Answer:
You need your height, weight and age to calculate it. Here is an article that explains it and how to calculate it. It's very easy actually.
To calculate to your Basal Metabolic Rate (BMR) you need to know:
-Your Sex
-Your Height
-Your Weight
-Your Age
Imperial BMR Formula
Female BMR = 655 + ( 4.35 x weight in pounds ) + ( 4.7 x height in inches ) - ( 4.7 x age in years )
Male BMR = 66 + ( 6.23 x weight in pounds ) + ( 12.7 x height in inches ) - ( 6.8 x age in year )
Metric BMR Formula
Female BMR = 655 + ( 9.6 x weight in kilos ) + ( 1.8 x height in cm ) - ( 4.7 x age in years )
Male BMR = 66 + ( 13.7 x weight in kilos ) + ( 5 x height in cm ) - ( 6.8 x age in years )
Measuring your actual metabolic rate required constant analysis of your body. Your metabolic rate constantly changes, depending on what you are doing, orientation of your body, the food you have eaten, and lots more.