Compare calculators

Both calculators run independently — change the inputs on either side to compare results.

LED Savings Calculator

Find out exactly how much money you save each year by replacing incandescent or CFL bulbs with LEDs. Enter wattages, daily usage, and your electricity rate to get an annual dollar figure.

Old Bulb Wattage (watts)

LED Bulb Wattage (watts)

Daily Usage Hours (hours)

Electricity Rate ($/kWh)

Fill in the required fields to see your result.

Electrical Home

UPS Runtime Calculator

Estimate how many minutes a UPS (uninterruptible power supply) will keep your equipment running on battery backup, based on battery capacity, connected load, and UPS efficiency. Use it when sizing a UPS for a server, computer workstation, or network equipment.

Connected Load (watts)

Battery Capacity

Power Factor

UPS Efficiency

Fill in the required fields to see your result.

Key differences

	LED Savings Calculator	UPS Runtime Calculator
Category	Electrical Home	Electrical Home
Inputs required	4	4
Result	Annual Savings ($)	Runtime (minutes)
What it does	Find out exactly how much money you save each year by replacing incandescent or CFL bulbs with LEDs. Enter wattages, daily usage, and your electricity rate to get an annual dollar figure.	Estimate how many minutes a UPS (uninterruptible power supply) will keep your equipment running on battery backup, based on battery capacity, connected load, and UPS efficiency. Use it when sizing a UPS for a server, computer workstation, or network equipment.