Daily nutrition calculator

Calculate your daily nutrition needs with clarity.

Estimate calories, protein, carbohydrates, fats, fiber, hydration, and practical food portions from your age, height, weight, activity, and goal.

  • ✓ Private
  • ϟ Fast
  • ◎ Evidence-aware
Private by design

Daily Health Calculator

Your entries stay in this browser. Results are educational estimates for generally healthy adults, not a diagnosis or medical diet.

1. Your details

2. Activity and goal

3. Safety check

Select anything that applies. The tool will limit its output and direct you to individualized support.

No account required. Calculator entries are processed locally in your browser.

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Practical estimates

See a clear daily starting point instead of disconnected nutrition numbers.

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Private by design

Your weight, height, age, and selections are not stored by the calculator.

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Useful details

Translate calories and macros into meal-level targets and food-group amounts.

Simple by design

Your daily plan in three quick steps

No sign-up, complicated dashboard, or personal profile is required.

Enter your details

Choose units and add your age, height, weight, and equation option.

Select activity and goal

Choose the activity level, weight direction, eating pattern, and meal count that best fit you.

Review your estimates

Get calorie, macro, fiber, water, and example portion guidance immediately.

More than a calorie number

Understand the pieces that shape a daily nutrition plan.

A calorie target is only one part of the picture. Daily Health Calculator organizes energy, protein, carbohydrates, fats, fiber, hydration, meal distribution, and food groups into one readable result.

  • Metric and imperial measurements
  • Five activity levels and five goal options
  • Balanced, vegetarian, vegan, and higher-protein patterns
How the calculator works →
Your daily framework

One body, several connected needs

Use the results as a planning framework and adjust with qualified professional support when your health situation requires it.

EnergyResting and total daily calorie estimates.
MacrosProtein, carbohydrate, and fat targets.
HydrationA practical daily fluid starting range.
Food portionsExample food-group grams and meal splits.
Latest guidance

Learn the reasoning behind the numbers

Read practical articles about calorie needs, macros, hydration, portions, habits, and sustainable planning.

Helpful answers

Frequently asked questions

Important context before using a calculator result.

How does the daily health calculator work?
It estimates resting energy with the Mifflin–St Jeor equation, applies an activity factor, adjusts for the selected goal, and then calculates practical macro, fiber, hydration, and food-portion ranges.
Does the calculator store my weight or height?
No. The calculation runs in your browser. The calculator does not submit or save the values you enter.
Are the results medical advice?
No. Results are educational estimates for generally healthy adults and cannot diagnose a condition or replace individualized care.
Can teenagers use the calculator?
The tool does not provide prescriptive estimates for anyone under 18 because growth and development require age-specific assessment.
What can change my actual nutrition needs?
Medical conditions, medications, pregnancy, breastfeeding, training load, climate, body composition, recovery, and measured outcomes can all change individual needs.
Why might another calculator show a different result?
Different tools can use different equations, activity multipliers, goal adjustments, and macro assumptions. Treat every calculator as a starting estimate rather than a precise measurement.

Your next healthy decision starts here.

Run your estimate, review the assumptions, and use the educational library to turn the result into realistic daily choices.

Calculate now →