Finance & Math
Calculators for mortgages, loans, tax, compound interest, VAT/GST, and more. All arithmetic runs client-side; financial inputs are never transmitted.
Mortgage Calculator
Calculate your monthly mortgage payment instantly. Enter home price, down payment, rate and term — get your payment breakdown and yearly amortisation schedule.
Open tool FreeInflation Calculator
See how inflation has changed the value of money over time. Enter any US dollar amount and two years (1913–2024) to get the inflation-adjusted equivalent, cumulative rate, and buying power comparison.
Open tool FreePercentage Calculator
Calculate any percentage instantly — find X% of Y, work out what percent one number is of another, calculate percentage increase or decrease, and add or subtract percentages from values.
Open tool FreeSalary & Tax Calculator
Estimate your take-home pay instantly. Enter your salary, filing status, and state to see federal income tax, FICA, state tax, and net pay — free, no sign-up, nothing leaves your browser.
Open tool FreeLoan Amortization Calculator
Generate a full loan amortization schedule for any fixed-rate loan. Enter loan amount, rate, and term to see monthly payment, total interest, and a year-by-year breakdown — free, nothing stored.
Open tool FreeTip Calculator
Calculate the right tip and split the bill between any number of people. Pick 10–25% or enter a custom rate — totals update instantly. Free, no sign-up, nothing leaves your browser.
Open tool FreeCompound Interest Calculator
Calculate how your savings or investment grows with compound interest. Set an initial amount, add monthly contributions, choose compounding frequency, and see your future value with a year-by-year schedule — free, nothing uploaded.
Open tool FreeVAT / GST Calculator
Add or remove VAT and GST from any price instantly. Supports 12 country presets — UK, EU, Australia, India, Singapore and more — plus custom rates and any currency. Free, no sign-up, nothing leaves your browser.
Open tool FreeUnit Converter
Convert between hundreds of units across eight categories — length, weight, temperature, volume, area, speed, time, and data. Results update as you type. Free, no sign-up, nothing leaves your browser.
Open toolWhy trust our Finance calculators
- Calculations follow standard financial formulae (amortization, FICA, CPI)
- All arithmetic runs client-side in JavaScript — inputs are never transmitted
- No account, no email, no tracking
- Results are estimates; always consult a qualified professional for financial decisions