Useful things.
A human touch.
HandyShelf helps with the numbers that turn up in everyday fitness.
The publisher
HandyShelf publishes this collection of browser-based fitness calculators. Our focus is useful tools, clear methods, and honest limits.
Start with something useful.
Estimate energy, calculate running pace, compare strength estimates, or work out adult BMI. Every tool has a clear purpose, a method, and room for context.
Your input stays here.
No account. Calculations run in your browser. You can explicitly save completed runs, food diary days, or manual step totals on this device. The calculator does not upload those records.
Honest about the limits.
HandyShelf is a general-purpose calculator publisher, not a clinical service. We link to methods and do not claim clinical review. Read our methodology.