# DC Power Cable Size Calc — DC Power System Cable Size

> Calculates DC power cable size based on voltage drop and current. (iPhone/iPad app by Nitrio.)

- Source: https://appshunter.io/ios/app/dc-power-cable-size-calc/id1439670635 (this page in markdown: same URL + `.md`)
- Developer: [Nitrio](https://appshunter.io/developer/321121189)
- Category: Utilities, Productivity
- Price: $2.99
- Rating: 2.70/5 from 3 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 9 MB
- Languages: American English
- Released: 2018-11-18
- Data updated: 2026-08-24
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/dc-power-cable-size-calc/id1439670635/reviews.md

## What is DC Power Cable Size Calc?

DC Power Cable Size Calculator are electrical calculator to find approximate wire gauge/size based on the length of the wire, the voltage and the current (in amps).

Features:
- Instant calculation
- Result are copy able to other app
- Formula are include as reference
- Support various unit for each input

Cable sizes are important for low voltage battery cables, wind turbines, solar panels and load cables.

Common reasons for low voltage (12v, 24v or 48v) system faults are voltage drops through incorrectly sized cables. It can be very dangerous If the cable is too small, as the cable will heat up and potentially cause a fire. On contrast an oversized cables might cause energy or money waste.

Formula:
VDI = (Amps x Distance)/(%Volt Drop x Voltage)

VDI - Voltage Drop Index (a reference number based on resistance of wire)
Distance - One way wiring distance in feet
%Volt Drop = acceptable voltage drop 

Cable Size by cross-sectional area [Cooper]
mm² = VDI x 1.1 

The voltage drop value will vary depending on your application. The standard 2% are use to ensure delivering full potential to any needed electrical source. And 5% or more voltage drop is more common in automotive applications. 

Safety Guide:
- Cable sizes should only be used as a guideline and all figures should be checked against the manufacturers data sheet. 
- Cables should be fused / current protected to their max rating or less.

Thanks for your support and do visit nitrio.com for more apps for your iOS devices.

## Key features

- Instant wire gauge calculation
- Copyable results
- Includes reference formulas
- Supports various input units
- Guideline for low voltage systems

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/dc-power-cable-size-calc/id1439670635/reviews.md

### 1/5 — Crashed und Wert passen m.E. nicht.

*2024-01-14, version 1.1*

App crashed ständig beim ändern der Werte in den Drop-Downs und die berechneten Werte stimmen m.E. nicht.

### 2/5 — Something wrong, can’t trust it

*2021-09-07*

If I enter: 24v, 120a, 1m 
I expect the app to recommend cable that can handle the 120a load, Regardless of the acceptable loss percentage. NOT 10awg/6mm2 MAX 30A 😲

### 1/5 — Crashs allways :-(

*2020-12-26, version 1.1*

Stürzt ab beim ändern des % wertes :-( Teures vergnügen.

## Frequently asked questions about DC Power Cable Size Calc

### What is DC Power Cable Size Calc used for?

DC Power Cable Size Calc is an electrical calculator designed to determine the approximate wire gauge or size needed for DC power systems. It considers factors like wire length, voltage, and current to prevent issues like voltage drops and overheating.

### How much does DC Power Cable Size Calc cost?

DC Power Cable Size Calc is a paid application, priced at $2.99. This one-time purchase grants you access to its features for calculating DC power cable sizes.

### What devices does DC Power Cable Size Calc support?

DC Power Cable Size Calc is available for iOS devices, including iPhone, iPad, and iPod. It is designed to run on these platforms.

### What is the age rating for DC Power Cable Size Calc?

The app has an age rating of 4+, making it suitable for a wide range of users. This rating indicates it contains no mature content.

### How often is DC Power Cable Size Calc updated?

The latest version of DC Power Cable Size Calc is 1.2, which was last updated on January 3, 2026. This indicates a recent update, suggesting ongoing support and potential improvements.

### Does DC Power Cable Size Calc have ads?

No, DC Power Cable Size Calc does not contain advertisements. As a paid application, it offers an ad-free experience for its users.

### What is the user rating for DC Power Cable Size Calc?

DC Power Cable Size Calc has a user rating of 2.7 stars, based on 3 ratings. This feedback suggests that while some users find it useful, there may be areas for improvement.

### What is the formula used by DC Power Cable Size Calc?

The app utilizes formulas such as VDI = (Amps x Distance)/(%Volt Drop x Voltage) and mm² = VDI x 1.1 for its calculations. These formulas help estimate the required cable size based on electrical parameters.

## Version history (last 3 releases)

### 1.2 — 2026-01-03

- Updated for the newest devices.
- Minor bugs fixed.

### 1.1 — 2020-09-30

- Update for Newest Devices.
- Bug Fixed.

### 1.0 — 2018-11-17

No release notes.

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All apps by Nitrio: https://appshunter.io/developer/321121189

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-24.*