LED Conversion Savings Calculator vs LED Resistor Calculator
Two calculators for the same neighbourhood of questions. Here is what each measures, what you feed in, and where you'd reach for one over the other.
LED Conversion Savings Calculator
Calculate the annual electricity cost savings and CO₂ reduction you'll achieve by swapping incandescent or CFL bulbs for LEDs. Use it to justify the upfront cost of an LED retrofit.
- Answers
- Annual Savings ($)
- Inputs
- Current Bulb Wattage, Number of Bulbs, Daily Usage Hours, Electricity Rate, LED Efficiency Ratio
LED Resistor Calculator
Calculate the exact current-limiting resistor value needed to safely power an LED from any supply voltage. Use this whenever wiring LEDs to avoid burning them out from excess current.
- Answers
- Resistor Value (Ω)
- Inputs
- Supply Voltage, LED Forward Voltage, LED Current
At a glance
| LED Conversion Savings Calculator | LED Resistor Calculator | |
|---|---|---|
| Category | Electrical Home | Electrical |
| Answers | Annual Savings | Resistor Value |
| Inputs | 5 | 3 |
| Result unit | $ | Ω |
When to use each
Calculate the annual electricity cost savings and CO₂ reduction you'll achieve by swapping incandescent or CFL bulbs for LEDs. Use it to justify the upfront cost of an LED retrofit.
Calculate the exact current-limiting resistor value needed to safely power an LED from any supply voltage. Use this whenever wiring LEDs to avoid burning them out from excess current.