Voltage drop calculation for low voltage DC systems
This tool is designed for 12V, 24V or 48V DC systems.
Quickly calculate voltage drop based on cable length, power and wire gauge.
Results in red indicate an excessive drop (> 1.5V) and thus an undersized cable.
RESULTS
Total power: 0 W
Minimum PSU size: 0 W
| Wire cross section (mm²) ? | Voltage drop (V) ? |
|---|
Power supply tip: Always choose a PSU with higher power than the calculated load — a 25–30% safety margin is recommended for reliability and lifespan.
Disclaimer: This tool is indicative only and valid for constant-voltage DC systems (12V / 24V / 48V DC). It doesn't account for temperature, connector quality, or technical regulations. For final installation, always consult a qualified electrician.
