Calculator
Utilities
Tip splits, inflation adjustments, currency conversion, and password crack-time estimates.
A handful of single-purpose calculators that don't fit a financial category but are useful at the moment you need them — splitting a check, checking the real value of a dollar across years, converting currency for a trip, or testing how long a password would survive a brute-force attack.
Exchange Rate Calculator
Convert between 30 world currencies using live exchange rates from the European Central Bank. Free, fast, and accurate.
Inflation Calculator
Estimate purchasing-power erosion over time and compare nominal amounts against inflation-adjusted value.
Password Strength Calculator
Test password strength locally with entropy, effective-length penalties, and crack-time estimates across online and offline attack models.
Tip Calculator
Calculate tip amount, total bill, and per-person split with preset or custom tip percentages.