LED Savings Calculator
Calculate how much money you can save by switching to LED light bulbs
Compare LED vs Traditional Bulbs
LED Bulb
Typical range: 15,000-40,000 hours
Regular Bulb
Usage & Energy Price
Check your electricity bill
Average hours on per day
Comparison period
Cost Comparison & Savings
LED Bulb Total Cost
Incandescent Total Cost
Savings Analysis
Efficiency Comparison
LED Energy Efficiency: 83% more efficient
LED Lifetime: 15.0x longer than incandescent
Annual Energy Use: LED: 11.0 kWh vs Incandescent: 65.7 kWh
Example: LED vs Incandescent Comparison
LED Bulb Calculation
Specifications: $2.00, 10W, 15,000 hours lifetime
Usage: 3 hours/day, $0.12/kWh
Annual hours: 3 × 365.25 = 1,095.75 hours
Bulbs needed (1 year): ceil(1,095.75 ÷ 15,000) = 1 bulb
Electricity cost: (10W ÷ 1,000) × 1,095.75 hrs × $0.12 = $1.32
Total cost: $2.00 + $1.32 = $3.32
Incandescent Bulb Calculation
Specifications: $0.50, 60W, 1,000 hours lifetime
Bulbs needed (1 year): ceil(1,095.75 ÷ 1,000) = 2 bulbs
Bulb cost: $0.50 × 2 = $1.00
Electricity cost: (60W ÷ 1,000) × 1,095.75 hrs × $0.12 = $7.89
Total cost: $1.00 + $7.89 = $8.89
Savings Summary
Annual savings: $8.89 - $3.32 = $5.57
Break-even: ($3.32 ÷ $8.89) × 12 = 4.5 months
5-year savings: LED: $8.57 vs Incandescent: $42.45 = $33.88 saved
LED Quick Facts
LEDs use 83% less energy than incandescent bulbs
Last 15-40 times longer than incandescent bulbs
Run much cooler, reducing air conditioning costs
Environmentally friendly with lower carbon footprint
Instant full brightness, no warm-up time
Bulb Type Comparison
Incandescent
Power: 60W | Life: 1,000 hrs
Efficiency: 5% light, 95% heat
Halogen
Power: 45W | Life: 2,000 hrs
Better than incandescent, still hot
CFL
Power: 15W | Life: 8,000 hrs
Good efficiency, contains mercury
LED
Power: 10W | Life: 15,000+ hrs
Highest efficiency, no mercury
Money-Saving Tips
Replace most-used bulbs first for maximum savings
Look for utility company rebates on LED bulbs
Buy LEDs in bulk for better unit prices
Choose dimmable LEDs for more light control
Consider smart LEDs for automated energy savings
Understanding LED Light Bulb Savings
Cost Calculation Formula
Total Cost = Bulb Cost + Electricity Cost
Bulb Cost = Price × ceil(Total Hours ÷ Lifetime)
Electricity Cost = (Power ÷ 1000) × Hours × Energy Price
- •ceil(): Rounds up to calculate number of bulbs needed
- •Power ÷ 1000: Converts watts to kilowatts
- •365.25: Average days per year (including leap years)
Why LEDs Save Money
- •Lower electricity costs: Use 80-90% less energy
- •Fewer replacements: Last 15-40x longer
- •Less heat: Reduced cooling costs in summer
- •No maintenance: Less time and effort replacing bulbs
- •Quality light: Better color rendering and control
Tip: Even though LEDs cost more upfront, most people break even within 3-6 months and save hundreds of dollars over the bulb's lifetime.
Environmental Impact
Energy Reduction
Switching to LEDs can reduce lighting energy use by 75%, significantly lowering your carbon footprint.
Waste Reduction
LEDs last so long that you'll throw away far fewer burnt-out bulbs over their lifetime.
No Mercury
Unlike CFLs, LEDs contain no mercury or other hazardous materials that require special disposal.