Calculators

Free and interactive. Move the sliders, see the chart and the year-by-year numbers, then ask the chat to build a version for your own situation.

Savings and investing

See how a lump sum and monthly deposits grow with interest on interest.

15 ready-made examples

How much to save each month to reach a target by a date, with interest.

12 ready-made examples

Compare the two side by side and see how much compounding adds over time.

10 ready-made examples

What an amount will cost or be worth after years of inflation at a steady rate.

12 ready-made examples

How long until your savings can cover your yearly spending, using a withdrawal rate.

12 ready-made examples

Monthly payment, total interest and balance over time for a car loan, mortgage or personal loan.

12 ready-made examples

How long a fixed monthly payment takes to clear a credit card or loan, and the interest on the way.

12 ready-made examples

How many sales a month cover your fixed costs, for a shop, a service or a small online business.

12 ready-made examples

Add VAT to a price, or take it out of a price that already includes it.

13 ready-made examples

Return on investment, and the yearly rate it works out to.

12 ready-made examples

The hourly rate you need to charge to take home a target income after costs, tax and time off.

12 ready-made examples

What is X percent of a number, and the number plus or minus that percent.

20 ready-made examples