All tools (34)

Browse the complete EasyHealth index — every tool, A to Z.

11 tools

1RM Calculator

Estimate your one-rep max using 7 formulas + training percentages.

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A5 tools
Most popular tools

Age Calculator

Your exact age in years, months & days — plus a birthday countdown.

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Alcohol Calories Calculator

Calories and units across 10 common drink types.

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Age in Days Calculator

Your exact age in days, weeks, months and hours.

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Age Difference Calculator

Exact gap in years, months, days and total days.

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A Body Shape Index (ABSI)

Mortality risk from waist, BMI and height — independent of BMI.

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B4 tools

BMI Calculator

Body Mass Index with metric or imperial units & category color coding.

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Most popular tools

BMR & TDEE Calculator

Daily calorie needs for maintenance, loss and gain — Mifflin-St Jeor.

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Body Fat Calculator

U.S. Navy body fat formula from circumference measurements.

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Blood Pressure Checker

Classify your BP reading using American Heart Association categories.

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C2 tools
Most popular tools

Calorie Calculator

Daily calorie needs using Mifflin-St Jeor — for loss, maintenance and gain.

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Calorie Deficit Calculator

Plan a safe daily deficit to hit your weight loss goal on time.

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D1 tools

Daily Protein Calculator

Protein target in g/kg/day by activity, age and goal.

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E1 tools

Exercise Calorie Burn

Calories burned for 15+ activities using METs.

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H3 tools

Heart Rate Zones

Five training zones via Karvonen or % of max HR.

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Hydration Status Checker

Match urine color to a 6-shade hydration chart.

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HRV Calculator

RMSSD, SDNN and pNN50 from RR intervals.

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I1 tools

Ideal Weight Calculator

Four classic formulas — Devine, Hamwi, Robinson, Miller — plus frame adjustment.

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L1 tools

Lean Body Mass Calculator

LBM from Boer, James or Hume formulas.

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M2 tools

Macro Calculator

Protein, carbs and fat targets from your daily calories.

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Menstrual Cycle Calculator

Next 6 periods, ovulation dates and fertile windows.

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O1 tools

Ovulation Calculator

Estimate your fertile window, ovulation date, next period & due date.

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P2 tools

Pregnancy Due Date Calculator

Estimated due date via Naegele's rule or IVF/ultrasound.

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Pregnancy Weight Gain Calculator

IOM-recommended weight gain by BMI category and gestational age.

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R2 tools

Running Pace Calculator

Pace per km/mile and speed from distance and finish time.

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Resting Heart Rate Checker

RHR fitness rating with reference ranges by age.

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S3 tools

Steps to Calories Calculator

Estimate calories burned from your daily step count.

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Sleep Calculator

Bedtimes or wake-up times aligned with 90-minute sleep cycles.

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Sleep Cycle Calculator

Live wake-up windows from your current bedtime.

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V2 tools

Vitamin D Calculator

Estimate vitamin D production from sun exposure.

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VO₂max Calculator

Aerobic capacity from Cooper 12-min run or resting HR.

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W3 tools

Water Intake Calculator

Daily water needs from weight, activity, climate and special states.

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Workout Plan Generator

Personalized plan by goal, level and weekly frequency.

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Waist-to-Hip Ratio Calculator

Abdominal fat distribution and cardiovascular risk.

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