The Best Free Online Tools – Calculators, Converters, Generators & Editors
Welcome to The Burujan Tools — your all-in-one destination for 30+ free online toolsthat work right in your browser. No sign-up, no downloads, no data collection. Every tool runs 100% locally using your device's processing power, so your data stays completely private.
Free Online Calculators
Use our GPA calculator to compute your grade point average on the 4.0 scale for high school or college. Check your health with our BMI calculator — supports metric and imperial units. Solve everyday math with the percentage calculator (percentage of a number, increase, decrease, difference). Plan dining expenses with the tip calculator and bill splitter. Find your exact age in years, months, and days with the age calculator.
Image Tools & Photo Editors
Compress images online to reduce file size by up to 80% without visible quality loss. Resize images with presets for Instagram, YouTube, and 1080p. Convert images between PNG, JPG, and WebP. Crop photos to 1:1, 16:9, 4:3, or custom dimensions. Apply 14 professional photo filters and effects. Remove image backgrounds instantly — all 100% browser-based, no server upload.
Developer & Coding Tools
Format and validate JSON with syntax highlighting and minification. Test regular expressions with real-time matching and preset patterns. Generate SHA-256, SHA-512, and SHA-1 hashes using the Web Crypto API. Encode and decode Base64 strings. Preview Markdown with a live side-by-side editor. Convert Unix timestamps to human-readable dates. Generate beautiful CSS gradients visually.
Security, Productivity & Utility Tools
Generate cryptographically secure strong passwords. Create scannable QR codes for any text or URL. Count words and characters with reading time estimation. Convert text case between 11 formats. Create professional invoices with PDF export. Stay focused with the Pomodoro timer. Pick colors and get HEX, RGB, HSL values. Convert between units of length, weight, temperature, and more.
Complete List of Free Online Tools
- GPA Calculator — Calculate your GPA instantly with our free online GPA calculator.
- Age Calculator — Find out your exact age in years, months, and days with our free online age calculator.
- Percentage Calculator — Calculate percentages instantly with our free online percentage calculator.
- BMI Calculator — Calculate your Body Mass Index (BMI) with our free online calculator.
- Word Counter — Count words, characters, sentences, and paragraphs instantly with our free online word counter.
- Image Converter — Convert images between PNG, JPEG, and WebP formats instantly in your browser.
- Password Generator — Generate strong, secure passwords instantly.
- JSON Formatter — Format, beautify, minify, and validate JSON data instantly.
- Color Picker — Pick any color and get HEX, RGB, HSL values instantly.
- Unit Converter — Convert between units of length, weight, temperature, area, volume, speed, time, and digital storage instantly.
- QR Code Generator — Generate QR codes for any text or URL instantly.
- Base64 Encoder — Encode text to Base64 or decode Base64 strings instantly.
- Text Case Converter — Convert text between UPPERCASE, lowercase, Title Case, camelCase, snake_case, kebab-case, and more instantly.
- Lorem Ipsum Generator — Generate lorem ipsum placeholder text by words, sentences, or paragraphs.
- CSS Gradient Generator — Create stunning linear, radial, and conic CSS gradients with a visual editor.
- Markdown Previewer — Write Markdown and see a real-time preview side by side.
- Timestamp Converter — Convert Unix timestamps to human-readable dates and vice versa.
- Regex Tester — Test and debug regular expressions with real-time matching, highlighting, and match details.
- Hash Generator — Generate SHA-256, SHA-384, SHA-512, and SHA-1 hashes from any text.
- Invoice Generator — Create professional invoices with itemized billing, tax calculation, and PDF export.
- Tip Calculator — Calculate tips and split bills between multiple people instantly.
- Pomodoro Timer — Boost productivity with the Pomodoro Technique.
- Emoji Picker — Browse and copy emojis by category.
- Text Diff Checker — Compare two texts side by side and see additions, removals, and changes highlighted.
- Image Resizer — Resize images to any dimension with presets for social media, web, and print.
- Image Compressor — Compress images to reduce file size without losing visible quality.
- Image Cropper — Crop images with custom dimensions or preset aspect ratios like 1:1, 16:9, 4:3.
- Image to Base64 — Convert any image to a Base64 data URI string for embedding directly in HTML, CSS, or JSON.
- Image Filters — Apply professional photo filters and adjustments like grayscale, sepia, vintage, dramatic, blur, and custom brightness/contrast/saturation.
- BG Remover — Remove image backgrounds instantly in your browser.
Why Choose The Burujan Tools?
Every tool is completely free with no account required. All processing happens locally in your browser using JavaScript and the Web APIs — your data never leaves your device. Our tools are fully mobile-responsive, work on any screen size, and load instantly with no server round-trips. Whether you're a student, developer, designer, freelancer, or anyone who needs fast online tools — we've got you covered with 30+ purpose-built utilities.