Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Electrical
Wire Size Calculator
Find the minimum wire cross-sectional area in circular mils needed to keep voltage drop within code limits for any DC or single-phase AC circuit. Use this when wiring long runs to panels, subpanels, motors, or outdoor equipment.
Fill in the required fields to see your result.
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.
Key differences
| Wire Size Calculator | Ohm's Law Calculator | |
|---|---|---|
| Category | Electrical | Electrical |
| Inputs required | 4 | 2 |
| Result | Required Wire Size (AWG) | Resistance (Ω) |
| What it does | Find the minimum wire cross-sectional area in circular mils needed to keep voltage drop within code limits for any DC or single-phase AC circuit. Use this when wiring long runs to panels, subpanels, motors, or outdoor equipment. | 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. |