Body Mass Index or BMI Calculator Online

The Body Mass Index (BMI) Calculator can be used to calculate BMI value and corresponding weight status while taking age into consideration. Use the "Metric Units" tab for the International System of Units or the "Other Units" tab to convert units into either US or metric units. Note that the calculator also computes the Ponderal Index in addition to BMI, both of which are discussed below in detail.

Reference

BMI is a measurement of a person's leanness or corpulence based on their height and weight, and is intended to quantify tissue mass. Although BMI has limitations in that it is an estimate that cannot take body composition into account, it can be used as a general indicator of a healthy body weight based on a person's height. The value obtained from the calculation of BMI is widely used to categorize whether a person is underweight, normal weight, overweight, or obese depending on what range the value falls between. These ranges of BMI vary based on factors such as region and age, and are sometimes further divided into subcategories such as severely underweight or very severely obese. As previously mentioned however, due to a wide variety of body types as well as distribution of muscle, bone mass, and fat, BMI should be considered along with other measurements rather than being used as the sole method for determining a person's "healthy" body weight.

Body Mass Index Formula

Below are the equations used for calculating BMI in the International System of Units (SI) and the US customary system (USC) using a 5'10", 160-pound individual as an example:

USC Units: BMI = 703× mass (lbs) height2 (in)  = 703× 160 702  = 22.96 kg m2 SI, Metric Units: BMI =  mass (kg) height2 (m)  =  72.57 1.782  = 22.90 kg m2

Ponderal Index

The Ponderal Index (PI) is similar to BMI in that it measures the leanness or corpulence of a person based on their height and weight. The main difference between the PI and BMI is the cubing rather than squaring of the height in the formula (provided below). While BMI can be a useful tool when considering large populations, it is not reliable for determining leanness or corpulence in individuals. Although the PI suffers from similar considerations, the PI is more reliable for use with very tall or short individuals, while BMI tends to record uncharacteristically high or low body fat levels for those on the extreme ends of the height and weight spectrum. Below is the equation for computing the PI of an individual using USC, again using a 5'10", 160-pound individual as an example:

USC Units: PI =  height (in) ∛mass (lbs)  =  70 ∛160  = 12.89 in ∛lbs SI, Metric Units: PI =  mass (kg) height3 (m)  =  72.57 1.783  = 12.87 kg m3

 aa Adult BMI calculator based on 2013 AHA/ACC/TOS Guideline for the Management of Overweight and Obesity in Adults: A Report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines and The Obesity Society. BMI classification. World Health Organization. Adapted by Mayo Foundation for Medical Education and Research. Child BMI calculator based on clinical growth charts. Centers for Disease Control and Prevention. Adapted by Mayo Foundation for Medical Education and Research. Privacy assurance: Information that you enter won't be saved or sent to any website.

Scientific Calculator Online

Scientific calculator allows you to perform complex calculations using various trigonometric functions: sine, cosine, tangent, cotangent. Calculator can increase the number to a power, calculate the logarithm of the number. Basic commands (numbers, multiplication, division, addition, subtraction, equality, reset) can be entered using the mouse as well as using the numeric keypad (top or side). Detailed instructions for working with scientific calculator, see the bottom of the page.

0 sincostanDegRad sin-1cos-1tan-1πe xyx3x2ex10x y√x3√x√xlnlog ()1/x%n! 789+MS 456–M+ 123×M- 0.EXP÷MR ±RNDC=MC

powered by calculator.net

How to work with a scientific calculator:

• Functions of the standard buttons [ 0 ], [ 1 ], [ 2 ], ... [ 9 ] - standard numeric keypad; 
• [ 00 ] - key to enter the 2 zeros; 
• [ → ] - delete the last entered character is displayed; 
• [ +/- ] - changing the mathematical signs of the display on the opposite; 
• [ + ] - addition, 
• [ - ] - subtraction, 
• [ х ] - multiplication, 
• [ ÷ ] - division; 
• [ % ] - calculate interest; 
• [ M+ ] - stored in the memory with the sign [ + ] ; 
• [ M- ] - stored in the memory with the sign [ - ] ; 
• [ MR ] - get the contents of memory; 
• [ MC ] - clear the memory; 
• [ AC ] - reset the last value and clear the memory ; 
• [ C ] - reset the last digit of the; 

