LED Lumen Calculator
Enter LED chip count, watts per chip, and efficacy to get total lumens — or convert between lux, lumens, and area.
Typical: 80–120 lm/W budget, 130–200 lm/W premium
Enter values and click Calculate
Result
Total Watts
Chips
Efficacy
Room Lighting Estimator
Required lumens range:
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Summary
Enter LED chip count, watts per chip, and efficacy to get total lumens — or convert between lux, lumens, and area.
How it works
- Select the calculator mode: LED output, lux-to-lumens, or lumens-to-lux.
- Enter the required values (chip count, watts per chip, efficacy, or area).
- Click Calculate to see the result with a brief explanation.
- Use the room estimator to check whether your lumens target meets recommended lux levels.
Use cases
- Estimate total lumen output when designing a custom LED array or grow light.
- Convert a lux specification on a data sheet to total lumens for a known room area.
- Check whether a planned lighting setup meets recommended lux levels for an office or kitchen.
- Compare LED strips by efficacy (lm/W) to choose the most efficient option for a budget.
Frequently Asked Questions
Last updated: 2026-07-23 ·
Reviewed by Nham Vu