Your health numbers, explained clearly.
101 free calculators and wellness trackers for body measurements, nutrition, activity, fitness, periods, pregnancy and sleep. Fast, source-aware and built to keep sensitive inputs out of analytics.
- Body & weight
- Calories & macros
- Steps & walking
- Fitness & cardio
- Cycle tools
- Pregnancy dates
- Sleep planning
- Private trackers
Seven focused tool families
20 tools →
◐Nutrition & EnergyCalories, metabolism, macros, hydration and dietary-reference calculators with transparent assumptions.24 tools →
↟Steps & WalkingStep counting, distance, stride, walking pace, time and calorie estimates.13 tools →
♥Fitness & CardioExercise calories, running pace, race estimates, heart-rate zones, VO₂ max and strength tools.16 tools →
◌Period & FertilityPrivate cycle tracking and date estimates with clear uncertainty and no contraception claims.11 tools →
◔PregnancyDue dates, gestational age, pregnancy timeline, IVF dating and reference weight-gain ranges.10 tools →
☾Sleep & RecoveryBedtime, wake-up time, duration, approximate sleep-cycle planning, sleep debt and naps.7 tools →
Start with the questions people ask most
Calculate adult BMI from height and weight, show the CDC adult category, and explain why BMI is a screening measure rather than a diagnosis.
Open tool →◐TDEE CalculatorEstimate total daily energy expenditure from BMR and a clearly described activity multiplier.
Open tool →◐Calorie CalculatorEstimate adult BMR and maintenance calories from age, sex, height, weight and activity level using a named formula and transparent activity multipliers.
Open tool →↟Live Step CounterCount steps during an active browser session using motion permission when supported, with a manual fallback and no background-counting claim.
Open tool →◌Period CalculatorEstimate the next period date from recent cycle lengths or the last start date, showing uncertainty rather than a single guaranteed date.
Open tool →◔Due Date CalculatorEstimate due date from LMP, cycle length, conception or IVF-related timing and explain the ultrasound-dating caveat.
Open tool →☾Sleep CalculatorPlan a sleep window from desired bedtime/wake time and duration, with optional approximate cycle visualization.
Open tool →◐Macro CalculatorConvert daily calories and macro percentages into protein, carbohydrate and fat grams with sum validation.
Open tool →