Savings and Investment Calculators
How your money grows over time: compound interest, simple interest and inflation.
Compound Interest Calculator
Work out how your money grows with compound interest: enter the starting amount, the monthly contribution, the annual rate and the term, and see the future value with a year-by-year breakdown.
Open calculator →Simple Interest Calculator
Work out the simple interest on a capital sum: the interest is always calculated on the starting amount and never reinvested. Enter the capital, the annual rate and the term to see the interest and the final amount, compared with compound interest.
Open calculator →Inflation Calculator
See how much purchasing power your money loses to inflation: enter an amount, an average annual inflation rate and a term, and get the real value and the equivalent future cost.
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About the savings and investment calculators
These calculators estimate how your money evolves over time: the interest it earns, the contributions you add and the effect of compounding. They are for understanding orders of magnitude, not for predicting returns. Each one explains the formula it uses and links to the guide that develops the concept.
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The calculators provide educational estimates and do not constitute financial advice.