Medical & Health Tools
BMI, BMR, body fat, pregnancy, ideal weight and dosage calculators built to WHO, NHS, CDC and international standards.
BMI CalculatorPopular
Calculate your Body Mass Index with WHO categories in metric or imperial units.
BMR Calculator
Estimate your Basal Metabolic Rate using the Mifflin-St Jeor equation.
Daily Calorie (TDEE)Popular
Find your daily calorie needs (TDEE) based on activity level.
Body Fat Percentage
Estimate body fat using the U.S. Navy method.
Ideal Weight Calculator
Find your ideal body weight (Robinson, Devine, Hamwi).
Waist-to-Hip Ratio
Assess health risk with your waist-to-hip ratio (WHO).
Waist-to-Height Ratio
Check central obesity risk with waist-to-height ratio.
Pregnancy Due DatePopular
Estimate your due date and current pregnancy week.
Ovulation Calculator
Predict your fertile window and ovulation days.
Daily Water Intake
Calculate how much water you should drink each day.
Target Heart Rate Zones
Find your training heart-rate zones from age and resting HR.
Max Heart Rate
Estimate maximum heart rate (Tanaka & 220-age).
Blood Pressure Category
Classify blood pressure readings by AHA/NHS categories.
Body Surface Area
Calculate BSA (Mosteller, Du Bois) for dosing.
Pregnancy Weight Gain
Recommended pregnancy weight gain by pre-pregnancy BMI.
Calories Burned
Estimate calories burned by activity using METs.
Macro Calculator
Split your calories into protein, carbs and fat macros.
A1C ↔ Average Glucose
Convert HbA1c to estimated average glucose and back.
eGFR Calculator
Estimate kidney function (eGFR) with the CKD-EPI equation.
Child Height Predictor
Predict adult height from parents' heights (mid-parental).
Free Medical & Health Tools that just work
Toolinza offers 20 free medical & health tools that run entirely in your browser. There is no signup, no watermark and no limit — and because everything is processed locally, your data never leaves your device. Whether you are a professional, a student or just need something done quickly, these tools deliver accurate, standards-based results in seconds.