Estimate loans, mortgage payments, compound interest, savings, investments, ROI and other common financial calculations.
Financial planning maths is straightforward once you see the formulas — but errors are expensive.
This hub groups loan amortisation, compound growth, ROI, discounts, tax and AdSense revenue estimation with transparent calculations.
Loan Calculator applies the standard amortising formula so you can compare monthly payment, total payable and total interest across home, personal, car and business scenarios. Compound Interest Calculator projects savings growth with any compounding frequency and a year-by-year table. ROI Calculator reports return on investment as both percentage and absolute profit.
Discount Calculator and Tax Calculator cover everyday shopping and invoicing maths. AdSense Earnings Calculator estimates publisher revenue from pageviews, CTR and CPC — with an explicit disclaimer that figures are estimates, not guarantees.
All finance tools run locally. You can model scenarios involving real numbers without signing up or sharing account details with a server.
7 tools
Project savings growth with compounding interest over time.
Compute sale prices and savings from a discount percent.
Build a clean invoice from line items with tax totals — copy or download it, free and private.
Estimate monthly loan payments, total payable and total interest.
Add or remove sales tax worldwide — US states, Canadian provinces, EU/UK VAT, GST and more. Pick a region — the standard rate fills in and stays editable — or stack your own rows with +. Shows the CGST/SGST split for India.
Estimate ad revenue from pageviews using CTR and CPC, or RPM — in USD, EUR, GBP, INR and 8 more currencies. A planning estimate, not a forecast.
Measure return on investment from gain and cost.
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