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Investing and savings calculators

Simple, honest calculators to help you plan your savings and investments, including fees and inflation.

Compound interest calculatorSee how a lump sum and monthly savings grow with interest on interest.Open calculator →Monthly investing calculatorProject regular monthly investments under lower, middle and higher returns.Open calculator →Investment fees calculatorFind out how much a yearly fee really costs you over 10, 20 or 30 years.Open calculator →Savings goal calculatorWork out how long a goal will take, or how much to save each month.Open calculator →

Plan with realistic numbers

These calculators are built to show honest ranges rather than optimistic single figures. They include fees and inflation, because both quietly make a big difference over time. Every calculator works in pounds, dollars or euros, and nothing you enter is sent anywhere: the maths runs in your browser.

Where to start

New to investing? Start with the monthly investing calculator to see what regular saving could grow to. Already investing? The fees calculator shows whether you're paying more than you need to. Saving for something specific? The savings goal calculator gives you a monthly target and a date.

These calculators are for illustration and education only. They use the figures you enter and assume a steady rate of return, which real investments never deliver: values go down as well as up, and you may get back less than you put in. Nothing here is financial advice. For advice about your own situation, speak to a regulated financial adviser.