Compound Interest Calculator — Savings Growth Free
See how savings grow with compound interest — enter principal, annual rate, years and compounding frequency to get the final amount.
Compound Interest Calculator
See how savings grow with compound interest — principal, rate, years and compounding frequency.
- Final amount
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- Interest earned
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- Growth
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How to use it
- Enter the principal, annual rate and years.
- Choose how often interest compounds.
- Tap “Calculate” to see the final amount and interest earned.
Frequently asked questions
What is compound interest?
Interest earned on interest: each period's interest is added to the balance, so growth accelerates over time.
Monthly or yearly compounding?
Monthly grows slightly faster than yearly at the same rate, because interest starts earning interest sooner.
What is the formula?
A = P × (1 + r/n)^(n×t), where n is compounds per year and t is years.
Is this financial advice?
No — it is a calculator. Real returns vary with rates, taxes and fees.
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