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2017.01.08
New calculla released ! Please go to calculla.com for the calculla v2. It's better, faster, more beautiful, redone for you in most modern technologies.
2015.08.25
Two cars related tables released today: Tire codes - speed ratings and Tire codes - load index
2015.07.30
2015.04.06
This time 3 new calculators for fractions: Fractions: adding and subtracting, Fractions: 4 operations and Fractions: inverse (reciprocal). Each of them shows all sub-steps needed to compute common denominators, create improper fraction (if needed), reduce the fraction etc.

BMI
Calculator for finding out the BMI (Body Mass Index). Just enter your height and weight. The result is the BMI factor itself, but also the interpretation of the factor by WHO description (are you starving? or are you overweight?). It accepts metric units (centimeters and kilograms) or US-like units (feets, inches and pounds).
Some facts

• BMI (body mass index) also known as Quetelet index - is used to estimate a healthy body weight based on a person's height, assuming an average body composition.

• Body mass index is defined as the individual's body weight divided by the square of height.
The formula is:
BMI = m / h2
m - body mass [kg]
h - body height [m]
The BMI factor is generally used as approximation of body fat level.

• High BMI (overweight and obese) causes increased risk for many diseases and/or health conditions, including the following (according to wikipedia):

• Hypertension
• Dyslipidemia (for example, high LDL cholesterol, low HDL cholesterol, or high levels of triglycerides)
• Type 2 diabetes
• Coronary heart disease
• Stroke
• Osteoarthritis
• Sleep apnea and respiratory problems
• Some cancers (endometrial, breast, and colon)
• The BMI formula is simple: all inputs for the formula are just weight and height. It can be calculated quickly and without expansive equipment.
However BMI ignores many individual factors such as: frame size, muscularity, etc. It also ignores specific conditions of athlete, child, the elderly, the infirm, pregnant etc.
• BMI categories (according to BMI value):

• < 15 - starvation (very severely underweight)
• 15 - 17.5 - severely underweight
• 17.5 - 18.5 - underweight
• 18.5 - 25 - normal (BMI at desired level)
• 25 - 30 - overweight
• 30 - 35 - Obese Class I (moderately obese)
• 35 - 40 - Obese Class II (severely obese)
• > 40 - Obese Class III (very severely obese)

What is the meaning of each calculator field ?

• units - in first window, you can select the unit type. Do you want to put kilos and centimeters (most of the world)? or pounds and feet (uk/usa)?
• height - enter your height here, for example: 180.
• weigh - enter your weight here, for example: 70.
Results:

• BMI factor - at first place - the BMI number itself. The BMI displayed here is computed according to WHO standard formula.
• Which means - this is your BMI said in words. The description of your BMI is put here. For example: underweight.
• WHO classification table - all possible BMI classifications (according to WHO) are listed here. Your level is marked with special color.
How to use this tool

• Select which units type you want to use: metric (kilogrames and meters) or US-like (pounds, feet and inches).
• Then just put your height and weight into corresponding input fields.
• Read the resulting BMI factor. Read also the exact meaning of the factor from the table just below input fields.
 Do you want to enter centimeters & kilograms (metric)feet, inches & pounds (US-british like)

 Centimeters & kilograms(metric) height(centimeters) cm weight(kilograms) kg
 feet, inches & pounds(US-british like) height(feet & inches) feet & inches weight(pounds) pounds

 BMIBody Mass Index BMI factor Which means(according to WHO) WHO table position(World Health Organization)

Tags:
bmi · body_mass_index

Tags to Polish version:
bmi · otylosc