Training Calculators
Precision tools from a hybrid athlete & engineer. The same algorithms I use for my own marathon, Ironman, and HYROX preparation.
The same calculations I use for my own marathon, Ironman, and HYROX preparation. Find a calculator or browse by category below.
Browse by Category
222 calculators across 10 categories
Nutrition
Fuel strategies engineered for endurance athletes. TDEE, macros, and sport-specific nutrition.
General Fitness
VO2max, fitness tests, calorie burn, and general training tools.
Running
The same pace algorithms I use for my own marathon preparation. Race predictors, training zones, and more.
Strength
Strength benchmarks built for hybrid athletes. 1RM, standards, and progressive overload tools.
Cycling
Power and efficiency tools from a competitive triathlete. FTP, gear ratios, and cycling performance.
Heart Rate & Zones
Personalized zone calculators for training by heart rate, power, or pace.
Recovery
TSS, training load, and recovery tracking calculators.
Triathlon
Multi-sport planning from an Ironman finisher. Race estimators, transition tools, and pacing.
Swimming
Swim performance tools from an open water triathlete. CSS, pace, and pool training.
HYROX
Station-by-station analysis from a competitive HYROX athlete. Pace, splits, and event planning.
Ported from My Own Training System
These calculators are ported from the training analysis system I built for my own marathon and Ironman preparation. They use the same algorithms used by professional coaches and sports scientists.
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