How much power does an LED bulb consume when it uses a percentage less energy than a traditional bulb?
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An LED bulb uses % less energy than an old-school bulb. If the old bulb used W...
How many watts does the LED use?
Type of calculation: Calculating the value after a percentage
decrease.
How to use the calculator:
Option 1 (Direct way): Use the Decreased Value CALCULATOR ("Calculate new value after percentage decrease"). Enter the old bulb's watts 60 W [Original] and the percentage saved 80% [Decrease]. It will show you the LED's wattage directly.
Option 2 (Step-by-step):
Step 1: Calculate the energy savings. Use the Basic Percentage CALCULATOR ("What is X% of Y?"). Enter the percentage saved as 80 [X] and the old bulb's watts as 60 [Y]. It will calculate 80% of 60 W.
Step 2: Subtract those savings from the old bulb's wattage.
The formula:
We want to find the LED wattage, which is 80% less than the 60 W used by the old bulb.
Savings = 80% of 60 W
Savings = (80 / 100) × 60 W = 0.8 × 60 W = 48 W
LED watts = Old bulb watts - Savings
LED watts = 60 W - 48 W = 12 W
How to use the calculator:
Option 1 (Direct way): Use the Decreased Value CALCULATOR ("Calculate new value after percentage decrease"). Enter the old bulb's watts 60 W [Original] and the percentage saved 80% [Decrease]. It will show you the LED's wattage directly.
Option 2 (Step-by-step):
Step 1: Calculate the energy savings. Use the Basic Percentage CALCULATOR ("What is X% of Y?"). Enter the percentage saved as 80 [X] and the old bulb's watts as 60 [Y]. It will calculate 80% of 60 W.
Step 2: Subtract those savings from the old bulb's wattage.
The formula:
We want to find the LED wattage, which is 80% less than the 60 W used by the old bulb.
Savings = 80% of 60 W
Savings = (80 / 100) × 60 W = 0.8 × 60 W = 48 W
LED watts = Old bulb watts - Savings
LED watts = 60 W - 48 W = 12 W
Answer: The LED bulb consumes watts.