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Led Savings Calculator
Yearly saving after swapping bulbs.
Open interactive calculatorHow to use
Compares wattage and life.
Formula
Δcost = (Wold−Wnew)×h×365/1000 × rate
FAQ
Is this Led Savings calculator accurate?
The formula and assumptions are shown on the page, and the engine is covered by audit tests. Results are for reference — not financial or medical advice.
Do I need an account?
No. Calculations run in your browser. Recents can stay on this device.
What inputs do I need?
Compares wattage and life.
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