LED Savings Calculator
Calculate the yearly savings from switching bulbs to LED. This free online home, garden & energy calculator runs entirely in your browser — no signup, no data sent anywhere.
Inputs
Results
How It Works (Formula & Method)
The saving per bulb is the wattage difference × hours per day × 365 ÷ 1,000, times your electricity rate. Multiply by the number of bulbs for the total. LEDs also last far longer, cutting replacement costs on top of the energy savings shown here.
Worked Example
Below is a worked example using the calculator's default values. The same numbers are pre-filled in the form above so you can press Calculate and see the result without typing anything.
Inputs used:
- Old Bulb Wattage (W): 60
- LED Wattage (W): 9
- Hours per Day: 5
- Electricity Rate ($/kWh): 0.15
- Number of Bulbs: 10
With these inputs, the calculator computes the metrics shown in the Results panel. Change any value and press Calculate again to see how the result responds — the live widget and the chart both update instantly.
Frequently Asked Questions
What does the LED Savings Calculator compute?
The LED Savings Calculator takes 5 input values and returns 2 results. Calculate the annual electricity savings from switching incandescent or halogen bulbs to LEDs, across any number of bulbs.
Is my data sent to a server?
No. The LED Savings Calculator runs entirely in your browser using static JavaScript. Your inputs are never transmitted to CalculatorHive or any third party, and nothing is stored after you close the page.
Is this calculator free to use?
Yes. Every calculator on CalculatorHive is completely free. There is no signup, no paywall, and no usage limit. The site is supported by display advertising and affiliate partnerships, which are clearly labeled.
How accurate is the result?
The math is mathematically exact for the inputs you provide. Real-world accuracy depends on how accurately your inputs reflect the real situation — defaults are typical values, not guarantees.