Transparent formulas
Every calculator explains what is calculated and which assumptions affect the result.
Universal financial calculators
Simple calculators for savings, investing, loans and financial goals. The formulas stay the same in every country — you choose the currency and assumptions.
Live example
Compound growth
Starting amount
$10,000
Every month
$500
Estimated after 10 years
7% / year$106,639
Results update instantly as inputs change
Growing toolkit
We start with universal formulas and add each calculator as a focused, transparent tool.
Investing
Estimate future value with an initial deposit, monthly contributions and reinvested returns.
Open calculatorSavings
Find the monthly contribution required to reach a target amount by a chosen date.
Open calculatorLoans
Calculate a fixed monthly payment, total interest and the full cost of a loan.
Open calculatorLoans
Compare reducing the loan term with reducing the monthly payment.
Open calculatorPlanning
See how inflation changes purchasing power and the future cost of a financial goal.
Open calculatorInvesting
Calculate total return, annualized return and profit after contributions.
Open calculatorBuilt for clarity
Every calculator explains what is calculated and which assumptions affect the result.
No hidden tax or banking rules. Currency is a display choice, not part of the formula.
Inputs are processed in the browser and are not sent to a calculation server.