This tool simplifies complex pulley calculations for engineers, mechanics, students, and DIY enthusiasts. It helps determine mechanical advantage, effort force, and other key values for various pulley systems and drive types.






214+ iOS apps curated and reviewed
Pulley & Belt calculator is the household name in pulley and belt calculator, but it's far from the only option. We track 214+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | $1.99 | 1.3★ (3) | No | No | May 2026 | ||
| 2 | $0.99 | 4.6★ (16) | No | No | Sep 2026 | ||
| 3 | $1.99 | — | No | No | Aug 2026 | ||
| 4 | Free | 4.7★ (61K) | No | No | Sep 2026 | ||
| 5 | Free | 4.9★ (409K) | Yes | No | Sep 2026 | ||
| 6 | Free | 4.9★ (34K) | Yes | Yes | Sep 2026 | ||
| 7 | Free | 4.7★ (25K) | No | Yes | Sep 2026 | ||
| 8 | Free | 4.7★ (1.7M) | Yes | Yes | Sep 2026 |






This tool simplifies complex pulley calculations for engineers, mechanics, students, and DIY enthusiasts. It helps determine mechanical advantage, effort force, and other key values for various pulley systems and drive types.




Calculate key parameters for a two-pulley system. Input pulley sizes, speed, power, and distance to determine belt velocity, tension, torques, wrap angle, and driven pulley RPM. Supports both imperial and metric units.





