Example
Estimate maintenance calories for a 35-year-old adult with moderate activity.
Health
Daily Calorie Calculator
Estimate daily calories for an adult using age, height, weight, and activity level.
● ToolEnter your information below
Estimated maintenance calories2,228 calories/dayEstimated BMR1,437 calories/day
Adult estimate using the Mifflin-St Jeor equation; actual energy needs vary. This is not a diet prescription. Source: published Mifflin-St Jeor equation.
For adults only. Entries stay in this page and are not saved or sent to an account.
Local export optionsNever uploaded
Plain-language reference
How this tool gets the answer
What it calculates
Estimate daily calories for an adult using age, height, weight, and activity level.
Method
The tool estimates basal metabolic rate with the Mifflin-St Jeor equation and multiplies it by the selected activity factor to estimate maintenance calories.
Keep in mind
These adult equations do not diagnose health, account for every body type or circumstance, or replace individualized clinical assessment. This limitation is especially important when using the daily calorie calculator for a consequential or shared decision.
Page owner: Anchor Apps LLC · Calculation and content last verified August 9, 2026.