This free loan payment calculator for Windows allows you to quickly calculate and compare loan payments based upon variable payment frequency! Offers Daily 365/year, Daily 360/year, Weekly, Biweekly 26/year, Bimonthly 24/year, Monthly, Quarterly, Biannual, and Annual payment periods. Free Loan Calculator is a financial calculator designed for 2000, XP and Vista systems. It offers integrated help, provides automatic hints, and offers Wheatworks' integrated Upgrade Center for easy, free, online updates. It allows you to compare two loans side-by-side and calculates Principal, Interest, Taxes and Insurance (PITI).