Our free health calculators help you check the numbers that matter most for your long-term health, in about a minute each and without signing up. Use them to work out your BMI, read your blood pressure, plan your daily calories and protein, test your diabetes risk, find your ideal weight and waist-to-height ratio, get an overall heart health score, plan your bedtime, find your target heart rate for exercise, and score your everyday wellness habits. Each tool is built around trusted medical guidelines, with South Asian cut-offs where they apply.
Below you will find what each of our health calculators measures, who should use it and what your result means. You will also find a simple table of which numbers to check and how often, plus a yearly health check routine you can actually stick to.
Why "Know Your Numbers" Matters So Much in Pakistan
Most serious long-term conditions start silently. High blood pressure, high blood sugar and high cholesterol usually cause no pain and no warning signs for years. By the time you feel unwell, damage to the heart, kidneys, eyes or blood vessels may already have started.
This is a big issue in Pakistan and across South Asia. According to the International Diabetes Federation, Pakistan has one of the highest rates of diabetes in the world, and a large share of people with it have never been diagnosed. The World Health Organization notes that many adults with high blood pressure worldwide do not know they have it. Heart disease, meanwhile, is the leading cause of death globally.
South Asians also tend to develop diabetes and heart problems at a lower body weight and a smaller waist size than people of European background. Many of us carry extra fat around the belly even when we do not look overweight. A daily routine of sweet chai, white roti and rice, ghee, fried snacks like samosa and pakora, and mithai at every celebration does not help. Add long hours sitting at a desk or in traffic, and the risk climbs quietly.
The good news is simple: what you measure, you can manage. A few minutes with these health calculators, plus a couple of basic lab tests a year, can catch problems early, when small lifestyle changes still make a big difference.
What Our Free Health Calculators Can (and Can't) Do
Online health check tools are a great first step. They turn your height, weight, waist, blood pressure reading and lifestyle habits into clear numbers and categories. They show you where you stand today and which area to work on first.
But no free health calculator can replace a doctor or a blood test. A calculator cannot examine you, know your full medical history or measure what is happening inside your blood. Think of these health assessment tools as a torch that shows you where to look, not a final diagnosis. If any result comes out high, the next step is a proper check-up.
How to Use These Health Calculators
You do not need to use every tool at once. Here is a simple order that works for most adults:
- Gather your basics. Weigh yourself in the morning, measure your height without shoes, and measure your waist with a soft tape midway between your lowest rib and the top of your hip bone (roughly at the belly button), after breathing out normally.
- Start with your body size. Use the BMI Calculator, then the Ideal Weight & Waist-to-Height Calculator. Keep the South Asian toggle on if you are of Pakistani, Indian, Bangladeshi or Sri Lankan background.
- Check your blood pressure. Take a reading at home or at a pharmacy and enter it into the Blood Pressure Checker.
- Test your diabetes risk. Answer four quick questions (age, waist, activity and family history) in the Diabetes Risk Test.
- Plan your food. Use the Calorie & Protein Calculator to set daily targets that match your goal.
- See the big picture. Finish with the Heart Health Score, which combines diet, activity, smoking, sleep, BMI, cholesterol, blood sugar and blood pressure into one score.
- Fine-tune your daily habits. Use the Sleep Calculator to plan a bedtime, the Target Heart Rate Calculator to set your exercise intensity, and the Wellness Habits Assessment to check your sleep, activity, hydration and diet habits.
- Write your numbers down. Save the results in your phone notes and repeat the checks on the schedule in the table further down this page.
The Nine Health Calculators, Explained
Here is a closer look at each tool: what it measures, who it is for and how to read your result.
1. BMI Calculator
What it measures: Body Mass Index, a quick estimate of whether your weight suits your height. The formula is your weight in kilograms divided by your height in metres squared. You can enter height and weight in cm and kg, or in feet, inches and pounds.
Who should use it: Adults aged 18 and over. Children need BMI-for-age percentiles instead.
What your result means: Using WHO standard categories, a BMI under 18.5 is underweight, 18.5–24.9 is healthy, 25.0–29.9 is overweight and 30 or above is obese. With the South Asian cut-offs (on by default), the healthy range is 18.5–22.9, overweight is 23.0–27.4 and obese is 27.5 or above. The tool also shows your healthy weight range and how many kilograms you may need to lose or gain to reach it.
BMI has limits. It cannot tell muscle from fat, and it does not show where fat sits on your body. That is why it pairs well with a waist measurement. Try our free BMI calculator with South Asian cut-offs to see your number.
2. Blood Pressure Checker
What it measures: It sorts your reading into a category. You enter your systolic (top) number, your diastolic (bottom) number and, if you like, your resting pulse.
Who should use it: Every adult, especially if you are over 30, overweight, have a family history of high blood pressure, eat a lot of salt or have diabetes.
