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Thirty-one free calculators for runners, cyclists, swimmers and triathletes. No login needed.

Pace and timing · 9

VDOT, training paces, converters and pacing strategy.

VDOT

VDOT calculator + race time predictions

Ritmos Daniels

Daniels training paces (E/M/T/I/R)

Easy pace desde VDOT

Real easy pace from VDOT (Daniels 65-78%)

Ritmo objetivo

Target pace for goal time

Ritmo medio + consistencia

Average pace + consistency from splits

Tabla de tiempos de paso

Race split table by km

Conversor ritmo km↔mi

Pace converter (km/mile) + race times

Negative split planner

Negative split race pacing strategy

Galloway run-walk

Galloway run-walk intervals for long races

HR zones, effort and load · 9

HR zones, max HR, TSS, recovery and training effect.

Zonas FC/Ritmo/Potencia

Training zones (HR/pace/power)

Zonas FC (Karvonen)

Karvonen heart-rate zones (HR reserve)

FCmax estimada

Max HR estimation (4 formulas)

MAF 180 (Maffetone)

Maffetone 180 maximum aerobic HR

TSS por sesión

Training Stress Score (4 methods)

RPE a TSS (Foster)

TSS estimate from RPE + duration (Foster sRPE)

Días de recuperación

Recovery days from a hard session

Recuperación TSB

TSB recovery — when will you be fresh again

Training Effect (Firstbeat)

Aerobic + anaerobic Training Effect (Firstbeat)

Trail, altitude and climate · 6

Vert pacing, altitude, heat and cadence.

Corrección altitud

Altitude correction for race times

Pace vertical KM

Vertical km pace estimator (Minetti model + VAM)

Pacing en trail (D+/D-)

Trail pacing with elevation gain/loss

Cadencia objetivo

Optimal running cadence (spm)

Corrección temperatura/humedad

Pace correction by heat & humidity

Aclimatación al calor

Heat acclimation days before hot race

Nutrition, body and cycling · 7

Calories, weight, sweat rate, carb load and W/kg.

Calorías de carrera

Calorie estimate (MET + elevation)

IMC (atlético)

BMI with athletic interpretation

Peso de carrera

Race weight (sustainable race-day weight)

Tasa de sudoración personal

Personal sweat rate (L/h)

Plan nutricional de carrera

Race fueling — carbs, sodium and fluid per hour

Carga de glucógeno

Pre-race carb-loading plan

Watts por kilo (ciclismo)

W/kg ratio + Coggan level + climbing VAM

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