BMI, calorie, body fat, water intake, sleep, pregnancy & workout calculators — track your wellness privately.
Calorie Calculator
Daily calorie needs using Mifflin-St Jeor — for loss, maintenance and gain.
Body Fat Calculator
U.S. Navy body fat formula from circumference measurements.
Blood Pressure Checker
Classify your BP reading using American Heart Association categories.
Ideal Weight Calculator
Four classic formulas — Devine, Hamwi, Robinson, Miller — plus frame adjustment.
Water Intake Calculator
Daily water needs from weight, activity, climate and special states.
Macro Calculator
Protein, carbs and fat targets from your daily calories.
Daily Protein Calculator
Protein target in g/kg/day by activity, age and goal.
Steps to Calories Calculator
Estimate calories burned from your daily step count.
Exercise Calorie Burn
Calories burned for 15+ activities using METs.
Calorie Deficit Calculator
Plan a safe daily deficit to hit your weight loss goal on time.
Heart Rate Zones
Five training zones via Karvonen or % of max HR.
1RM Calculator
Estimate your one-rep max using 7 formulas + training percentages.
Running Pace Calculator
Pace per km/mile and speed from distance and finish time.
Sleep Calculator
Bedtimes or wake-up times aligned with 90-minute sleep cycles.
Sleep Cycle Calculator
Live wake-up windows from your current bedtime.
Vitamin D Calculator
Estimate vitamin D production from sun exposure.
Alcohol Calories Calculator
Calories and units across 10 common drink types.
Pregnancy Due Date Calculator
Estimated due date via Naegele's rule or IVF/ultrasound.
Pregnancy Weight Gain Calculator
IOM-recommended weight gain by BMI category and gestational age.
Menstrual Cycle Calculator
Next 6 periods, ovulation dates and fertile windows.
Workout Plan Generator
Personalized plan by goal, level and weekly frequency.
Age in Days Calculator
Your exact age in days, weeks, months and hours.
Age Difference Calculator
Exact gap in years, months, days and total days.
VO₂max Calculator
Aerobic capacity from Cooper 12-min run or resting HR.
Waist-to-Hip Ratio Calculator
Abdominal fat distribution and cardiovascular risk.
Lean Body Mass Calculator
LBM from Boer, James or Hume formulas.
Resting Heart Rate Checker
RHR fitness rating with reference ranges by age.
A Body Shape Index (ABSI)
Mortality risk from waist, BMI and height — independent of BMI.
Hydration Status Checker
Match urine color to a 6-shade hydration chart.
HRV Calculator
RMSSD, SDNN and pNN50 from RR intervals.