Home & Electrical

LED Savings Calculator: How Much You Save by Switching to LED Bulbs and Tubes

Free tool · Updated October 3, 2026 · By CouponTalk

Your result

Enter your measurements to see your result.

Quick answer

Savings = (old watts − LED watts) × hours a day × 365 ÷ 1,000 × your rate per unit. Replacing six 36 W fluorescent tubes with 20 W LED battens, used 8 hours a day at ₹8 a unit, saves about 280 units, or ₹2,240 a year. Swapping 60 W incandescent bulbs for 9 W LEDs saves even more, so LEDs usually pay for themselves within a year.

How to use this calculator

Enter how many lights you are replacing and their wattage.
Enter the LED wattage and daily hours.
Add your rate per unit and LED price for payback.

LED equivalents

LED equivalents and savings per light
Old light	LED replacement	Saving a year (6 h/day, ₹8/unit)
60 W bulb	9 W LED bulb	₹894
40 W bulb	6 W LED bulb	₹596
15 W CFL	9 W LED bulb	₹105
36 W tube light	20 W LED batten	₹280

Savings depend on your tariff slab and actual hours.

Frequently asked questions

What LED replaces a 60 W bulb?

About 8–10 W gives similar light (around 800 lumens).

Do LEDs last longer?

Yes, typically 15,000–25,000 hours compared with about 1,000 for incandescent bulbs.

Does the BEE star rating apply to LEDs?

Look for a reputable brand with a good lumens-per-watt figure on the pack.

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