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HEALTH

Calories Calculator

Estimate a daily calorie target or convert food-energy units using the selected energy workflow.

Choose an energy toolEstimate a daily goal or convert food energy units.
4 options
DAILY ENERGY ESTIMATE2,343.25 kcal/day

BMR × activity. Individual needs and health circumstances vary. Educational estimate only; not medical advice.

Estimate based on the values shown
MethodMifflin–St Jeor BMR times activity, with optional goal adjustments and food-energy conversion.

Before you use the result

Educational estimate only; it cannot diagnose a condition or replace advice from a qualified health professional.

Sources

EDITORIAL NOTES

Using the Calories Calculator responsibly

Page-specific guidance based on this calculator’s implemented method, inputs, and known limits.

What this result is useful for

This estimate combines a resting-energy equation with an activity factor to provide a planning baseline for daily energy expenditure. It is useful for comparing assumptions, not for prescribing an exact intake or determining whether a diet is medically appropriate.

Assumptions and limits

Resting-energy equations describe group averages and can be inaccurate for an individual. Activity factors are broad categories; illness, pregnancy, growth, medications, adaptive metabolism, body composition, and measurement error can change actual needs.

How to check the result

Confirm the selected formula, sex input, units, and activity level. Treat the result as a starting range and compare it with weight and wellbeing trends over time. Seek qualified nutrition or medical advice for pregnancy, eating disorders, chronic disease, or major weight change.

Content review: August 30, 2026
CALCULATOR GUIDE

How to use the Calories Calculator

Estimate a daily calorie target or convert food-energy units using the selected energy workflow. It includes Maintain, Gradual loss, Gradual gain, Food energy converter workflows, so choose the one that matches the values you actually know. Use it to understand an educational estimate and the inputs behind it, not as a diagnosis or treatment decision.

Step by step

  1. For the Calories example, select Maintain and enter weight, height, age, sex, activity factor. Keep each value in the unit displayed beside its field.
  2. Review the selected Calories workflow and inputs, then read daily energy estimate in the result panel.
  3. Change one Calories assumption at a time to compare scenarios. Use Reset to restore this tool's worked example values.

How the calculation works

Mifflin–St Jeor BMR times activity, with optional goal adjustments and food-energy conversion.

Worked example

To reproduce the Calories worked example, reset the calculator. Select the Maintain workflow. Use weight 75 kg; height 175 cm; age 35 years; sex Male; activity factor 1.4. The result is daily energy estimate of 2,343.25 kcal/day. BMR × activity. Review the displayed units before comparing the result.

Understanding the result

The Calories reports daily energy estimate. Use it to understand an educational estimate and the inputs behind it, not as a diagnosis or treatment decision. Educational estimate only; it cannot diagnose a condition or replace advice from a qualified health professional.

How to check the answer

Check the Calories estimate by confirming the units and supported ranges for weight, height, age. Compare daily energy estimate with another published method or direct measurement when available, and ask a clinician before using it for a health decision.

Common questions

What does the Calories calculate?

Estimate a daily calorie target or convert food-energy units using the selected energy workflow.

Which inputs does the Calories example use?

The worked example uses weight, height, age, sex, activity factor in the Maintain workflow. Other workflows can show different fields. Keep the chosen workflow and units with the result when comparing calculations.

Is the Calories result exact?

Educational estimate only; it cannot diagnose a condition or replace advice from a qualified health professional. Recheck weight, height, age and use daily energy estimate only for a decision where that level of precision is appropriate.

Formula tests, limits, and sources reviewed September 1, 2026. Guide examples updated October 12, 2026.
INTERPRET THE RESULTRead the health guideCheck assumptions, limitations and comparison methods →
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Useful next steps

TDEEEstimate total daily energy expenditure from resting energy and the selected activity factor.BMREstimate resting energy from weight, height, age with the BMR Calculator.MacrosBuild a daily calorie and macronutrient plan for maintenance, gradual loss, or gradual gain.