Example:
15 cal(th)/s·cm² = 627599.999999 J/s·m²
1 cal(th)/s·cm² = 41840 J/s·m² | 1 J/s·m² = 0.000024 cal(th)/s·cm²
Conversion Steps:
15 × (41839.999999942 / 1) = 627599.99999913