Follow invidion on Twitter
 
 

Interest Rate and Compound Interest Calculator / Solver.

 

Click here to launch the calculator

Use this calculator to work out Annual Percentage Rates, or perform calculations relating to loans and interest rates.

 
(Requires Flash Player 7 or higher).
 
You can use this calculator / solver to:
 
1. Work out the Annual Percentage Rate (APR) from a monthly rate of interest, or vice versa. (You can use change the interest period from monthly to daily, weekly, quarterly or half-yearly).
 
2. Work out the factors in Compound Interest Loan calculations, based upon three of the known factors. Therefore, you need to enter three of the following values:
 
  • Initial Value (i.e. the amount of money that is borrowed)
  • Interest Rate
  • The duration / length of the loan (in years)
  • The total amount of money that is repaid (i.e. initial value + interest)
 
Points to be aware of:
 
All results are rounded down to 4 decimal places, and this should be sufficient for most purposes. You can round this down further yourself (i.e. to 2 decimal places).
 
When enter 'part years' in the loan calculator (i.e. 7 years and 10 months), these need to be added as a fraction.
 
i.e. To work out 10 months as a decimal fraction, divide 10 by 12, and this gives the result 0.8 - therefore, enter 7.8 into the calculator. Any results calculated this way will also show the years and months underneath.
 
The figures projected by the calculator are only for guidance purposes - whilst we aim to ensure the accuracy of our calculators, we can take no responsibility for the usage made of the calculations generated on this site.
 
 
 
 
 
 

Recent Financial Topics

 

Mark Lewis and Nick Stapleton, hosts of Scam Interceptors, went undercover to reveal the tricks of scammers using deepfakes of Hollywood stars. Here they reveal how you can beat them...

How fake 'Reese Witherspoon' tried to cheat us out of thousands: She sent this convincing video and showed ID. But now we expose this devious new crime wave
22/04/2025 08:55 PM

Donald Trump's 'Liberation Day' tariffs imposed on April 2nd then subsequently watered down, shattered confidence in world trade.

Wall Street must speak up as Trump continues his attacks on Federal Reserve boss, says ALEX BRUMMER
22/04/2025 05:17 PM

Last year my wife Helen and I finally installed solar panels on our home, which means that sunny days boost our bank balance as well as my mood.

How I became a convert to solar panels - and made a profit on my electricity bill last month, by top financial expert SIR STEVE WEBB
22/04/2025 05:02 PM