Calculate essential dimensions for spur gears and pinions using diametral pitch or module. This tool provides outside diameter, center distance, and ratio for specific gear types.
Spur Gear Calculator by SpiralArm Consulting Limited




250+ iOS apps curated and reviewed
With an average user rating of 4.1★, the spur gear calculator category is one of the App Store's strongest. Browse all 250+ apps we track, sorted so the most loved ones surface first.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | Free | 3.7★ (3) | No | No | May 2026 | ||
| 2 | Free | 5.0★ (1) | No | Yes | May 2026 | ||
| 3 | Free | — | Yes | Yes | Jul 2026 | ||
| 4 | Free | 4.7★ (61K) | No | No | Sep 2026 | ||
| 5 | Free | — | No | No | May 2026 | ||
| 6 | Free | — | No | No | May 2026 | ||
| 7 | Free | 2.5★ (2) | No | No | May 2026 | ||
| 8 | $2.99 | 3.6★ (5) | No | No | Sep 2026 |




Calculate essential dimensions for spur gears and pinions using diametral pitch or module. This tool provides outside diameter, center distance, and ratio for specific gear types.


This professional mechanical design tool helps engineers and enthusiasts calculate and optimize various gear parameters. It offers accurate calculations for different gear types, custom parameter input, and real-time design previews.





