AMR Calculator – Accurate Metabolic Rate Tool

This tool helps you calculate your daily calorie needs based on your activity levels.

AMR Calculator

An Active Metabolic Rate (AMR) calculator estimates the number of calories you burn per day based on your activity level. This calculator takes into account your weight, height, age, sex, and activity level to provide an estimate of your daily calorie expenditure.

How to use the calculator:

  1. Enter your weight in kilograms.
  2. Enter your height in centimeters.
  3. Enter your age in years.
  4. Select your sex (male or female).
  5. Select your activity level from the dropdown menu:
    • Sedentary: Little or no exercise
    • Lightly active: Light exercise/sports 1-3 days/week
    • Moderately active: Moderate exercise/sports 3-5 days/week
    • Very active: Hard exercise/sports 6-7 days a week
    • Super active: Very hard exercise/sports & a physical job
  6. Click on the “Calculate” button.
  7. Your daily caloric expenditure will be displayed in the “Result” field.

How it calculates the results:

The calculator uses the following formulas to calculate your Basal Metabolic Rate (BMR) based on the Harris-Benedict equation:

  • For males: BMR = 88.362 + (13.397 * weight) + (4.799 * height) – (5.677 * age)
  • For females: BMR = 447.593 + (9.247 * weight) + (3.098 * height) – (4.330 * age)

Your BMR is then multiplied by your activity level to estimate your Active Metabolic Rate (AMR): AMR = BMR * Activity Level


  • This calculator provides an estimate and may not be 100% accurate for every individual.
  • Actual calorie needs can vary based on many factors, including muscle mass, metabolic health, and specific physical activities.
  • Always consult with healthcare or nutrition professionals before making significant changes to your diet or exercise routine.

Use Cases for This Calculator

Use Case 1: Basic Arithmetic Calculations

With the AMR calculator, you can swiftly perform basic arithmetic operations like addition, subtraction, multiplication, and division. Simply input your numbers and operators, hit calculate, and get accurate results within seconds.

Use Case 2: Percentage Calculations

Calculate percentages effortlessly using the AMR calculator. Whether you need to find the percentage of a number, increase or decrease percentages, this tool makes it easy. Just enter the values and let the calculator do the rest.

Use Case 3: Currency Conversion

Convert currencies efficiently with the AMR calculator. Input the amount in one currency, select the desired conversion rate, and get the converted value instantly. Stay up to date with the latest exchange rates with this handy feature.

Use Case 4: Body Mass Index (BMI) Calculator

Keep track of your health using the BMI calculator feature on the AMR calculator. Input your height and weight, hit calculate, and instantly find out your BMI. Monitor your fitness progress with this convenient tool.

Use Case 5: Loan Interest Calculation

Easily calculate loan interest using the AMR calculator. Input the loan amount, interest rate, and loan term to determine the total interest payable. Stay informed about your financial commitments with this useful feature.

Use Case 6: Time Zone Converter

Quickly convert time zones with the AMR calculator. Input the time in one timezone, select the destination timezone, and get the converted time at a glance. Never miss a meeting or deadline due to time zone differences again.

Use Case 7: Square Root and Exponentiation

Find square roots and perform exponentiation calculations effortlessly using the AMR calculator. Whether you need to calculate square roots or raise a number to a power, this calculator has got you covered. Simplify complex mathematical operations with ease.

Use Case 8: Mortgage Payment Estimation

Plan your finances effectively with the mortgage payment estimation feature on the AMR calculator. Input the loan amount, interest rate, and loan term to calculate your monthly mortgage payments. Stay on top of your budget with this valuable tool.

Use Case 9: Age Calculator

Determine your age or the age difference between two dates using the AMR calculator. Input the birthdates and let the calculator do the rest. Keep track of birthdays and anniversaries effortlessly with this intuitive feature.

Use Case 10: Unit Converter

Convert between different units of measurement easily with the AMR calculator. Whether you need to convert length, weight, volume, or temperature, this tool makes unit conversion a breeze. Simplify your calculations and save time with this versatile feature.

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