6 Free Tools
Sports & Training Calculators
Practical, browser-based helpers for pacing, gearing, grade conversion, and endurance-race planning.
Cycling Gear & Cadence
Compare speed and gear inches across a cassette.
Cycling Watts per Kg
Compute W/kg and estimate climbing speed from power.
Climbing Grade Converter
Approximate YDS, French, and UIAA equivalents.
Rowing Split & Pace
Project finish time and pace from a 500 m split.
Triathlon Race-Time Planner
Combine swim, bike, run, and transition estimates.
Swim Send-Off
Set a repeat interval from pace, rest, and repeats.