Convert colors between HEX, RGB, HSL, HSV, CMYK, XYZ, and LAB formats. Bi-directional conversion with live color preview as you type.
Convert between decimal numbers and Roman numerals instantly. Supports numbers from 1 to 3,999,999 with proper notation and random number generation for practice.
Calculate monthly payments, total interest, and view a full amortization schedule for any loan. Supports fixed-rate mortgages, auto loans, and personal loans.
Track live cryptocurrency prices, view 7-day sparkline charts, and convert between crypto and fiat currencies. Powered by the free CoinGecko API — no API key needed.
