Enter a value in foot-candles to calculate the corresponding amount in lux. The result updates from the published unit relationship and includes a reverse check so a misplaced factor is easier to spot.
People compare foot-candles with lux in lighting surveys, fixture planning, code documentation, and international specifications.
The foot-candles to lux result preserves the same illuminance quantity while changing its label from fc to lx.
The numerical bridge from fc to lx is 10.76391041671. Multiply foot-candles by 10.76391041671 to obtain lux.
To audit foot-candles to lux in the other direction, Divide lux by 10.76391041671 to return to foot-candles.
Enter 50 fc. The result is 538.195520836 lx, following 50 × 10.76391041671 = 538.195520836.
The three reference cases below keep the foot-candles to lux factor unchanged while the source magnitude varies.
Keep additional lx digits when lux will enter another calculation; round after that work is complete.
The precision of foot-candles still limits the defensible precision of lux. Extra decimals cannot improve the original fc measurement.
The broad illuminance converter can take foot-candles to lux into a wider unit list. A nearby unit pair is lux to phot.
One fc corresponds to 10.763910417 lx; compare the result with that benchmark.
Reversing 538.195520836 lx should return about 50 fc.
Use fc only for foot-candles and lx only for lux. The foot-candles to lux scale is 10.76391041671.
Illuminance measures luminous flux arriving per unit area and depends on the surface being considered. The foot-candles to lux definition is limited to foot-candles and lux; a similarly named measure requires its own stated rule. A bare number cannot show which side of foot-candles to lux it belongs to. Keep fc or lx attached whenever the value is copied.
Keep the unrounded lx value when lux enters a total or formula. Store the source fc amount beside it, and rerun foot-candles to lux if foot-candles changes.
One fc maps to 10.763910417 lx. Reversing the foot-candles to lux scale associates one lx with 0.09290304 fc.
Place lx above fc in a dimensional-analysis fraction so the source symbol cancels. An inverted fraction would answer the opposite conversion.
In lighting surveys, fixture planning, code documentation, and international specifications, copying the source as a bare number can hide whether it began in fc. Keep the foot-candles label visible until foot-candles to lux is complete.
When several lux values are combined, convert every source to lx first. Mixing fc and lx in one total would make the arithmetic meaningless even if each individual number looked reasonable.
Multiply foot-candles by 10.76391041671 to obtain lux. Divide lux by 10.76391041671 to return to foot-candles.
Reverse the displayed lux amount with the inverse foot-candles to lux rule. It should reproduce the entered foot-candles within the shown precision.
Yes. Zero fc maps to zero lx because foot-candles to lux has no zero-point offset.