RandRoute · South African money tools
Interest Calculator
A quick way to see how the rate and time horizon change the outcome.
Calculator inputs
- Starting amount
- Interest rate
- Time period
- Growth type
How the calculator works
Enter the key inputs for interest calculator and compare the estimate with a different rate, term, or goal.
Example calculation
Use the default values as a worked example, then replace them with your own numbers to make the result useful.
Frequently asked questions
- How does the interest calculator work?
- Calculate simple or compound interest on a starting amount over time.
- Is this result guaranteed?
- No. It is an estimate for planning and education. Check the assumptions and confirm important decisions with your provider or adviser.
Related financial tools
Estimate only. Results are based on the information entered and applicable assumptions. Actual amounts may differ.