Lighting
LED Array Configuration Calculator
Calculate total LEDs from LEDs in series and parallel strings. The default values illustrate the workflow; replace them with measurements or ratings from one documented condition.
Inputs for this calculation
Enter ratings or measurements that describe one scenario.
How the result is calculated
For this worksheet, the governing relationship is total = series × parallel. The entered quantities are LEDs in series and Parallel strings.
Using the loaded examples gives 48.00 LEDs. Your saved case should identify where each entry came from.
Calculate total LEDs from LEDs in series and parallel strings. A connected part of the work can be checked with LED Driver Current Calculator.
How to use the result
The primary answer, Total LEDs, describes only the entered scenario. Compare it with illuminance, uniformity, driver loading, voltage loss, energy use, and maintained output.
Keep the input set beside the output so another reader can reproduce it.
Values this page needs
Keep lumens, candela, lux, and foot-candles on the correct geometric basis. A source note beside each entry makes the result reproducible.
At least one field has a positive lower bound because it appears in a denominator. Check every prefix before entry; micro, milli, kilo, and mega are not interchangeable.
- LEDs in series
- Default example: 8. Enter LEDs in series.
- Parallel strings
- Default example: 6. Enter parallel strings.
What the formula leaves out
Current sharing between strings needs control.
The simple equation may need adjustment for fixture distribution, reflections, mounting, maintenance, and meter position. Resolve material omissions before selecting a standard size or rating.
Keep lumens, candela, lux, and foot-candles on the correct geometric basis.
Keep a reproducible record
Save LEDs in series and parallel strings with total LEDs. Add the date and any unit conversion.
Pass total LEDs without rounding when it becomes another input. Do not round between dependent calculations.
Common questions before using the result
Should intermediate values be rounded?
Retain the raw result for comparison and create a separately rounded reporting value if needed.
Is zero a valid placeholder?
Leave the case unfinished until the real value is known rather than entering a placeholder zero.
How should I prepare the LED Array Configuration inputs?
Choose entries that describe the same case. Keep lumens, candela, lux, and foot-candles on the correct geometric basis.
Where is this total LEDs estimate simplified?
Current sharing between strings needs control. Also consider fixture distribution, reflections, mounting, maintenance, and meter position.
Why might a second instrument give another answer?
First confirm that the measurements match the equation. Then review daylight variation, control behavior, depreciation, and spatial uniformity.