500J是多少cal？
500J = 119.503cal
是119.503cal，所以说成120cal也没问题——四舍五入的误差在0.5%以内。
反过来，500cal是多少J？
500cal = 2,092J
计算公式: cal = J × 0.239006
该数值前后的 J → cal
50 J11.95cal
100 J23.901cal
150 J35.851cal
200 J47.801cal
250 J59.751cal
300 J71.702cal
350 J83.652cal
400 J95.602cal
450 J107.553cal
500 J119.503cal
550 J131.453cal
600 J143.403cal
650 J155.354cal
700 J167.304cal
750 J179.254cal
800 J191.205cal
850 J203.155cal
900 J215.105cal
950 J227.055cal
1,000 J239.006cal