7 free calculators
Finance
Estimate borrowing, taxes and long-term investment growth.
Tools in this category
Loan Calculator
Estimate monthly payments, total payment and total interest.
Mortgage Calculator
Estimate a mortgage payment from price, down payment, rate and term.
Compound Interest Calculator
Project investment growth with monthly compounding.
Simple Interest Calculator
Calculate simple interest and final balance without compounding.
VAT Calculator
Add VAT to a net amount and see the tax breakdown.
Debt-to-Income Calculator
Compare recurring monthly debt payments with gross monthly income.
Savings Goal Calculator
Estimate how many months regular contributions need to reach a savings target without interest.
Understand the calculations
Use these focused guides and worked articles to check formulas, assumptions and practical examples.
Continue exploring
Finance
Understand the formula
These are the actual formulas used by the linked tools.
M = P × r(1+r)ⁿ ÷ ((1+r)ⁿ − 1)
T = N × r ÷ 100 · G = N + T
FV = P × (1+r)ⁿ + PMT × ((1+r)ⁿ − 1) ÷ r
Finance
See the numbers in practice
Use these worked examples as a reference before entering your own values.
P = €250,000 · r = 4.5% ÷ 12 · n = 20 × 12 = 240
€100 × 20% = €20 · €100 + €20 = €120
P = €10,000 · r = 6% ÷ 12 · n = 10 × 12 · PMT = €200
Finance
Compare your scenarios
Keep your starting values, change one input and calculate again. Record both results to see which assumption makes the difference.
Loan Calculator