WireSizer - DC Wire Gauge & Voltage Drop Calculator
WireSizer™ is the original DC wire gauge and voltage drop calculator app for iOS and Android, trusted since 2012.
Set voltage, current, and circuit length with a flick of your finger. No keyboard or Internet connection is needed. You get the correct AWG, SAE, or Metric wire size, checked against ampacity limits, meeting ABYC E-11 specifications.
Learn How WireSizer Works
Our guide walks you through calculating and understanding Voltage Drop.
Read the WireSizer Guide →Wire Sizing Made Simple
Quick, accurate wire sizing for boats, RVs, trucks, cars, radios, solar, and other DC low-voltage systems. Built for professionals and DIYers alike.
WireSizer Specs & Features
- Voltage up to 60 VDC
- Current up to 500 amps
- Total circuit length up to 600 feet or 200 meters
- Voltage Drop from 1 to 20 percent
- AWG wire from 4/0 through 18 gauge
- SAE wire from 4/0 through 18 gauge
- Metric wire from 0.75 mm² through 95 mm²
- Derating for engine compartments and other high-temperature environments
- Derating for sheathed, bundled, or conduit-run wire
- Wire insulation ratings from 60°C to 200°C
- Optional display of fractional Amps or Watts
- Built-in Materials List to record your wire selections (not yet available for Android)
Using properly sized wire is important! Undersized wire can lead to equipment malfunction, or even fire. Oversized wire will add to cost and can be harder to work with. And unlike "online" wire gauge calculators, WireSizer will work wherever or whenever you need it.
WireSizer calculation results meet ABYC E-11 specifications, the marine standard and a practical guideline for other DC systems, when standard wiring practices are followed. ABYC specifications meet or exceed NEC requirements where applicable and correspond to ISO standards.
Not for use with AC circuits.
Ad free, and will cost less than the wire scraps you throw away at the end of the day.
What Others Say
WireSizer has been independently reviewed by Cruising World and i-MarineApps, and demonstrated in the "Intro to WireSizer" video on YouTube.
Reviewed content was unsolicited and is not associated with Juggernaut Technology, Inc.
Questions or feedback? Email info@WireSizer.com.
Copyright 2012 - Juggernaut Technology, Inc. All Rights Reserved.
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