What your result means: Based on American Heart Association and ACC 2017 guidelines, the categories are:
- Normal: systolic 90–119 and diastolic 60–79.
- Elevated: systolic 120–129 and diastolic under 80.
- Stage 1 high: systolic 130–139 or diastolic 80–89.
- Stage 2 high: systolic 140 or more, or diastolic 90 or more.
- Hypertensive crisis: systolic above 180 and/or diastolic above 120. Seek urgent medical care.
- Low: systolic under 90 or diastolic under 60, usually only a concern if you feel dizzy or faint.
A typical resting pulse is 60–100 beats per minute. One reading is never a diagnosis, so measure on two or three different days. Read your numbers with our blood pressure chart and checker, and see the American Heart Association's guide to blood pressure readings for more detail.
3. Calorie & Protein Calculator
What it measures: How many calories your body burns each day and how much protein you need. It uses the Mifflin-St Jeor equation for your resting energy (BMR), then multiplies it by your activity level, from sedentary (1.2) to extra active (1.9), to get your maintenance calories.
Who should use it: Adults aged 18–80 who want to lose weight, maintain, or gain muscle with a clear plan rather than guesswork.
What your result means: You get your BMR, maintenance calories, a target based on your goal (for example, about 500 kcal less per day to lose roughly 0.5 kg a week), and daily grams of protein, fat and carbs. For safety, targets never go below 1,200 kcal for women or 1,500 kcal for men.
Protein intake matters more than most desi diets allow for. Many of us get plenty of roti and rice but not enough daal, eggs, chicken, fish, yoghurt or beans. The calculator suggests a range, for example 1.2–1.6 g per kg of body weight when you are losing weight, and 1.6–2.2 g per kg when gaining. Find your numbers with the calorie calculator and protein intake planner.
4. Diabetes Risk Test
What it measures: Your chance of having or developing type 2 diabetes. It is based on the Indian Diabetes Risk Score (IDRS), which was developed by the Madras Diabetes Research Foundation and validated in South Asian people, so it suits Pakistani users well.
Who should use it: Adults who have not already been diagnosed with diabetes.
What your result means: You answer four questions on age, waist size, physical activity and family history. Your score runs from 0 to 100. Under 30 is low risk, 30–50 is moderate and 60 or above is high. If your risk is high, the next step is a fasting blood sugar or HbA1c test soon. If it is moderate, start lifestyle changes and test within a year. If it is low, recheck yearly; adults aged 35 and over should still be screened from time to time.
Take the 2-minute diabetes risk test for South Asians, and read the WHO diabetes fact sheet to understand why early detection matters.
5. Ideal Weight & Waist-to-Height Calculator
What it measures: Two things. First, your ideal body weight using four well-known formulas (Devine, Robinson, Miller and Hamwi), alongside your healthy-BMI weight range. Second, your waist-to-height ratio, which is your waist divided by your height.
Who should use it: Anyone who wants a realistic target weight, and anyone who carries weight around the middle. The ideal weight formulas work for people over 5 ft (152 cm); below that, only the BMI range is shown.
What your result means: A waist-to-height ratio of 0.40–0.49 is healthy, 0.50–0.59 means increased risk and 0.60 or more means high risk. Under 0.40 may point to being underweight. The easy rule from NICE: keep your waist to less than half your height. For South Asians, waist size alone signals increased risk at 90 cm or more for men and 80 cm or more for women.
Belly fat is closely linked with diabetes and heart disease, so this is one of the most useful numbers you can know. Check yours with the ideal weight and waist to height ratio calculator.
6. Heart Health Score
What it measures: An overall picture of your heart health, inspired by the American Heart Association's Life's Essential 8 framework. It is a simplified, unofficial version and is not affiliated with the AHA. It scores eight areas from 0 to 100: diet, physical activity, nicotine (including shisha and naswar), sleep, BMI, cholesterol, blood sugar and blood pressure.
Who should use it: Adults who want one simple heart health check that shows their strongest and weakest habits. It is especially helpful if you have recent lab results, but you can skip any lab value you do not know.
What your result means: Your overall score is the average of the areas you answered. A score of 80–100 means high cardiovascular health, 50–79 is moderate and 0–49 is low. The tool also points out your two weakest areas, so you know exactly where to start. Get your score with the heart health score check.
7. Sleep Calculator
What it measures: The best times to go to bed or wake up, based on sleep cycles. You can choose "I need to wake up at…" to get suggested bedtimes, or "I'm going to bed at…" to get suggested wake-up times. The tool assumes one sleep cycle lasts about 90 minutes (real cycles vary from roughly 70 to 120 minutes) and that you take 15 minutes to fall asleep, which you can change to 5, 10, 20 or 30 minutes.
Who should use it: Anyone who wakes up groggy, works shifts, has an early start or a long commute, or wants a more regular sleep schedule. Late-night chai, screens and hot summer nights make good sleep harder for many of us, so a fixed plan helps.
