Free online tools that just work

Convert text between different cases: UPPERCASE, lowercase, Title Case, and more.

Search and replace text with powerful options including regex support, case sensitivity, and match highlighting.

Write Markdown with a live preview, a formatting toolbar, word counts, and one-click export to HTML or a .md file. Supports GitHub-Flavored Markdown — tables, task lists, and code highlighting.

Paste SVG code or upload an SVG file to preview it live, then validate, prettify, minify, and download. Works both ways — code to file and file to code.

Convert between pixels and ems bidirectionally. Perfect for responsive web design and CSS typography.

Convert between pixels and rems bidirectionally. Perfect for responsive web design and modern CSS typography.

Convert between pixels and percentages based on container width. Perfect for responsive layouts and CSS grid systems.

Convert between pixels and points. Perfect for print design, typography, and design software compatibility.

Convert between pixels and inches. Perfect for print layouts, physical design specifications, and design software.

Convert between pixels and viewport width units (vw). Perfect for responsive design and fluid layouts.

Convert between pixels and viewport height units (vh). Perfect for responsive design and full-height layouts.

Format, validate, and beautify JSON data with syntax highlighting, minification, error detection, and file handling.

Minify and compress CSS code with optimization, validation, statistics, and file handling for better web performance.

Format, prettify, and validate HTML code with minification, SEO analysis, accessibility checks, and file handling.

Encode and decode URLs and query parameters with component breakdown, validation, and batch processing.

Convert between HEX, RGB, HSL, HSV color formats with color picker, palette generation, and accessibility tools.

Generate SHA1, SHA256, SHA384, SHA512 cryptographic hashes with file support, HMAC, verification, and batch processing.

Calculate the sum of digits in a mobile number. Useful for numerology, pattern analysis, and mathematical calculations.

Calculate exact age, time until next birthday, and various time-related statistics. Perfect for planning, documentation, and personal calculations.

Detect your screen resolution, convert between units, calculate aspect ratios, and get responsive breakpoints. Essential for developers and designers.

Simple calculator to determine expiry dates based on purchase date and shelf life. Supports multiple time units and date formats for easy calculation.

Calculate cashback rewards, annual savings, and compare different cashback rates. Perfect for credit cards, shopping rewards, and financial planning.

Calculate GST amount, total price, and tax breakdown for goods and services. Supports multiple GST rates and reverse calculation.