Marathon Finish Time from Training Pace Calculator
Predicts marathon finish time from average training pace per kilometre or mile. Outputs total time in hours and minutes...
Pace, power, and performance math for every sport.
Running, cycling, swimming, and gym math — from race pace and splits to power-to-weight and training-load calculations.
Predicts marathon finish time from average training pace per kilometre or mile. Outputs total time in hours and minutes...
Calculates vertical jump height from hang time (or vice versa) using kinematics, plus the average power output during th...
Estimates the mechanical running power output in watts from body mass, running speed, grade, and air density (drag appro...
Calculates calories burned running using MET-based formula. MET ≈ 0.1 × speed(m/min) + 3.5 (ACSM walking/running equatio...
Calculates swimming pace per 100 metres from total distance and time. Outputs pace in seconds per 100 m and equivalent m...
Calculates a volleyball player's spiking height and compares it to standard net height from standing reach and vertical...
Predicts finish time for a target race distance from a known race result: t₂ = t₁ × (d₂/d₁)^1.06. Commonly used to predi...
Estimates total triathlon finish time from swim pace, bike speed, run pace, and transition times for any distance (sprin...
Estimates average lower-body power from a standing broad (long) jump using distance and body mass via the Johnson & Baha...
Calculates minimum and optimal daily protein intake for hypertrophy (1.6–2.2 g/kg/day). Shows total grams, calories from...
Estimates the percentage of 1-rep maximum using the Brzycki formula: % 1RM = 100 / (1.0278 − 0.0278 × reps). Useful when...
Calculates NBA True Shooting Percentage (TS%), an efficiency metric that accounts for field goals, three-pointers, and f...
Estimates one-repetition maximum (1RM) for the deadlift (or any barbell lift) using the Epley formula from a submaximal...
Calculates the effective average pace and total distance for a run–walk workout: average_speed = (run_distance + walk_di...
Converts total rowing time and distance into split pace per 500 m, and estimates power output from split pace using the...
Estimates VO₂max from the 1-mile run test: VO₂max = 100.5 + 8.344×Sex − 0.1636×Weight − 1.438×Time − 0.1928×HR (George 1...
Estimates hockey puck speed from shot power, stick flex efficiency, and player strength, using simplified energy transfe...
Estimates the shuttle speed after a badminton smash from racket head speed and typical energy transfer coefficient.
Calculates the Wilks score to compare powerlifting totals across different body weights using the standard Wilks coeffic...
Estimates lactate threshold heart rate (LTHR) as 85–92% of HRmax. Calculates heart rate zones: Z1 recovery, Z2 aerobic,...
Estimates FTP from a 20-minute maximal effort test: FTP = 0.95 × avg 20-min power. Also computes training zones based on...
Calculates energy expenditure: kJ = power(W) × duration(s) / 1000. At ~22% efficiency, kcal ≈ kJ × (1/4.184) / 0.22 = kJ...
Calculates running age-grade performance percentage to compare times fairly across age groups using WMA age-grading fact...
Calculates Bill James's basic Runs Created (RC) statistic, which estimates the number of runs a batter contributes. Usef...