What your result means: You get times for 6, 5, 4 and 3 cycles, which equal 9, 7.5, 6 and 4.5 hours of sleep. Five or six cycles (7.5–9 hours) are marked recommended, four cycles are OK occasionally, and three cycles are not enough. Guidance from sleep experts suggests 8–10 hours for teens aged 13–17, 7–9 hours for adults aged 18–64, and 7–8 hours for adults 65 and over. Waking at the end of a cycle can feel less groggy, but total sleep and a consistent schedule matter most. Plan your night with the sleep calculator for bedtimes and wake-up times.
8. Target Heart Rate Calculator
What it measures: Your estimated maximum heart rate and the heart rate ranges for different exercise intensities. You enter your age and, if you know it, your resting heart rate. You can choose the classic "220 minus age" formula (the default) or the Tanaka formula (208 minus 0.7 × age). If you add your resting heart rate, the tool uses the Karvonen (heart-rate reserve) method for more personal targets.
Who should use it: Adults and teens aged 15–90 who walk, run, cycle or train at the gym and want to know whether they are working hard enough, or too hard. If you have a heart condition, are pregnant, are new to exercise or take medicines such as beta-blockers that lower heart rate, get medical advice first.
What your result means: Following American Heart Association guidance, moderate intensity is 50–70% of your maximum heart rate and vigorous intensity is 70–85%. The tool also shows five training zones in beats per minute: Zone 1 very light (50–60%), Zone 2 light or fat-burning and base (60–70%), Zone 3 moderate or aerobic (70–80%), Zone 4 hard or threshold (80–90%) and Zone 5 maximum (90–100%). These formulas are estimates, and your real maximum can differ by 10–12 beats per minute. Stop and seek help if you get chest pain, severe breathlessness, dizziness or palpitations. Find your zones with the target heart rate calculator and training zones chart.
9. Wellness Habits Assessment
What it measures: How healthy your everyday habits are across four areas: sleep, activity, hydration and diet. You answer 12 quick questions, three per area, about things like sleep hours, how rested you feel, weekly walking minutes, strength training, hours spent sitting, glasses of water, urine colour, sugary drinks such as sweet chai and sherbet, fruit and vegetables, fried food and whole grains or daal.
Who should use it: Anyone who wants a quick lifestyle check-up without needing a tape measure, BP monitor or lab report. It is a good starting point if you are not sure which habit to change first.
What your result means: Each area gets a score out of 100%, and your overall score is the average of the four. A score of 80–100 is excellent, 60–79 is good, 40–59 is fair and 0–39 needs attention. Any area under 67% comes with two or three practical tips. This is general education, not medical advice. Check your habits with the free wellness habits assessment.
Health Calculators Checklist: Which Numbers to Check, and How Often
Use this table as your personal "know your numbers" checklist. The targets match the thresholds used in our health calculators. Your doctor may set different targets for you, especially if you already have a condition.
| Measure | Healthy target (adults) | How often to check |
|---|---|---|
| Weight and BMI | BMI 18.5–22.9 (South Asian cut-offs) or 18.5–24.9 (WHO standard) | Monthly; weekly if you are actively losing or gaining weight |
| Waist circumference | Under 90 cm (men) / under 80 cm (women) for South Asians | Every 1–3 months |
| Waist-to-height ratio | 0.40–0.49 (waist less than half your height) | Every 1–3 months |
| Blood pressure | Under 120/80 mmHg | At least once a year if normal; more often if elevated or high, as your doctor advises |
| Resting pulse (resting heart rate) | 60–100 beats per minute (lower can be normal for fit people) | Whenever you check blood pressure, or monthly first thing in the morning; enter it in the Target Heart Rate Calculator |
| Fasting blood sugar | Under 100 mg/dL | Yearly from age 35, or earlier if overweight or with a family history |
| HbA1c | Under 5.7% | Yearly if at risk; as advised if prediabetic |
| Non-HDL cholesterol (lipid profile) | Under 130 mg/dL | Every 1–5 years depending on risk; yearly if high or on treatment |
| Physical activity | 150+ minutes of moderate activity per week | Track weekly |
| Sleep hours | 7–9 hours per night for adults 18–64 (7–8 hours at 65+; 8–10 hours for teens) | Track weekly; use the Sleep Calculator to plan a regular bedtime |
The activity target follows the WHO physical activity guidelines, which recommend at least 150 minutes of moderate activity each week for adults. A brisk 30-minute walk after Maghrib on five days a week gets you there.
Understanding Key Blood Test Results
Two blood tests do most of the heavy lifting in a yearly check-up. Here is how to read them.
Fasting Blood Sugar and HbA1c
A fasting blood sugar test is done after 8–10 hours without food (water is fine). HbA1c needs no fasting and shows your average blood sugar over the last two to three months.
