As we know One lm/(ft²·sr) is equal to 10.763910417 cd/m² (1 lm/(ft²·sr) = 10.763910417 cd/m²).

To convert Lumen/Square Foot/Steradian to Candela/Square Meter, multiply your lm/(ft²·sr) figure by 10.763910417.

Example : convert 25 lm/(ft²·sr) to cd/m²:

25 lm/(ft²·sr) = 25 × 10.763910417 cd/m² = cd/m²

To convert Candela/Square Meter to Lumen/Square Foot/Steradian, divide your cd/m² figure by 10.763910417.

Example : convert 25 cd/m² to lm/(ft²·sr):

25 cd/m² = 25 ÷ 10.763910417 lm/(ft²·sr) = lm/(ft²·sr)