CALCULATORS

These CALCULATORS perform various functions:

Find out what day of the week a certain date falls on.

Year

Enter the two numbers to determine the percent of increase.

to

The percentage of increase is

Enter the circle area, diameter, or circumference and it will solve for the other two values.
 Area: Diameter: Circumference:

Enter the X-Y coordinates for a function and this script will give you the graphing formulas, including Formula, Slope, Y-intercept, Parallel and Perpendicular lines.
Enter coordinate values:
 X1: Y1: X2: Y2: Formula: Slope: Y-Intercept: Parallel Line Formula: Perpendicular Line Formula:

Ever had to work with another person to complete a task?  This calculator will tell you how long it would take two people to complete the task if you know how long it would take each person to complete the task individually.
Person one can do the job in hours.
Person two can do the same job in hours.
Together, they can do the job in hours.

One of geometry's most useful formulas, the Pythagorean Theorem, can be applied to the numbers you enter in JavaScript!  Just enter 'A' and 'B' and the script solves for 'C.'
The Pythagorean Theorem

( a2 + b2 = c2 )

2 + 2 =

This script will print the date a certain number of days in the future.

Just enter your height and your weight, and JavaScript can use a formula created by the Panel on Energy, Obesity, and Body Weight Standards to figure out your Body Mass Index.  This index classifies you into one of several categories, from underweight to desirable to obese.
 Weight: lbs. Height: Ft. In. Body Mass Index According to the Panel on Energy, Obesity, and Body Weight Standards published by American Journal of Clinical Nutrition, your category is:

Calculators

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