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Available Calculators

The following calculators come with the PentaCalc Pro software package allowing you to do a wide array of calculations.



Tired of switching back and forth between your computer and a cumbersome 10-Key? Now you can replace your 10-Key altogether with PentaCalc Pro. All calculations are saved on the tape for future reference. Edit the tape and everything is automatically recalculated. Includes an item counter, 3 rounding options, red negative entries, and all the standard functions you are used to. You can even make annotations.

Scientific, Financial, & Unit Conversions

Scientific Calculator for Windows

Perfect for students, scientists, and engineers who require the highest performance and exceptional power from their desktop calculator.


Every business needs to markup on cost and price, find the percent of total, and calculate interest rate conversions. PentaCalc Pro can perform these, and many other business calculations, quickly and accurately! Features include time value of money calculations, cash flow calculator function, as well as unit conversion calculator options.


Bond Calculator

Analyze every type of bond, bill and note you wish, including discounted notes, municipal and corporate bonds, and Treasury bills.


Depreciation Calculator Tools

Generate depreciation tables for your fixed assets quickly and effortlessly using declining balance, sum-of-the-year’s digits, and straight-line methods.

time value

Time Value of Money Calculations

Helps you plan for retirement, save for your child’s college education, make long-term budget plans, figure the impact of refinancing your home, etc. You can also create and print amortization tables.

cash flow

Cash Flow Calculator 

Analyze those complex real estate deals and capital investments by computing IRR, NPV, BUS, and NFV.


Unit Conversions

Never again will you have to make time-consuming calculations to cross out units! PentaCalc Pro converts between hundreds of units instantly. It combines, cancels, and simplifies for you. Over 45 unit calculators are already included, and you can also create your own.

Programming & Statistics



PentaCalc Pro offers the strongest programming calculator on the market! You can easily emulate calculations done internally by computers for use in double-checking, coding, and debugging.


Statistics Calculator

Is your advertising paying off? How about the amount you spend in research and development? Find the answer to these, and many other questions, using PentaCalc Pro’s statistics calculator.


Windows Graphing Calculator

Want to add a little life to your calculations? PentaCalc Pro will graph any one-variable function instantly. You can even print or copy the graph to spice up your next report or presentation.