Gear Ratio Speed Calc
Shanghai Sheyuan Network Technology Co., Ltd. Utilities iPhoneiPadiPod touch
Gear Ratio Speed Calc is a paid Utilities app for iPhone and iPad by Shanghai Sheyuan Network Technology Co., Ltd. Requires iOS 17.0. Updated June 28, 2026.
- Price
- 4.99 USD
- on the App Store
- Size
- 1 MB
- Age 4+
- Updated
- Jun 28
- 2026 · v1.0.2
Screenshots
About Gear Ratio Speed Calc
Designing a gear train and need to know the final output RPM and torque multiplier for single, dual, or triple stage setups? Enter driver and driven teeth counts, set your input RPM, and get instant results. Includes 8 common gear presets for fast selection on the shop floor. FEATURES: - Single, dual, and triple stage gear ratio calculations - Calculate overall gear ratio, output RPM, and torque multiplier - 8 common gear presets for quick selection - Custom driver and driven teeth input for any gear combination - Supports any input RPM value - Clean, dark-themed interface for shop and field use FORMULAS: - Gear Ratio = Driven Teeth / Driver Teeth - Output RPM = Input RPM / Overall Gear Ratio - Torque Multiplier = Overall Gear Ratio - Multi-stage: Overall Ratio = Stage 1 x Stage 2 x Stage 3 PRESETS INCLUDED: 12/48 (4:1), 15/45 (3:1), 18/36 (2:1), 20/40 (2:1), 16/64 (4:1), 24/72 (3:1), 20/60 (3:1), 14/56 (4:1) Perfect for designing gear trains, verifying speed reductions, and calculating torque multiplication in mechanical power transmission systems.
What’s new
Version 1.0.2 · Updated June 28, 2026
Added a More Pro Tools section to discover related field calculators.
App privacy
The developer, Shanghai Sheyuan Network Technology Co., Ltd., reported these privacy practices to Apple.
Data Not Collected
The developer does not collect any data from this app.
Alternatives to Gear Ratio Speed Calc
Looking for apps like Gear Ratio Speed Calc? Here are 6 similar apps on the App Store. The highest rated is ISM-WF200 (5.0/5), and 5 of the 6 are free to download.
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Gear Ratio Calculator RPM
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Gear Formula: Calc & Simulator
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GearCalc Pro
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ExSkate
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Pimax - official app
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ISM-WF200
5.0
| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Gear Ratio Speed Calc | – | 4.99 USD | June 28, 2026 | |
| Gear Ratio Calculator RPM | – | 3.99 USD | Jul 15, 2026 | Compare |
| Gear Formula: Calc & Simulator | – | Free | Jul 13, 2026 | Compare |
| GearCalc Pro | – | Free | Aug 20, 2026 | Compare |
| ExSkate | 1.7 / 5 (10) | Free | Sep 6, 2024 | Compare |
| Pimax - official app | – | Free | Mar 30, 2026 | Compare |
| ISM-WF200 | 5.0 / 5 (9) | Free | Nov 25, 2025 | Compare |