Health ToolsetHealth & Fitness
Calculators for body composition, nutrition, training, pregnancy dates and heart-rate zones.
Blood Type Calculator (Parent to Child)
Pick both parents' ABO group and Rh factor to see which blood types their child could have, with Punnett squares and estimated odds.
Body Fat Calculator - Free Online Tool
Calculate your body fat percentage using the U.S. Navy method and BMI-based formulas. Get accurate estimates with measurements for men and women.
Calorie Deficit Calculator
Calculate your calorie deficit with our free online tool. Get accurate results instantly. No signup required.
Chinese Gender Chart from Due Date (Lunar Age Predictor)
A Chinese gender calendar and gender predictor for when you know your due date and birthday but not the day you conceived. It backs out the conception month, works out your lunar age, reads the traditional chart, flags borderline results, and explains why the chart is only about 50% accurate.
Daily Macro Nutrient Calculator
Calculate your daily macronutrient requirements based on your goals and activity level.
Daily Water Intake Calculator
Calculate your recommended daily water intake based on age, weight, and activity level.
Due Date Calculator - Free Online Tool
Calculate your pregnancy due date using LMP, conception date, IVF transfer, or ultrasound. See trimester milestones and important dates.
Fitness Goal Reality Checker
Paste fitness goals and your routine, and an AI model in your browser flags goals that compete for time or recovery. Private. Not medical advice.
Food Label Photo Summary Preview
Checks a nutrition label photo's file type and size in your browser. It does not read the label values. No AI model runs; nothing is uploaded.
Heart Rate Zone Calculator
Calculate target exercise heart rate zones from age, resting heart rate, optional measured max heart rate, and training method.
Heart Rate Zone Note Parser
Paste workout notes and an AI model in your browser pulls out each heart rate figure and effort as written. Free, private. Not medical advice.
HR Zone Calculator
Calculate your heart rate training zones for optimal fitness.
Hydration Habit Note Analyzer
Paste notes on what you drank and an AI model in your browser lists drinks, timing and patterns to track. Free, private. Not medical advice.
Ideal Weight Calculator - Free Online Tool
Find your ideal body weight using 5 proven formulas: Devine, Robinson, Miller, Hamwi, and BMI range. Compare results based on height and gender.
Implantation Calculator
Estimate when a fertilized egg would implant, from your last period or a known ovulation date, plus the earliest and most reliable pregnancy test days.
Life Expectancy Calculator
Look up average remaining years of life and the chance of reaching 70, 80, 90 and 100 for your age and sex, from the Social Security Administration's period life table.
Macros Calculator
Calculate your daily macronutrient needs for optimal health.
Meal Log Pattern Classifier
Paste a meal log and an AI model in your browser lists meals and times and labels the pattern. No calorie counts. Private. Not medical advice.
Medication Routine Note Cleaner
Turn medication notes into a clean list with names and doses as written, plus items to confirm. AI model runs in your browser. Not medical advice.
One Rep Max Calculator
Calculate your 1RM using Brzycki, Epley, Lander, Lombardi, and O'Conner formulas. Get a training load table with percentages.
Period Calculator (Next Period & Cycle Length)
Predict your next periods and estimated ovulation for up to 12 cycles, and work out your average cycle length from past start dates.
Protein Calculator - Free Online Tool
Calculate your daily protein needs based on body weight and fitness goals. Get recommendations for muscle gain, weight loss, and athletic performance.
Running Pace Calculator - Free Online Tool
Calculate your running pace with our free online tool. Get accurate results instantly. No signup required.
Sleep Journal Signal Checker
Paste a sleep journal and an AI model in your browser lists bed and wake times, habits and patterns that show up together. Private. Not medical advice.
Symptom Note Organizer
Organize symptom notes into timing, triggers and changes to bring to a clinician. AI model runs in your browser, nothing is uploaded. Not medical advice.
Target Heart Rate Calculator
Calculate your target heart rate for optimal fitness training.
Wellness Plan Gap Checker
Compare your wellness plan to a checklist: a text model in your browser matches items by meaning and lists the gaps. Private. Not medical advice.
Workout Note Intensity Labeler
Paste a workout note and an AI model in your browser labels it Easy to Very hard from how you described it. Free, private. Not medical advice.