New: the student classroom — explore compound interest, growth and depreciation, and regular savings with step-by-step investigations.
Free calculators, formulas and templates
Compound interest calculators, formulas and tables.
Calculate future values, compare simple and compound interest, copy Excel formulas and download useful tables without needing an account.
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Saving towards a specific amount? Find the monthly saving needed to reach your goal.
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Understand the numbers behind compound growth.
Use the calculators for quick answers, then read the formula, Excel guide, examples and tables to understand how the result is produced.
Home page FAQ
Quick answers
Yes. The calculators and guides are free to use.
No. The calculators run without sign-up.
Yes. The main calculator can export CSV and genuine Excel workbooks. A matching Excel formula is available for supported settings.
No. They are educational tools and estimates only.
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