# The Voltage Drop Calc — Voltage Drop Calulator & Tools

> Voltage Drop Calulator & Tools (iPhone/iPad app by 1BIGRIG Ltd.)

- Source: https://appshunter.io/ios/app/the-voltage-drop-calc/id6756492539 (this page in markdown: same URL + `.md`)
- Developer: [1BIGRIG Ltd](https://appshunter.io/developer/1792073283)
- Category: Reference
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.6 · 6 MB
- Languages: American English
- Released: 2025-12-16
- Data updated: 2026-08-13
- User reviews in markdown: https://appshunter.io/ios/app/the-voltage-drop-calc/id6756492539/reviews.md

## What is The Voltage Drop Calc?

Voltage Drop Calculator

A simple, practical voltage drop calculator for electricians and engineers.

Quickly calculate voltage drop, cable size, and load voltage for single-phase and three-phase systems. Designed to be easy to use on site, with advanced tools available for professionals.

Free Features
• Basic voltage drop calculation
• Single-phase and three-phase systems
• Copper or aluminium conductors
• Adjustable cable length and load current
• Power factor support
• Clear voltage drop and percentage results

Pro Features

• UK BS 7671 (18th Edition) voltage drop calculations
• mV/A/m tables for common cable types
• Cable size finder to meet % voltage drop limits
• Advanced calculation options
• Ad-free experience

Built for Electricians

Whether you’re checking a quick voltage drop or designing a circuit to standards, this app keeps calculations fast, clear, and reliable.

Notes

Voltage drop results are intended as guidance. Always verify final designs against current wiring regulations and manufacturer data.

Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| GoPro Monthly | $4.99 | per month |
| GoPro Yearly | $24.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove Ads | $24.99 | one-time |



## Version history (last 3 releases)

### 1.1.1 — 2026-03-29

Bug fixes and UI updates

### 1.1 — 2025-12-18

Small bug fixes

### 1.0 — 2025-12-16

No release notes.

## More apps by 1BIGRIG Ltd

- [SE ToolBox](https://appshunter.io/ios/app/se-toolbox/id6741111166)
- [TECH ToolBox](https://appshunter.io/ios/app/tech-toolbox/id6741366999)
- [CALC ToolBox](https://appshunter.io/ios/app/calc-toolbox/id6741718195)
- [BLT ToolBox](https://appshunter.io/ios/app/blt-toolbox/id6741779517)
- [LX ToolBox](https://appshunter.io/ios/app/lx-toolbox/id6742348161)
- [The Ohms Law Calc](https://appshunter.io/ios/app/the-ohms-law-calc/id6747296194)

All apps by 1BIGRIG Ltd: https://appshunter.io/developer/1792073283

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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 2026-08-13.*