The Per Diem Calculator is designed to help users calculate the daily interest (per diem) rate and amount for a loan based on an annual interest rate and principal amount. It offers two modes: Basic Calculation for direct per diem estimates and Advanced Calculation for calculating custom daily interest rates over a specified number of days.

Per Diem Calculator

Enter the annual interest rate in percentage to calculate the per diem rate and amount.

Provide the principal loan amount in dollars for which the per diem is calculated.

This field will display the per diem rate in percentage. Leave it blank to calculate.

This field will display the per diem interest amount in dollars. Leave it blank to calculate.

Enter the annual interest rate in percentage to calculate custom per diem values.

Provide the principal loan amount in dollars for which the per diem is calculated.

Enter the number of days for which the interest should be calculated.