Health
Calorie Calculator
Illustrate adult resting energy and TDEE using Mifflin-St Jeor and activity presets. Not a diet prescription or weight-loss forecast.
Guide
How to use the Calorie Calculator
The Calorie Calculator helps you make a quick estimate, compare scenarios, and understand the numbers behind the result. It is designed for fast planning, with enough context to make the answer useful instead of just a number.
- Enter current measurements as accurately as possible, using the unit system that fits you best.
- Read the equation, reference assumptions and limitations alongside the estimate.
- Adjust assumptions such as activity level, sex, age, or goal where the calculator supports them.
Method
How this calculator works
Mifflin-St Jeor resting estimate = 10 x kg + 6.25 x cm - 5 x age + 5 (male formula) or -161 (female formula). Multipliers 1.2-1.9 illustrate activity. The tool shows arithmetic adjustments, not a weight-loss forecast.
This calculator is useful for understanding an adult energy-estimate formula and its assumptions, not prescribing food intake.
Because assumptions matter, try a few values that represent optimistic, typical, and conservative cases.
Health calculators are screening and planning tools, not medical advice. They cannot replace a clinician's evaluation.
Example
Worked example
For the female formula at age 35, 72.7 kg and 165 cm, estimated resting energy is 1,422 kcal/day. With the 1.55 activity preset, TDEE is about 2,204 kcal/day. Subtracting 500 gives 1,704 kcal/day as arithmetic, not a prescribed intake.
FAQ
Common questions
Does a 500-calorie difference guarantee weekly weight loss?
No. The calculator subtracts 500 from an estimated daily energy expenditure; it does not model changing expenditure, water weight or a timeline.
Can I use this during pregnancy or breastfeeding?
No. This generic adult energy illustration is not a pregnancy, breastfeeding or pediatric nutrition tool. Seek individualized guidance.
What information do I need for the Calorie?
You usually need adult age, formula sex, positive height and weight, and an activity preset. You can change the inputs and recalculate as many times as needed.
How does the Calorie calculate the result?
Mifflin-St Jeor resting estimate = 10 x kg + 6.25 x cm - 5 x age + 5 (male formula) or -161 (female formula). Multipliers 1.2-1.9 illustrate activity. The tool shows arithmetic adjustments, not a weight-loss forecast.
Are the results exact?
Health calculators are screening and planning tools, not medical advice. They cannot replace a clinician's evaluation.
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