Free Health & Wellness Calculators
Science-backed tools to help you understand your health, nutrition, and mental wellness. 55+ free calculators with instant, private results — no sign-up required.
✨ New: 27 Advanced Medical Calculators
ADHD Screening • PTSD Checklist • Bipolar Screening • Biological Age • Inflammation Risk • Sleep Quality • and 21 more
Why Use Our Health Calculators?
- Science-Backed Accuracy – All calculators use established medical formulas from CDC, NIH, WHO, and clinical research.
- 55+ Free Health Tools – Physical health, mental wellness, nutrition, and lifestyle assessments in one place.
- Instant, Private Results – Get results immediately. No data stored. Your health info stays private.
- Easy to Understand – Results explained in plain English with clear next steps.
Calculator Categories
Explore our health and wellness tools organized by category.
Physical Health Calculators
A1C, Blood Pressure, Body Fat, BMR, Heart Rate, eGFR, Framingham, Inflammation Risk, Biological Age
Mental Health Assessments
Depression, Anxiety, ACE Score, EPDS, DASS-21, ADHD, PTSD, Bipolar, Geriatric Depression, Self-Esteem, Burnout
Nutrition Calculators
Calories, Macros, Hydration, Weight Management
Lifestyle & Specialized
Sleep Quality, Insomnia, Pregnancy, Work-Life Balance, Alcohol Screening, CAGE-AID, CRAFFT Teen
NPI Lookup
Find Healthcare Provider Information
View All Calculators
Browse All 55+ Health Tools
🆕 New Medical Calculators (2026)
Clinical-grade screening tools and evidence-based calculators now available:
ACE Score Calculator
Adverse Childhood Experiences Screening
EPDS
Postpartum Depression Screening
DASS-21
Depression, Anxiety, Stress Assessment
Framingham Heart Risk
10-Year CVD Risk Calculator
eGFR Calculator
Kidney Function (CKD-EPI 2021)
Ovulation Calculator
Fertile Window Prediction
APGAR Score
Newborn Health Assessment
Ideal Body Weight
4 Formula Comparison
Waist-Hip Ratio
Abdominal Obesity Risk (WHO)
Child BMI
CDC Growth Charts (Ages 2-20)
Fagerström Test
Nicotine Dependence (FTND)
BAC Calculator
Blood Alcohol Content (Educational)
ADHD Self-Report (ASRS)
Adult ADHD Screening (WHO)
PTSD Checklist (PCL-5)
PTSD Symptom Assessment
Insomnia Severity Index
Clinical Insomnia Screening
FFMI Calculator
Fat-Free Mass Index
Bipolar Screening (MDQ)
Mood Disorder Questionnaire
Geriatric Depression (GDS-15)
Senior Depression Screening
Suicide Risk (C-SSRS)
Columbia Protocol Screening
PSQI Sleep Quality
Pittsburgh Sleep Quality
CAGE-AID Screening
Adapted Substance Use Screen
CRAFFT Teen Screening
Adolescent Substance Screening
Biological Age
Longevity Assessment
Inflammation Risk
Chronic Inflammation Risk
Sleep Quality Score
Comprehensive Sleep Assessment
GLP-1 Weight Loss
Ozempic/Mounjaro Projection
Stress Level
Perceived Stress Scale
Physical Health Calculators
Monitor your key health metrics with clinical-grade calculators based on established medical guidelines.
Mental Health Assessments
Clinically validated screening tools used by healthcare professionals worldwide. These self-assessments can help you understand your mental wellness.
Nutrition & Fitness Calculators
Plan your nutrition with precision using evidence-based formulas recommended by nutrition experts.
Lifestyle & Specialized Tools
Assess your quality of life with tools for sleep, pregnancy, work-life balance, and clinical assessments.
How Our Calculators Work
- Step 1: Choose Your Calculator – Browse 55+ tools organized by category. Each targets a specific health metric.
- Step 2: Enter Your Information – Answer simple questions or enter your measurements. All data stays in your browser.
- Step 3: Get Your Results – Receive instant results with plain-English explanations and recommended next steps.
Why Trust Our Calculators?
- Evidence-Based Formulas – Every calculator uses established medical formulas and validated clinical scales. Sources include CDC, NIH, WHO, American Heart Association, and American Diabetes Association.
- Your Privacy Protected – All calculations run in your browser. We don’t collect, store, or share any health data you enter.
- Clinically Validated Tools – Mental health assessments (PHQ-9, GAD-7, Beck Depression Inventory, ACE Score, EPDS, DASS-21, ASRS, PCL-5, MDQ, GDS-15, C-SSRS, ISI, PSQI) are the same validated instruments used by healthcare professionals.
- Regularly Updated – Our calculators are reviewed regularly to ensure accuracy with current clinical guidelines.
Most Popular Calculators
Start with one of our most-used health tools:
- A1C Calculator – Convert A1C percentage to estimated average glucose. Based on the ADAG study formula.
- Blood Pressure Calculator – Check if your BP is normal, elevated, or high per AHA guidelines.
- PHQ-9 Depression Screening – Clinically validated 9-question depression assessment.
- ACE Score Calculator – Screen for adverse childhood experiences and understand long-term health impacts.
- Framingham Heart Risk – Calculate your 10-year cardiovascular disease risk.
- Pregnancy Due Date Calculator – Calculate due date, trimester, and week-by-week milestones.
- Daily Calorie Calculator – Find your exact calorie needs using the Mifflin-St Jeor equation.
- GAD-7 Anxiety Assessment – 7-question generalized anxiety screening tool.
- ADHD Screening (ASRS) – WHO-developed 18-question adult ADHD assessment used worldwide.
- Biological Age Calculator – Discover if your body is aging faster or slower than your actual age.
Latest Health Articles
Expert guides to help you understand your health results and make informed decisions.
What Is a Dangerous A1C Level? Warning Signs You Should Know
Learn which A1C levels are concerning, what they mean for your health, and when to take action with your doctor.
PHQ-9 Score of 15: What It Means and What to Do Next
Understand what a moderately severe depression score means and the treatment options available to you.
eGFR Levels by Age: What Is Normal Kidney Function?
Find out what your eGFR number means, how it changes with age, and when to see a nephrologist.
How Many Calories to Lose 2 Pounds a Week Safely
Calculate your exact calorie deficit for safe, sustainable weight loss without crashing your metabolism.
How to Calculate Ovulation with Irregular Periods
Practical methods to track your fertile window even when your cycle length varies month to month.
ACE Score of 4 or Higher: What the Research Says About Health Risks
What a high ACE score means for your long-term health and the resilience strategies that can help.
Do I Have ADHD? 12 Signs in Adults That Get Missed
Most people picture hyperactive kids, but adult ADHD looks completely different. These subtle signs are the ones doctors say get overlooked most.
Biological Age vs Chronological Age: Why the Difference Matters
Your birthday says one thing, but your cells might tell a different story. Here’s what biological age actually measures and why it matters.
Ozempic vs Mounjaro for Weight Loss: What the Studies Show
Both GLP-1 drugs are making headlines, but they work differently. We break down the clinical trial data so you can have a better conversation with your doctor.
Am I Bipolar or Just Moody? How to Tell the Difference
Mood swings are normal, but there’s a line between everyday ups and downs and something that needs clinical attention. Here’s how to know.
About MDCodeLookup.com
We build free, science-backed health calculators that help people understand their health better. With 55+ tools based on established medical research and validated clinical scales, our mission is to make health information accessible, easy to understand, and free for everyone. Learn more about us.