The best bike gear calculator is here!
Calculate gear ratios, check compatibility, and optimize your bike setup. Completely free to use, no email required!
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Gear Calculator
Compare components and see exact performance impacts
Tire Pressure
Get perfect tire pressure for your weight and terrain
Ask Riley
Get personalized advice from your AI bike expert
Why CrankSmith?
Real Component Data
Access accurate specifications and compatibility data for thousands of bike components. No more guesswork or outdated information.
Smart Analysis
Get personalized recommendations based on your riding style, terrain, and goals. Make informed decisions about your setup.
Save Money
Avoid costly mistakes by understanding component compatibility before you buy. Get the right parts the first time.
Ask Riley - AI Expert
Get instant answers to your technical questions with Riley, your AI bike expert trained on thousands of maintenance manuals. No more conflicting advice from forums.
Get the Full CrankSmith Experience
Download our mobile app for offline access, faster performance, and a native app experience
Mobile App
Optimized for mobile devices with touch-friendly interface and gesture controls
Offline Access
Works without internet connection - perfect for bike shops and trailside calculations
Lightning Fast
Instant calculations and smooth animations for the best user experience
Download CrankSmith
Get the complete bike gear calculator experience on your device
Free • No ads • Privacy focused
Works on iOS, Android & Desktop
What Cyclists Say
"Finally, a gear calculator that actually works offline!"
- Mountain Biker
"The mobile app is so much faster than the website"
- Road Cyclist
"Perfect for bike shop consultations"
- Bike Mechanic