Know your body.
Pick a tool, get an answer.
Free, evidence-based calculators and assessments — built on CDC and WHO guidance, validated screenings, and ADA / AHA frameworks, explained in plain language. Everything runs in your browser. No account, no waiting room.
Quick check: your BMI
Most used right now
Start here if you're not sure where to begin.
Anxiety Screener (GAD-7)
A validated anxiety check, in plain language.
Take anxiety test →Diabetes Risk
ADA-based risk factors, scored simply.
Check diabetes risk →Weight Loss Calculator
A realistic timeline to your goal weight.
Plan weight loss →🏃 Fitness & Weight Loss
10 tools View full suite →Move more, weigh less — with numbers you can actually use.
Calories Burned
Estimate energy used by any activity.
Use tool →Walking Calories
Walking, turned into calories.
Use tool →Running Pace
Pace per mile or kilometre.
Use tool →One Rep Max (1RM)
Your estimated max lift.
Use tool →Body Fat %
Navy method estimate.
Use tool →Weight Loss Calculator
A realistic timeline to goal.
Use tool →Weight Gain Calculator
A timeline for gaining mass.
Use tool →Intermittent Fasting
Plan your eating window.
Use tool →Step-to-Calorie
Steps converted to energy.
Use tool →Daily Macro Calculator
Protein, fat and carb targets.
Use tool →🧠 Mental Health
7 tools View full suite →Validated screenings, scored gently, in plain language.
Anxiety Screener (GAD-7)
A validated anxiety check.
Use tool →Depression Screener (PHQ-9)
A validated mood check.
Use tool →Stress Level Test
How stressed you feel, scored.
Use tool →Burnout Risk
Work burnout, assessed.
Use tool →Sleep Quality
How well you sleep, scored.
Use tool →Sleep Debt
How much sleep you owe.
Use tool →ADHD Self-Test
Adult ADHD screener.
Use tool →🥗 Nutrition Tools
7 tools View full suite →Food, labels and hydration — without the guesswork.
Nutrition Facts Analyzer
Labels, in plain daily values.
Use tool →Vitamin Intake
What you need, by vitamin.
Use tool →Added Sugar Intake
Against WHO guidance.
Use tool →Fiber Intake
Your daily fiber target.
Use tool →Water Intake
Hydration by body weight.
Use tool →Meal Calorie Counter
Add up a whole meal.
Use tool →Hand Portion Guide
Portions, without a scale.
Use tool →❤️ Health Risk Assessment
8 tools View full suite →Early signals, explained — not scary, just clear.
Diabetes Risk
ADA-based risk factors.
Use tool →Heart Disease Risk
Simplified Framingham estimate.
Use tool →Blood Pressure Category
AHA/ACC category, explained.
Use tool →Cholesterol Ratio
TC/HDL and LDL/HDL ratios.
Use tool →Metabolic Age
BMR versus your age.
Use tool →Waist-Hip Ratio
A simple heart-risk ratio.
Use tool →Smoking Cost
Money and health cost, together.
Use tool →Alcohol Consumption
Units and calories tracked.
Use tool →🌸 Women's Health
7 tools View full suite →Pregnancy, fertility and menopause — private, in-browser.
Pregnancy Due Date
Naegele's rule estimate.
Use tool →Ovulation Calculator
Your fertile days, predicted.
Use tool →Conception Date
Worked back from due date.
Use tool →Pregnancy Weight Gain
IOM guidance range.
Use tool →Fertility Window
Your 6 most fertile days.
Use tool →Menopause Assessment
Symptoms, scored.
Use tool →Baby Growth Tracker
Growth, checked over time.
Use tool →🌿 Healthy Lifestyle
8 tools View full suite →Small daily habits, turned into a score you can improve.
Daily Habit Tracker
Tick off healthy habits.
Use tool →Healthy Aging Calculator
Biological versus calendar age.
Use tool →Screen Time Calculator
Against recommended limits.
Use tool →Daily Wellness Score
Your day, rated across areas.
Use tool →Hydration Tracker
Are you drinking enough?
Use tool →Sitting Time Calculator
How sedentary is your day?
Use tool →Life Expectancy Calculator
Lifestyle-based estimate.
Use tool →Healthy Lifestyle Assessment
Your overall habits, rated.
Use tool →1. Pick a tool
Choose by goal, not by medical jargon. Every card says what it does in one line.
2. Answer in your browser
Nothing is sent to a server to sign up. Results are calculated on your device.
3. Get a plain answer
A number, a category, and what to do next — plus when to talk to a clinician.
Frequently asked questions
Yes. All 47 tools on this page are free, with no sign-up required.
They use established guidelines and validated screening methods, but they are estimates and screenings, not diagnoses. Use them to understand risk and decide when to seek care.
The PHQ-9 is a widely used, validated 9-question depression severity questionnaire. Our screener uses that same method, scored in plain language.
Yes. The hub and the tools are fully responsive, so they work on phones, tablets and desktops.
Start with one number today
Pick the check that matters most to you right now — it takes about 2 minutes.
Browse all 47 tools ↑