This calculator will help you figure out your regular loan payments and it will also create a detailed schedule of payments. A biweekly amortization schedule is a table that details your loan payments every two weeks instead of the traditional monthly payment schedule.Loan amortization schedule. 3. 4, Enter values, Loan summary. I'm looking for a Biweekly Loan Amortization Schedule that will allow me to input various additional payments depending on ability. Use our amortization calculator, type in a dollar figure under "Loan amount.