Voltage Drop Calculator

Check if your wire is thick enough — too thin and you lose power as heat.

System Voltage *

Wire Gauge (AWG) *

AWG = wire thickness. Lower number = thicker wire.

One-Way Wire Length (meters) *

Measure from source to load — not round-trip.

Current (Amps) *

Design Your Own System

Load Calculator

Find out how much power your appliances use.

Solar Panel Sizing

Calculate how many panels you need.

Battery Runtime

See how long your battery lasts.

Wire Size

Find the minimum gauge for your load and length.

Voltage Drop

Check voltage loss across your wire runs.

Breaker / Fuse

Get the right breaker size for any circuit.