Free financial calculator
Compound Interest Calculator
See how a starting amount, monthly additions and time can combine through compound growth.
Use the calculator ↓Adjust the assumptions
Compound Interest Calculator
See how a starting amount, monthly additions and time can combine through compound growth.
Result
£0
View year-by-year breakdown ＋
| Year | Contributions | Growth | Balance |
|---|
Questions answered
What this calculator helps you work out
- How much could my money grow through compound interest?
- What difference do monthly contributions make?
- How much of the final balance is interest rather than deposits?
Common questions
Compound Interest Calculator FAQs
What is compound interest?＋
Compound interest is growth earned on both the original money and the interest already added.
How often does this calculator compound?＋
It uses monthly compounding to align with the monthly contribution input.
Why does time matter so much?＋
More time creates more opportunities for previous growth to produce further growth.