Simple interest (days)

Reverse solve elapsed days from principal, future value, and rate.

If calculation UI does not appear, reload with JavaScript enabled. Related context links below remain available.

FAQ

Who is this calculator for?

Reverse solve elapsed days from principal, future value, and rate.

What values should I enter?

Applies to: Simple interest / days = (FV/PV − 1) × basis ÷ r

How should I interpret this estimate?

This is an estimate based on public information.

How to use

  1. Enter your input values and press Calculate.
  2. Review the result and compare it with expected context.
  3. days = (FV/PV − 1) × basis ÷ r