LED Watt Calculator Germany
Find which LED replaces your old bulb: LED wattage, lumens and a conversion table, plus yearly and 10-year savings based on your electricity price in Germany.
LED Equivalent (Watt)
8 watts
700 - 850 lumens
Annual Savings
€19.93
56.9 kWh less
Savings / 10 years
€199.29
Incandescent bulb
60 W
LED
8 W
Savings
87%
| Incandescent (W) | LED (W) | Lumens | Savings |
|---|---|---|---|
| 15 W | 2 W | 120 - 150 | 87% |
| 25 W | 3 W | 200 - 300 | 88% |
| 40 W | 5 W | 400 - 500 | 88% |
| 60 W | 8 W | 700 - 850 | 87% |
| 75 W | 11 W | 900 - 1100 | 85% |
| 100 W | 14 W | 1300 - 1500 | 86% |
| 125 W | 18 W | 1600 - 1900 | 86% |
| 150 W | 22 W | 2000 - 2500 | 85% |
Note: These calculations are for informational purposes only and do not replace professional tax or financial advice. All information without guarantee.
FAQ
Frequently Asked Questions
How do I convert old watt values to LED watt?
Divide the old incandescent watt value by approximately 8-10 to get the equivalent LED wattage. A 60W incandescent bulb is replaced by a 6-8W LED with the same brightness (about 800 lumens).
What is the difference between watts and lumens?
Watts measure energy consumption, lumens measure actual brightness. For LED shopping, focus on lumens: 400 lm for accent lighting, 800 lm for general room lighting, 1,500+ lm for bright task areas.
How much do I save per year by replacing an incandescent bulb with an LED?
The calculator multiplies the power saved by the daily burning time, 365 days, the number of lamps and the electricity price. With the defaults (a 60 W incandescent bulb replaced by an 8 W LED, 3 hours a day, 35 ct/kWh) you save 52 W or about 87%, which is 56.94 kWh and 19.93 euros per lamp per year. The 10-year saving shown (199.29 euros) is simply ten times that; changes in electricity prices and the purchase price of the LED are not taken into account.
Guide
What is the LED Watt Calculator Germany?
The LED watt calculator helps when switching from conventional bulbs to LEDs. It shows the equivalent LED wattage and the annual cost saving.
How does the LED Watt Calculator Germany work?
Enter the wattage of your current bulb. The calculator determines the equivalent LED wattage (approx. 1/7 of the bulb wattage) and computes the annual electricity saving at typical usage.
Key Data and Facts
Conversion: 60 W bulb approx. 8 W LED. 100 W approx. 14 W LED. LED lifespan: 15,000-50,000 hours. Saving: approx. 85% compared to incandescent bulbs.
Step-by-Step Guide
How to find the right LED bulb step by step: 1. Read off the wattage of the previous incandescent bulb: e.g. 40 W, 60 W, 75 W or 100 W. 2. Determine the LED equivalent: the conversion is based on the luminous flux (lumens). Incandescent bulb 25 W ≈ LED 3 W (230 lm). 40 W ≈ 5 W (470 lm). 60 W ≈ 8 W (800 lm). 75 W ≈ 11 W (1,050 lm). 100 W ≈ 14 W (1,520 lm). 3. Choose the colour temperature: warm white (2,700 K) for living rooms, neutral white (4,000 K) for the kitchen/bathroom, daylight white (6,500 K) for workspaces. 4. Calculate the savings: electricity savings = (old watts - LED watts) x burning hours/year / 1,000 x electricity price. 5. Payback: LED bulbs cost approx. 3-10 EUR, and the savings often offset the purchase price within a few months. The lifespan of an LED is 15,000-50,000 hours compared with approx. 1,000 hours for an incandescent bulb.
Calculation Example
Replacing a 60 W incandescent bulb with an 8 W LED, 1,000 burning hours/year: savings = (60 - 8) x 1,000 / 1,000 x 0.37 = 19.24 EUR/year per lamp.
Sources
Official sources
Calculations are based on applicable German laws and official data:
- Bundesministerium für Wirtschaft und Klimaschutz
- Bundesamt für Wirtschaft und Ausfuhrkontrolle (BAFA)
Full methodology at Methodology.
Reviewed by Konstantin Iakovlev · Last updated:
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