Browse all pages and tools on ZivoLab
Discover all our free online tools and games
BMI, Age, Percentage calculators and more
Sudoku, 2048, Snake and other puzzle games
JSON Formatter, Base64, Color Converter and more
Calculate your Body Mass Index (BMI) and determine if you are in a healthy weight range.
Calculate your exact age in years, months, weeks, and days based on your birth date.
Calculate percentages, percentage increases, and decreases.
Classic number puzzle game. Fill the grid so each row, column, and 3x3 box contains digits 1-9.
Slide numbered tiles to combine them and reach the 2048 tile.
Classic snake game. Eat food to grow longer without hitting walls or yourself.
Format, validate, and beautify JSON data.
Encode and decode Base64 data.
Convert colors between HEX, RGB, HSL, and other formats.