Calculate interest
Principal
Annual interest rate (365)%
Deposit days
Interest income
Calculate annualized yield
Principal
Deposit days
Interest income
Annual interest rate (365)%

What is the annual interest rate?

The annual interest rate is the deposit rate for one year. Interest rate, short for rate of interest, is the ratio of interest over a period to the deposit or loan principal. It is usually divided into annual, monthly and daily rates. The annual rate is shown as a percentage of the principal, the monthly rate as a per-thousand and the daily rate as a per-ten-thousand.

Recently used:

How to use

This tool belongs to the “Calculators & converters” category.

  1. 1Type the value and check the unit the field is labelled with.
  2. 2Pick the target unit or formula; common equivalents are shown alongside.
  3. 3Round to the precision you need — results keep several significant decimals by default.

Your input is processed locally in the browser whenever possible. We do not store it.

Frequently asked questions

Any precision loss?

Decimal conversions of binary storage differ in the last digits. Use a proper maths package for engineering work.

Is data size 1000 or 1024?

Both conventions are shown; the difference is the KiB/KB and MB definitions.

Can I rely on the loan calculator?

It demonstrates the annuity formula only. Actual costs follow your bank or contract.