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The finance hub brings together calculators that turn money decisions into figures a reader can inspect: borrowing, saving, comparing returns, measuring inflation or planning repayment. A loan is not explained by its headline rate alone, because fees, insurance and term length change the total cost. A savings projection can look solid while real purchasing power barely improves after price rises. APR, borrowing capacity, compound interest, Livret A, inflation and rental yield each answer a different question about what money costs, earns or loses over time.
A small payment can come from a long term rather than a cheap loan. The loan, APR and borrowing calculators place principal, rate, charges and income beside one another so repayment comfort is separated from the actual price of the credit.
An accessible savings account serves a different purpose from a long horizon investment. Compound interest and retirement-style projections show how regular deposits, reinvested gains and waiting periods change the final balance.
A quoted return may remain positive even when prices rise quickly. Real-return calculations compare investment growth with inflation, helping readers see whether capital gained strength or merely followed the cost of living.
Credit-card balances, refinancing and debt snowball plans require more than a remaining balance. Useful comparisons reveal interest charges, payoff order and the effect of one extra payment on the end date.
Financial estimates become safer when they are checked against a loan agreement, amortisation table, bank fee sheet or tax note. Calcunia explains the mechanism; the binding document still defines the deal.
The nominal rate measures interest only. APR can include compulsory costs and timing effects, so it gives a closer comparison between loan offers that have different fees or insurance requirements.
If an account earns 4 % while prices rise by 3.5 %, the real improvement is small. The real return calculator focuses on purchasing power instead of the headline yield.
Borrowing capacity is the starting point because it uses income and existing charges. A loan calculator can then test the monthly payment and total interest for a specific amount.
Project your future wealth through disciplined contribution and time.
Calculate uncompounded interest earned or paid on a principal sum over time.
Calculate the monthly contribution required to reach your savings goal, visualize capital growth, and compare realistic optimization scenarios.
Calculate future value from capital, rate, duration and compounding frequency, with interest earned and growth scenarios.
Visualize periodic payments and the total cost of debt over time.
Analyze the total profitability and yield of capital investments.
Compute the smoothed annualized yield of an investment over a specified duration.
Instantly estimate how long it takes for a fixed-rate investment to double in value.
Calculate how your French Livret A savings account grows based on your initial capital, monthly deposits and duration. 2026 rate: 2.5%. Cap: €22,950.
Estimate your mortgage borrowing capacity based on income, existing debt, rate and duration. HCSF rule: debt ratio ≤ 35%.
Project your retirement capital based on age, contributions and expected return. Compare it with the capital needed for your target pension.
Calculate the impact of inflation on money: future cost, remaining purchasing power, real loss and scenarios over 5, 10, 20 or 30 years.
Calculate the real cost of your loan with APR: payment, interest, insurance, application fees, guarantee costs, amortization table and scenario comparison.
Plan the payoff order for several debts with avalanche, snowball or balanced strategy, extra payment, charts, schedule, total interest and debt-free date.
Compare your current mortgage with a refinance scenario: payment, real savings, fees, insurance, estimated APR, term change and break-even point.
Simulate credit card payoff time: minimum payment, fixed payment, accelerated payment, interest, fees, payoff date and potential savings.
Calculate the ideal safety reserve from essential expenses, risk profile, income stability and target months of coverage.
Measure the real impact of fees on investment growth: entry fees, management fees, exit fees, inflation, net return and final value after costs.
Calculate dividend yield for a stock: gross annual income, net income after estimated tax, yield on cost, projection, reinvestment and required capital.
Simulate recurring investments: total invested, accumulated units, average cost, projected value, potential gain, fees, inflation and return scenarios.
Calculate net worth with assets, debts, real estate, savings, investments, debt ratio, liquidity, productive assets and wealth projection.
Calculate real return after inflation, fees and recurring contributions: nominal value, real value, purchasing power, cumulative inflation and scenarios.
Simulate retirement savings withdrawals with available capital, monthly income, inflation, fees, tax estimate, portfolio duration and prudent scenarios.