BMI & Body Composition
Body mass index, body surface area and waist-to-height ratio in one pass.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
Interactive versions of the assessments used in hospital clinics: the questionnaires anaesthetists, urologists, spine surgeons and endocrinologists actually score, plus the measurements a dietitian or bariatric team works from. Everything is calculated in your browser, so nothing you enter is sent to us or stored anywhere.
These are screening aids, not diagnoses. A score points you toward the right conversation; it never replaces one. If a result worries you, send us your case and a Clinic-Y coordinator will arrange a proper review, free of charge.
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Body Measurements
Weight, shape and composition from a tape measure and a scale.
Bariatric Surgery Expectations
Excess weight, typical excess weight loss after sleeve gastrectomy or bypass, and the weight range those figures point to.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
Ideal Body Weight
Four published formulas side by side (Devine, Robinson, Miller, Hamwi) and the weight range for a healthy BMI.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
Body Fat Percentage
The U.S. Navy circumference method: neck, waist and, for women, hips.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
Lean Body Mass
Everything that is not fat, by the Boer formula, with James and Hume for comparison.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
Waist-to-Hip Ratio
Where weight sits matters as much as how much. WHO cut-offs for cardiometabolic risk.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
Waist-to-Height Ratio
A single rule that works at every height: keep your waist under half your height.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
Body Surface Area
Mosteller, DuBois and Haycock. Used to scale some treatments and heart measurements.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
Body Roundness Index
Thomas 2013. Estimates body shape from height and waist, without a scale.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
Fat-Free Mass Index
Muscle relative to height, normalised to 1.80 m as in Kouri 1995.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
Body Shape
Proportions of shoulders or bust, waist and hips, sorted into the five common shapes.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
Nutrition and Metabolism
What your body uses in a day and how to plan around it.
Daily Energy Needs
Resting metabolic rate by the Mifflin-St Jeor equation, plus daily needs at your activity level.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
Basal Metabolic Rate
Energy your body uses at complete rest. Mifflin-St Jeor, the equation dietitians now prefer.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
Harris-Benedict BMR
The classic equation in its 1984 revision, next to Mifflin-St Jeor so you can see the spread.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
Macronutrient Split
Grams of protein, carbohydrate and fat for a calorie target and a goal.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
Daily Protein Needs
From the 0.8 g per kilogram minimum up to the ranges used for training, older age and recovery after surgery.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
Daily Water Intake
A weight-based starting point, adjusted for exercise and heat.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
Daily Fibre Needs
14 grams per 1,000 kcal, the basis of most national guidelines.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
Weight-Loss Timeline
How long a target takes at a given daily deficit, using 7,700 kcal per kilogram.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
Weight-Gain Planner
A steady surplus and the weeks it takes, for recovery or for muscle.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
Heart and Circulation
Blood pressure, training zones and cholesterol ratios.
Blood Pressure Category
Where a reading falls in the 2017 ACC/AHA categories, with the European threshold noted.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
Mean Arterial Pressure
The average pressure in your arteries over one heartbeat, and pulse pressure.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
Target Heart Rate
Training zones by the Karvonen method, which accounts for your resting pulse.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
Cholesterol Ratios
Total to HDL, LDL to HDL, triglycerides to HDL and non-HDL cholesterol.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
Pregnancy and Women's Health
Dates that matter, from cycle to due date.
Pregnancy Due Date
Estimated due date and current gestational age from the first day of your last period.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
Ovulation and Fertile Window
The six most fertile days of this cycle and the next, from cycle length.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
Gestational Age
Weeks and days today, from the last period or from a known due date.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
Period Tracker
Your next three periods from your usual rhythm.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
Sleep
Bedtimes that line up with sleep cycles.
Sleep Time
Bedtimes that let you wake at the end of a 90-minute cycle rather than in the middle of one.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
Labs and Diagnostics
Convert and interpret common blood results.
Kidney Function (eGFR)
Estimated glomerular filtration rate by the CKD-EPI 2021 equation, from a serum creatinine result.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
A1c to Average Glucose
The ADAG formula: what an HbA1c percentage means as a day-to-day glucose level.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
Blood Sugar Converter
mg/dL and mmol/L, with the fasting categories.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
LDL Cholesterol (Friedewald)
Calculated LDL from a standard lipid panel. Not valid when triglycerides are 400 mg/dL or more.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
Cholesterol Unit Converter
mg/dL and mmol/L for cholesterol and for triglycerides, which use different factors.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
Creatinine Clearance
Cockcroft-Gault, the estimate drug labels still refer to for kidney dosing.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
Lifestyle
Smoking, alcohol and caffeine in numbers.
Smoking Pack-Years
The figure doctors use for lung screening eligibility and surgical risk.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
Blood Alcohol Estimate
Widmark formula. An estimate for curiosity only, never a basis for deciding to drive.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
Weekly Alcohol Units
UK units and grams of pure alcohol from what you actually drink in a week.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
Daily Caffeine
Milligrams from coffee, tea, cola and energy drinks against the 400 mg adult guide.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
Clinical Screening Questionnaires
Validated questionnaires doctors use, scored the same way.
STOP-BANG Sleep Apnoea Screen
Eight yes/no questions anaesthetists use before surgery to estimate the risk of obstructive sleep apnoea.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
Epworth Sleepiness Scale
How likely are you to doze off in ordinary situations? A standard clinic measure of daytime sleepiness.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
FINDRISC Type 2 Diabetes Risk
The Finnish diabetes risk score, used across Europe to estimate the ten-year risk of developing type 2 diabetes.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
IPSS Prostate Symptom Score
The international prostate symptom score, the standard way urologists grade urinary symptoms in men.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
Oswestry Low Back Disability Index
How much back pain limits everyday life. Spine surgeons use this before and after treatment to measure change.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
GAD-7 Anxiety Screen
Seven questions clinicians use to gauge anxiety symptoms over the last two weeks.
Please reach out today. If you are thinking about harming yourself, contact your local emergency number, or in Türkiye call 112. You do not have to handle this alone.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
PHQ-9 Depression Screen
Nine questions widely used in primary care to measure depressive symptoms over the last two weeks.
Please reach out today. If you are thinking about harming yourself, contact your local emergency number, or in Türkiye call 112. You do not have to handle this alone.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
Hair Loss Stage (Norwood / Ludwig)
The scales hair transplant surgeons use to describe pattern hair loss and estimate how many grafts a case needs.
Screening aid, not a diagnosis. Scored in your browser; nothing you enter is sent to us or stored.
These calculators give general information from published formulas. They do not diagnose, and they are no substitute for a doctor who knows your history. Nothing you enter leaves your browser.
How clinicians use these
Before an operation abroad, three things decide how smoothly it goes: whether your airway is safe under anaesthetic, whether your metabolic and kidney function are stable, and whether the symptom you travelled for is severe enough to justify the procedure. STOP-BANG answers the first, the eGFR and diabetes tools speak to the second, and IPSS, Oswestry and the Norwood scale put numbers on the third. Bringing these scores to your first consultation shortens the assessment considerably.