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Perl & CGI » Scripts and Programs » Calculators


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  • Geozip - $74
    Geozip is a Perl program for calculating the distance between two zip codes in the United States. The sub-routines included in the code can be used to calculate any distance between latitude and longitude coordinates. The package includes data for the US, the script, including two sub-routines, one gets the coordinates and city name, the other calculates the distance between two points. The result should have a precision of about 50 meters, because the calculation takes into account the fact that the earth is not a perfect sphere. A great program to integrate into e-business solutions, dating sites, or just as it is as a service to your visitors. Update: Now with PHP/MySQL routines!
  • VeryInteresting Loan Payment Calculator - Free (linkware)
    VeryInteresting is a simple loan payment calculator. If a user enters a loan amount, an interest rate, the length of a loan, and the payment frequency, the calculator will show the monthly payment and the total interest that will be paid if the loan is paid to term. For monthly payments, it will also show an amortization table. Supports British Pound Sterling and Japanese Yen symbols as well as US Dollars.
  • AffordaBilly - Free (linkware)
    AffordaBilly is a simple interest loan calculator, focused on determining how large a loan the user can afford, given an interest rate, how large a payment they can make, and length of the loan in years. Users can choose monthly or bi-weekly payments. The results will show the maximum amount of a loan that the user can afford based on the monthly payment and interest rate.
  • PayBackTime - Free (linkware)
    Ever wondered how long it will take to pay off your credit card with those minimum payments? PayBackTime will tell you! This script is focused on determining how long it will take to pay off a loan or credit card, given a minimum payment, balance, and interest rate. The results will show the time it will take to pay off the balance with that monthly payment, number of payments, and the total interest the user will end up paying. For illustration purposes, it also shows the same data based on a bi-weekly payment of half the amount of the monthly payment.
  • Just Bring It Home Calculator - Free
    A calculator written in perl that does Addition, Multiplication, Subraction, Division, and Exponents. The script includes a simple 3 page and cgi file format. There is a html page explaining the calculator, a html page where the user enters the sum and the template file which ouputs the data.
  • - Free
    A calculator written in perl that does Addition, Multiplication, Subraction, Division, and Exponents. Includes an html form, the file, and documentation. Small download and simple installation.
  • Dish-Calculator - Free
    This Perl script allows you to calculate the reflection-centrum of a parabolic dish. Once you enter radius and height of a parabolic dish in mm, it calculates its reflection-centrum.
  • Fatalyzer - Free
    This CGI script allows your visitors to calculate their percentage of body fat based on various skinfold measurements. This is a great way to add content to your health or fitness web site. The accuracy of skinfold bodyfat testing is largely based on the accuracy of the measurements and calipers are recommended.
  • The Fluid Flow Calculator - Free
    This calculator is used to calculate pipe friction losses for straight piping handling water and water with varying percentages of ethylene glycol. The calculator uses an algorithm developed from the basic principles of fluid mechanics. This calculator allows the user to input the fluid type, the fluid temperature, the flow rate, the pipe size, pipe length, and pipe material. The calculator then determines the velocity, the Reynolds number, the Moody friction factor, the pipe friction factor, the pipe head loss, and the pipe friction loss in PSI.
  • The Engineering Units Conversion Calculator - Free
    This program allows users to convert units such as: Energy, Pressure, Volume, Density, Specific Volume, Specific Heat (Entropy), Enthalpy, Viscosity (absolute), and Coefficient of Heat Transfer.
  • Quadratic-O-Matic - Free

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