This combined calculator estimates BMI, basal metabolic rate (BMR) and total daily energy expenditure (TDEE) in one place. Switch between metric and imperial units, copy results and keep a shareable link for future check-ins.
Provide your details to view BMI, BMR, TDEE and calorie targets.
How to use this health calculator
Enter sex, age, height, weight, and activity level once to see BMI, BMR, TDEE, and simple calorie targets in one place. This page is designed for quick adult screening and planning, not diagnosis.
How to read the result
BMI tells you where your weight sits relative to height, BMR estimates resting energy needs, and TDEE estimates total daily energy use after activity. The calorie target rows then show simple maintenance, deficit, and surplus reference points based on that TDEE.
When to use it
Use this page when you want a fast starting point for calorie planning, weight discussions, or fitness tracking. It works best for adults using general wellness targets rather than medical treatment plans.
When not to rely on it alone
Do not treat this page as a diagnosis, a pregnancy tool, or a full athlete nutrition plan. If you are under 18, pregnant, frail, recovering from illness, or following clinical advice, use a clinician's guidance as the main reference.
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FAQ
How are BMI, BMR, and TDEE calculated?
BMI is weight divided by height squared, BMR uses the Mifflin-St Jeor equation, and TDEE multiplies BMR by the selected activity factor. The calorie targets are simple offsets from TDEE, not a personalized meal plan.
Who is this tool designed for?
It is mainly for adults who want a quick health or calorie-planning reference. It can help with general wellness discussions, but it does not replace medical screening or sports nutrition coaching.
Can I use these results as medical advice?
No. The page gives browser-based estimates only. If you have a medical condition, are pregnant, are under 18, or need treatment-specific advice, speak with a clinician or dietitian.
Why can the result differ from another calculator?
Different tools may use different BMR equations, activity factors, rounding rules, or target-calorie policies. Compare the assumptions, not just the final number, before deciding which result to keep.
What should I do after getting the result?
Use BMI as a screening cue, then use BMR and TDEE to set a realistic maintenance, deficit, or surplus target. If the number will affect training, treatment, or a major diet change, confirm it with a qualified professional.
Use the result safely
Start with the unit system
Confirm whether you entered metric or imperial values before comparing runs. Most strange results come from height or weight being entered in the wrong unit system.
Use BMI as a screening cue, not a verdict
BMI is useful for a broad first check, but it does not tell you body-fat percentage, muscle mass, or medical risk by itself. Read it together with the BMR, TDEE, and your own context.
Use TDEE for planning, not prediction
TDEE is an estimate of daily energy use under the chosen activity level. Real intake needs can shift with season, training volume, sleep, illness, and adherence, so review it over time instead of treating one run as final.
When to escalate beyond this page
If your goal involves rapid weight change, eating-disorder recovery, chronic disease, pregnancy, or sports performance, treat this page as background information and move to professional advice.