Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Electrical
Wire Ampacity Calculator
Find the safe current-carrying capacity of a copper or aluminum wire based on AWG size, ambient temperature, and number of bundled conductors. Essential for NEC-compliant circuit design.
Fill in the required fields to see your result.
Electrical
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.
Fill in the required fields to see your result.
Key differences
| Wire Ampacity Calculator | LED Resistor Calculator | |
|---|---|---|
| Category | Electrical | Electrical |
| Inputs required | 3 | 3 |
| Result | Wire Ampacity (A) | Resistor Value (Ξ©) |
| What it does | Find the safe current-carrying capacity of a copper or aluminum wire based on AWG size, ambient temperature, and number of bundled conductors. Essential for NEC-compliant circuit design. | 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. |