About this app
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.
Latest release
What’s New
Added a More Pro Tools section to discover related field calculators.
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Oct 2, 2026 · 7:51 PM $4.99
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