About this calculator
Typing speed test: retype the pangrams, WPM from correct chars over minutes with accuracy.
Annuity and differentiated monthly installments, interest breakdown, and amortization schedule.
Calculate PITI (Principal, Interest, Taxes, Insurance), PMI, and accelerated payoff savings.
Visualize compound growth with recurring deposits, annual rate, and investment horizons.
Add or extract Value Added Tax (VAT) with international country presets.
Analyze profitability and percentage return on business capital and investments.
Gross to net salary with income tax, social contributions and deductions, monthly and annual.
WPM and accuracy from retyping.
Typing speed test: retype the pangrams, WPM from correct chars over minutes with accuracy.
Correct characters ÷ 5 ÷ minutes — the standard word unit.
Starts on first keystroke; Stop freezes the result.
40 WPM is average; 70+ is professional territory.