- Fasting sugar: under 100 mg/dL is normal, 100–125 is prediabetes, and 126 or more on two tests suggests diabetes.
- HbA1c: under 5.7% is normal, 5.7–6.4% is prediabetes, and 6.5% or more suggests diabetes.
Prediabetes is a warning, not a sentence. Many people bring their numbers back to normal with weight loss, more walking and fewer sugary drinks.
Lipid Profile
A lipid profile measures total cholesterol, HDL ("good") cholesterol, LDL ("bad") cholesterol and triglycerides. Our Heart Health Score uses non-HDL cholesterol, which is simply your total cholesterol minus your HDL. A non-HDL level under 130 mg/dL scores best. Many labs in Pakistan ask you to fast for 9–12 hours before this test, so check with your lab when you book.
Build a Simple Yearly Health Check Routine
Pair your health calculators with lab tests once a year. Health screening in Pakistan is easier than many people think. Most major cities have reliable labs where you can walk in for basic tests, and home sample collection is widely available. Here is a simple routine to follow every year.
Every Day or Week
- Walk, cycle or exercise for 20–30 minutes on most days.
- Aim for 7–9 hours of sleep.
- Fill half your plate with vegetables and salad, and choose daal, chicken, fish or beans for protein.
- Cut back on sugar in chai, cold drinks and mithai, and keep fried snacks to once or twice a week.
Every Month
- Weigh yourself and re-run the BMI Calculator.
- If you have a home monitor, take a few blood pressure readings and enter them into the Blood Pressure Checker.
Every Three Months
- Measure your waist and check your waist-to-height ratio.
- Re-run the Calorie & Protein Calculator if your weight or activity level has changed.
Once a Year
- Get a fasting blood sugar or HbA1c test, and a lipid profile.
- Have a full check-up with your doctor, including a blood pressure reading in the clinic.
- Retake the Diabetes Risk Test and the Heart Health Score, and compare your results with last year.
- Book a time in your calendar now, for example around your birthday or the start of the new year, so it does not get forgotten.
Using a Home Blood Pressure Monitor
A digital upper-arm BP monitor is one of the best health investments a Pakistani household can make. It is especially useful if parents or grandparents live with you. To get an accurate reading:
- Avoid tea, coffee, smoking and exercise for 30 minutes before.
- Sit quietly with your back supported for 5 minutes.
- Rest your arm on a table so the cuff is at heart level, with feet flat on the floor.
- Take two readings a minute apart and note both.
- Repeat on two or three different days before drawing any conclusions.
The NHS considers home readings of 135/85 or more to be high. You can learn more on the NHS high blood pressure page.
Making Healthy Habits Part of Your Daily Wellness Routine
Health calculators show you the numbers, but numbers only improve when habits change. The small, steady things matter most: walking daily, eating more protein and vegetables, sleeping well, cutting back on sugar and fried food, and not smoking. Pick the weakest area from your Heart Health Score and work on that one first for a month.
Many people like to build a calm morning ritual around these habits, such as a glass of water, a short walk, a protein-rich breakfast and perhaps a natural supplement they enjoy. If pure Himalayan shilajit is part of your daily wellness routine, you can explore our pure shilajit resin or view the independent lab reports for our products. Shilajit is not a treatment for any condition and does not replace medicine, diet or exercise. If you have a health condition or take any regular medication, speak to your doctor before adding any supplement.
When to See a Doctor
Health calculators are useful for spotting trends, but some results should always lead to a proper medical check. Book an appointment with a doctor if:
- Your blood pressure is in Stage 1 or Stage 2 on repeat readings, or regularly 135/85 or more at home.
- Your Diabetes Risk Test score is 60 or higher.
- Your fasting sugar is 100 mg/dL or more, or your HbA1c is 5.7% or more.
- Your BMI is in the obese range or your waist-to-height ratio is 0.60 or more.
- Your Heart Health Score is below 50, or you have a family history of early heart disease.
- You have low blood pressure along with dizziness or fainting.
- You have symptoms such as constant thirst, passing urine often, unexplained weight loss, blurred vision or wounds that heal slowly.
Get emergency help straight away by calling 1122 or 115 in Pakistan (or your local emergency number abroad) if you have chest pain, sudden breathlessness, a severe headache, sudden vision changes, weakness or numbness in the face, arm or leg, slurred speech, or a blood pressure reading above 180/120. Do not wait to see if it passes.
Knowing your numbers is not about worrying. It is about catching small problems early, while they are still easy to fix.
Disclaimer
These health calculators are for general education only. They are not a diagnosis and do not replace advice, examination or tests from a qualified doctor. Results are estimates based on the information you enter and published guidelines. Always consult a qualified doctor about your health, any high readings, and before starting, stopping or changing any medication or supplement.
