# Boat Units — Unit Conversion byCaptainMJ

> Unit Conversion byCaptainMJ (iPhone/iPad app by Marcus Johansson.)

- Source: https://appshunter.io/ios/app/boat-units/id1659201229 (this page in markdown: same URL + `.md`)
- Developer: [Marcus Johansson](https://appshunter.io/developer/1659201231)
- Category: Utilities, Navigation
- Price: Free
- Age rating: 4+
- Requires: iOS 18.6 · 7 MB
- Languages: English
- Released: 2022-12-13
- Data updated: 2026-07-05
- User reviews in markdown: https://appshunter.io/ios/app/boat-units/id1659201229/reviews.md

## What is Boat Units?

Boat Units gives sailors quick, reliable access to the conversions they use every day — from speed and distance to electrical, environmental, and onboard measurements. Designed for cruising sailors who want fast answers without digging through menus.
Whether you’re checking wind speed, converting nautical miles, or working out electrical loads, everything is laid out for quick reference on the water.

FEATURES
Conversions tailored for sailors and yacht owners
Nautical, environmental, electrical, length, and distance units
Clean, simple interface built for quick use underway
No ads, no clutter, no unnecessary categories

DEVELOPMENT
Boat Units is under active development, with new conversions and improvements planned. Feedback from sailors is always welcome and helps shape future releases.


## Version history (last 5 releases)

### 1.4 — 2026-07-02

- Bug fixes and precision improvements

### 1.2 — 2026-06-15

- Major UI modernisation
- Bug fixes and stability improvements

### 1.04 — 2023-12-05

- Added Voltage drop calculation
- Minor fixes

### 1.03.4 — 2022-12-29

- Added two new units to Pressure category (atm and mmHg).

### 1.03.3 — 2022-12-26

- Added Area and Torque conversions
- Added AWG Wire Size, Wind Speed and Radio Waves conversion tables
- UI improvements

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## More apps by Marcus Johansson

- [Ship's Log byCaptainMJ](https://appshunter.io/ios/app/ships-log-bycaptainmj/id1659218013)
- [TOCFL Flashcards](https://appshunter.io/ios/app/tocfl-flashcards/id6777674491)

All apps by Marcus Johansson: https://appshunter.io/developer/1659201231

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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 2026-07-05.*