 Calculator buttons for performing trigonometric functions

• [ sin ] - sine of the angle, 
• [ cos ] - cosine of the angle, 
• [ tg ] - tangent of the angle, 
• [ ctg ] - cotangent of the angle; 
• [ asin ] - arc sine of the angle, 
• [ acos ] - arc cosine of the angle, 
• [ atg ] - arc tangent of the angle, 
• [ actg ] - arc cotangent of the angle; 
• [ π ] - mathematical constant, the ratio of the circumference to the diameter of the circle; 
• [ e ] - mathematical constant, the Euler number; 
• [ Xʸ ] - raise to higher power; 
• [ √ ] - square root; 

Examples of calculation of interest 
Calculation of percentage of the number of - 500 [ x ] 25 [ % ] Result - 125.
Deduction percentage of the number - 500 [ - ] 25 [ % ] Result - 375.
Adding percentage to the number - 500 [ + ] 25 [ % ] Result - 625.

Entering commands from the computer keyboard
To use the calculator you can use any keys: how keys are on top, and separate numeric keypad located on the right.

• To enter [ = ], you can use the [Enter]. 
• To erase the last character you can use the key to erase the last character [ Backspace ] (arrow keys). 
• To enter the sign [ + ] you can use either the [ + ] key at the top or press the [ + ] on the numeric keypad on the right. 
• To enter the sign [ - ] you can use either the [ - ] key at the top or press the [ - ] on the numeric keypad on the right. 
• To enter a [ x ] (multiplication) you can use the [ * ] key on the numeric keypad to the right or a combination of keys[ * ] and [ Shift ]. 
• To enter a [ ÷ ] (divide) you can use the [ / ] key on the numeric keypad to the right or a combination of keys [ : ] and [ Shift ].

F-Distribution

The F distribution calculator makes it easy to find the cumulative probability associated with a specified f value. Or you can find the f value associated with a specified cumulative probability. What are degrees of freedom? Degrees of freedom can be described as the number of scores that are free to vary. For example, suppose your friend tossed three dice, and the total score added up to 12. If your friend told you that he rolled a 3 on the first die and a 5 on the second, then you know that the third die must be a 4 (otherwise, the total would not add up to 12). In this example, 2 die are free to vary while the third is not. Therefore, there are 2 degrees of freedom. In many situations, the degrees of freedom are equal to the number of observations minus one. Thus, if the sample size were 20, there would be 20 observations; and the degrees of freedom would be 20 minus 1 or 19. What is f-value? An f value (also known as an f statistic) is a random variable that has an F distribution. Here are the steps required to compute an f value: Select a random sample of size n1 from a normal population, having a standard deviation equal to σ1. Select an independent random sample of size n2 from a normal population, having a standard deviation equal to σ2. The f value is the ratio of s12/σ12 and s22/σ22. Thus, f = [ s12/σ12 ] / [ s22/σ22]

Derivative Solver Calculator

The Derivative Calculator lets you calculate derivatives of functions online — for free! Our calculator allows you to check your solutions to calculus exercises. The Derivative Calculator supports computing first, second, .... fifth derivatives as well as differentiating functions with many variables (partial derivatives), implicit differentiation and calculating roots/zeros. You can also check your answers! Interactive graphs/plots help visualize and better understand the functions. How the Derivative Calculator Works For those with a technical background, the following section explains how the Derivative Calculator works. First, a parser analyzes the mathematical function. It transforms it into a form that is better understandable by a computer, namely a tree (see figure below). In doing this, the Derivative Calculator has to respect the order of operations. A specialty in mathematical expressions is that the multiplication sign can be left out sometimes, for example we write "5x" instead of "5*x". The Derivative Calculator has to detect these cases and insert the multiplication sign. The parser is implemented in JavaScript, based on the Shunting-yard algorithm, and can run directly in the browser. This allows for quick feedback while typing by transforming the tree into LaTeX code. MathJax takes care of displaying it in the browser. When the "Go!" button is clicked, the Derivative Calculator sends the mathematical function and the settings (differentiation variable and order) to the server, where it is analyzed again. This time, the function gets transformed into a form that can be understood by the computer algebra system Maxima.

