Performance Athletic Analytics Engine
Calibrate workout thresholds, map run split intervals, look up functional threshold power (FTP) cycling levels, and figure out maximum muscular output.
Accurate Results
Engineered for precision
Developer Friendly
JSON, API & more
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No tracking, no ads
Species-Specific Drug Dosing
Calculate animal weight-based dosages, target mg requirements, and liquid volumes across different species: dogs, cats, horses, cattle, and rabbits.
Royal jelly production — nurse bee count ↔ grams per day
Calculate potential royal jelly production based on young nurse bee count and queen cell graft rates.
Watch case size — mm diameter ↔ lug width
Analyze watch case diameter proportions, lug-to-lug spans, and find the corresponding standard strap lug-width sizes.
Scale factor (model size ↔ real world)
Convert dimensions between model design sizes and physical real-world scale targets, including imperial/metric conversions.
USCS Soil Classification Solver
Classify soil type under the Unified Soil Classification System (USCS) using sieve analysis and Atterberg limits.
SPORTS Utilities
Choose a specialized option to begin instant real-time conversion.
VO2 Max & Aerobic Capacity Estimator
Convert running race times or heart rates into VO2 Max estimates and aerobic fitness classifications.
Pace, Speed & Time Converter
Convert between different running paces and speeds (min/km, min/mile, km/h, mph) and predict race times.
Cycling FTP & Power Zone Calculator
Calculate personalized cycling power training zones (Coggan 7-zone model) based on your Functional Threshold Power (FTP) in watts.
Swimming Pace & Yardage Converter
Convert swim splits and paces between per-100m, per-100 yards, and overall distances with custom pool sizes.
One Rep Max (1RM) Calculator
Estimate your single repetition maximum lifting capacity (1RM) using major clinical lifting models (Epley, Brzycki, Lander).