Candela ↔ throw distance
This uses the ANSI FL1 throw definition, where useful throw ends at 0.25 lux. That means throw distance in meters is √(candela / 0.25), which simplifies to 2 × √candela.
Peak beam intensity.
ANSI FL1 distance to 0.25 lux.
Formula from candela10,000 cd → 200 m
Formula from meters200 m → 10,000 cd
Reverse formula: candela = (meters ÷ 2)².
Rounded display values are just for readability; the converter uses the full parsed number internally.