Wellbeing Calculators
52 free, evidence-based calculators across wellbeing, sleep, fitness, nutrition, and workplace health. All calculations run in your browser — no account required.
A. Wellbeing & Mental Health
Wellbeing Score Calculator
Assess your overall wellbeing across five key dimensions.
WHO-5 Wellbeing Index
Official WHO-5 tool: score 0–100, flags depression screening threshold.
PERMA Wellbeing Calculator
Measure Positive Emotions, Engagement, Relationships, Meaning, Accomplishment.
Stress Level Calculator
Gauge your current stress load and identify contributing factors.
Burnout Risk Calculator
Measure exhaustion, cynicism, and efficacy — the three burnout dimensions.
Work-Life Balance Calculator
Find out how balanced your time and energy across work and life really is.
Self-Care Score Calculator
Assess how well you are meeting your basic self-care needs.
Gratitude Score Calculator
Measure your gratitude disposition using a validated scale.
Loneliness Score Calculator
Based on the UCLA Loneliness Scale — identify social connection gaps.
Resilience Score Calculator
Assess your capacity to bounce back from stress and adversity.
Screen Time Balance Calculator
See how your daily screen use compares to evidence-based guidelines.
Mindful Minutes Planner
Plan a realistic daily mindfulness practice based on your schedule.
Student Stress Calculator
Academic stress assessment tailored to students and learners.
Remote Work Wellbeing Calculator
Identify wellbeing risks specific to working from home.
Financial Stress Calculator
Measure how much your finances are affecting your mental health.
B. Sleep & Recovery
Sleep Calculator
Find bedtimes and wake times based on 90-minute sleep cycles.
Sleep Debt Calculator
Calculate accumulated sleep debt and how long recovery takes.
Sleep Efficiency Calculator
Measure the quality ratio of your time in bed vs time asleep.
Nap Calculator
Find the best nap length for alertness, creativity, or full recovery.
Caffeine Intake Calculator
Track caffeine half-life and find the right cut-off time for sleep.
Recovery Score Calculator
Assess how well you are recovering between training sessions.
C. Body & Fitness
BMI Calculator
Body Mass Index with context on its limitations and use.
BMR Calculator
Basal Metabolic Rate using the Mifflin-St Jeor equation.
TDEE Calculator
Total Daily Energy Expenditure based on activity level.
Body Fat Calculator
Body fat percentage using the validated US Navy method.
Waist-to-Hip Ratio Calculator
WHO-standard cardiovascular risk assessment.
Waist-to-Height Ratio Calculator
A simple risk marker that works across ethnicities.
Ideal Weight Calculator
A healthy weight range based on the Devine formula.
Lean Body Mass Calculator
Estimate fat-free mass using the Boer formula.
One-Rep Max Calculator
Epley and Brzycki 1RM estimates from submaximal lifts.
Max Heart Rate Calculator
Age-based MHR using the validated Tanaka formula.
Heart Rate Zone Calculator
Five training zones via the Karvonen method.
Resting Heart Rate Calculator
Measure and interpret your resting heart rate.
Calories Burned Calculator
MET-based calorie burn for hundreds of activities.
Steps to Calories Calculator
Convert daily step count to distance and calories.
Daily Step Goal Calculator
Find your optimal daily step target based on your goals.
Running Pace Calculator
Calculate pace, speed, and finish time for any distance.
Race Time Predictor
Predict finish time at a new distance using the Riegel formula.
Cycling Speed & Power Calculator
Estimate average speed and power output for cycling.
VO2 Max Estimator
Estimate aerobic fitness from a 12-minute run test.
Swimming Pace Calculator
Calculate swim pace per 100m or 100 yards.
Weight Loss Timeline Calculator
Safe weight loss rate with evidence-based calorie targets.
Muscle Gain Calculator
Realistic muscle gain timeline and calorie surplus guidance.
D. Nutrition & Hydration
Water Intake Calculator
Daily hydration needs based on weight, sex, and activity.
Protein Intake Calculator
Optimal protein range for your goal from ISSN guidelines.
Macro Calculator
Carb, protein, and fat split in grams from your TDEE.
Fibre Intake Calculator
Daily fibre target based on calorie intake and age.
Alcohol Units Calculator
Standard UK units and weekly limit context for any drink.
Meal Calorie Split Calculator
Distribute daily calories across meals for your eating pattern.
E. Workplace & Organisation
Evidence-Based, Not Guesswork
Every formula is sourced from peer-reviewed research or established clinical guidelines. Sources are cited on each calculator page.
Read our wellbeing guides