`r = "AIR"/365`

Enter a value for all fields

The Daily Interest Rate calculator computes the daily interest rate based on an annual interest rate.

INSTRUCTIONS: Choose units and enter the following:

• (AIR) Annual Interest Rate

Daily Interest Rate (r): The interest rate is returned in U.S. dollars (USD).  However, this can be automatically converted to compatible units (other currencies) via the pull-down menu.

The Math / Science

The formula for Daily Interest Rate is:

r = AIR / 365

where:

• r = daily interest rate
• AIR = Annual Interest Rate