Grade Point Average (GPA) Calculator

How to Calculate Your Grade Point Average (GPA)

Your grade point average (GPA) is calculated by dividing the total amount of grade points earned by the total amount of credit hours attempted. Your grade point average may range from 0.0 to a 4.0.

For example:

A = 4.00 grade points
A- = 3.70 grade points
B+ = 3.33 grade points
B = 3.00 grade points
B- = 2.70 grade points
C+ = 2.30 grade points
C = 2.00 grade points
C- = 1.70 grade points
D+ = 1.30 grade points
D = 1.00 grade points
D- = 0.70 grade points

WF/F=0 grade points

Pass or Not passed in the courses are not factored in the GPA calculation
I (Incompletes) and W (Withdrawals) also get zero grade points and therefore do not have any effect on the GPA.

Example Student Transcript
Course	Credit Hours	Grade	Grade Points
Biology Biology Lab English 101 Mathematics	3 1 3 3	A B C F	12 3 6 0
10 Total Credit Hours Attempted			21 Total Grade Points

To get the example student's GPA, the total grade points are divided by the total credit hours attempted.

Total Grade Points Total Credit Hours Attempted

divided by

21 10

= 2.10

You can total your current semester courses and credits with our online GPA Calculator (above).

To calculate your cumulative G.P.A., total the credit hours and then the grade points from all semesters. Divide the total grade points by the total credit hours. You can also use this online tool.

If you want to raise your GPA, an additional calculator helps you determine how many credit hours and what grade average you will need to raise your current GPA.

Source: Back2College

Percentage Calculator Online

Percentage Calculator is a free online tool to help you calculate percentages.

Enter values below and find out accurate percentages

What is % of ?

%

is what percent of ?

%

What is the percentage increase/decrease
from to ?

%

Hint: You can use "Tab" to move from one field to the next. Press enter to calculate.

Simple Graphing Calculator Online

About Graphing Calculator                                                                                            Source: Wikipedia

A graphing calculator (also graphics / graphic calculator) typically refers to a class of handheld scientific calculators that are capable of plotting graphs, solving simultaneous equations, and performing numerous other tasks with variables. Most popular graphing calculators are also programmable, allowing the user to create customized programs, typically for scientific/engineering and education applications. Due to their large displays intended for graphing, they can also accommodate several lines of text and calculations at a time.

Some of the more recent graphing calculators are capable of color output, and also feature animated and interactive drawing of math plots (2D and 3D), other figures such as animated Algebra theorems, preparation of documents which can include these plots and drawings, etc. This is giving the new graphing calculators a presence even in high school courses where they were formerly disallowed. Some calculator manufacturers also offer computer software for emulating and working with handheld graphing calculators.

Many graphing calculators can be attached to devices like electronic thermometers, pH gauges, weather instruments, decibel and light meters, accelerometers, and other sensors and therefore function as data loggers, as well as WiFi or other communication modules for monitoring, polling and interaction with the teacher. Student laboratory exercises with data from such devices enhances learning of math, especially statistics and mechanics.

Graphing calculators can be sub-divided into two categories (both need the graphical display):

1. Numerical (or just graphing) Calculators - non-CAS and producing numerical results, at most represented as a fraction. In some countries, graphing calculators are not permitted in high school science tests or certain basic math tests. See examples below.

2. CAS (or symbolic) Calculators - most advanced calculators capable of producing a symbolic result (in expression or equation form), usually utilizing a Computer Algebra System (CAS). Symbolic/CAS calculators are posing a challenge to high school and undergraduate educators. They can make math easier to learn for high schoolers, provided school curriculum evolves towards this advantage.[1][2] Testing based on tedious hand calculation is also being forced to evolve towards more creative testing.[3] Such tests are often more challenging and expensive to design and can't be recycled as much, but encourage a genuine deeper appreciation of the art of mathematics and critiqueing a fallacy. CAS calculators are therefore usually permitted only in select advanced math or calculus tests, thereby being more of a classroom learning tool for many users who then switch to a permitted and speedy numerical non-CAS graphing or scientific calculator for tests and exams.