Enter the number of teams in your tournament and JavaScript will output the appropriate single-elimination playoff chart. Just print it out and fill it in to track your tournament. Enter the mother's pregnancy information into this calculator and JavaScript will provide an estimated conception date, birth due date, and an estimated current fetal age. Enter a number and JavaScript can instantly tell you if it is a prime number or not. Solves quadratic equations for inputted coefficients.
Answers can be either real or complex.
Uses the normal law of error to determine an events given probability. Use JavaScript to find the approximate room size you'll need depending on your room setup and arrangement. A simple function to round a decimal number to any number of decimal places you want just by passing it different values. Allows runners to calculate their time, distance covered, or pace by entering the other two values. Distance and pace can be converted between various measurements.