal
50 J11.95cal
55 J13.145cal
60 J14.34cal
65 J15.535cal
70 J16.73cal
75 J17.925cal
80 J19.12cal
85 J20.315cal
90 J21.511cal
95 J22.706cal
100 J23.901cal