Calzivo

Health & Fitness Calculators

Calorie Calculator

Estimate a maintenance-energy range from resting energy and a disclosed activity band.

Estimate maintenance energy

Estimate resting energy, then apply one broad FAO physical-activity-level range.

Physical-activity-level band

Choose the description that best reflects the overall lifestyle, not exercise sessions alone.

Enter resting-energy inputs and select one activity band, then calculate.

Resting energy and PAL

The calculator first uses Mifflin-St Jeor for resting energy, then multiplies that unrounded estimate by both endpoints of the selected FAO PAL band.

See the BMR Calculator for the resting-energy calculation alone.

Three activity bands

  • Sedentary or light: PAL 1.40-1.69
  • Active or moderately active: PAL 1.70-1.99
  • Vigorous or vigorously active: PAL 2.00-2.40

Worked example

An unrounded resting-energy estimate of 1,780 kcal/day with PAL 1.40-1.69 gives 2,492 to 3,008.2, displayed as 2,492-3,008 kcal/day.

Use the Macro Calculator only when you already have a calorie number and percentages to convert.

Why actual needs vary

  • Movement, body composition, environment, health, and measurement error affect expenditure.
  • PAL descriptions cannot precisely classify every individual.
  • No fixed deficit, surplus, or weekly-change prediction is included.
  • Pregnancy, lactation, childhood, illness, eating disorders, and clinical nutrition require different assessment.

Quick answers

What this calculator answers

  • Result: Produces one rounded daily maintenance-energy range rather than a precise point target.
  • Resting basis: Uses the unrounded Mifflin-St Jeor resting-energy estimate.
  • Activity: Applies one selected FAO physical-activity-level range.
  • Limit: PAL is a broad population assumption, not measured individual expenditure or an intake prescription.

Transparency note

Accuracy and limitations

Calzivo tools are built for practical estimates, conversions, and checks. Some tools use standard formulas or simplified assumptions, and results can be affected by input accuracy, rounding, units, local rules, or changing official requirements.

Health and fitness results are estimates, not medical advice. Formulas simplify real bodies and cycles, so important health decisions should be checked with a qualified clinician.

Reference check

Sources and references

These references provide background context for the topic. They do not replace official advice or documents for personal decisions.

How to Use This Tool

Use these steps to enter the right inputs and interpret the result correctly.

1

Enter the required values in the input fields.

2

The tool will automatically calculate or process the data.

3

Review the results in the result area.

4

Copy or reset the results as needed.

Related Tools

Compare the maintenance range with resting-energy and macro-conversion tools.

BMR Calculator

Estimate resting energy with the Mifflin-St Jeor equation and transparent assumptions.

Calculate BMR

Macro Calculator

Convert entered calories and macro percentages into protein, carbohydrate, and fat grams.

Calculate Macros

BMI Calculator

Calculate adult BMI from height and weight with cautious screening-category context.

Check BMI

Body Fat Calculator

Estimate body fat percentage from defined circumference measurements with a historical equation.

Check Body Fat

Frequently Asked Questions

Common questions about Calorie Calculator and how to read the result.

Why is the result a range?

FAO describes physical-activity lifestyles as PAL ranges. A range avoids presenting one broad activity assumption as individually precise.

Is this TDEE?

It is a planning range produced by multiplying estimated resting energy by a PAL range. It is not measured total daily energy expenditure.

Why are there no deficit or surplus targets?

A fixed adjustment is not universally appropriate. This tool is limited to a transparent maintenance-energy estimate.

Should I choose a band from exercise days alone?

No. PAL describes an overall lifestyle and is broader than scheduled exercise alone.