Free Online Tools

Calculate percentages, percentage change, and percentage difference instantly with our free online tool.

Calculate your exact age in years, months, and days. Find the time between two dates quickly.

Calculate your GPA on a 4.0 scale. Supports weighted and unweighted grade point averages.

Format, validate, and beautify JSON data online. Minify or pretty-print with syntax highlighting.

Count words, characters, sentences, and paragraphs in your text. Estimate reading time instantly.

Calculate IP subnets, CIDR notation, network ranges, and available hosts for IPv4 addresses.

Encode and decode Base64 strings online. Supports text and file encoding with instant results.

Generate printable math worksheets for addition, subtraction, multiplication, and division practice.