Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Electrical
Ohm's Law Calculator
Solves for voltage, current, or resistance in a resistive circuit using V = I × R. Essential for electronics hobbyists, electricians, and students designing or troubleshooting DC and AC circuits.
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
| Ohm's Law Calculator | LED Resistor Calculator | |
|---|---|---|
| Category | Electrical | Electrical |
| Inputs required | 2 | 3 |
| Result | Resistance (Ω) | Resistor Value (Ω) |
| What it does | Solves for voltage, current, or resistance in a resistive circuit using V = I × R. Essential for electronics hobbyists, electricians, and students designing or troubleshooting DC and AC circuits. | 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. |