All Free Online Tools

Calculate your exact age in years, months, days, hours, and minutes from your date of birth. Free online age calculator with detailed breakdown.

Encode text into Base64 format or decode Base64 data back to clear readable text. Perform local client-side conversions instantly.

Convert plain text to binary code format and translate binary strings back to human-readable text. Supports customized byte separators client-side.

Calculate your Body Mass Index (BMI) instantly. Supports both metric (kg/cm) and imperial (lbs/ft) units with WHO health category classification.

Calculate the Compound Annual Growth Rate (CAGR) of your investments over multiple years easily and client-side.

Convert your text between UPPERCASE, lowercase, Title Case, sentence case, camelCase, and snake_case instantly.

Convert color values between HEX, RGB, HSL, and CMYK formats. Adjust colors using an interactive color picker client-side.

Calculate how your investments grow over time with compound interest. Supports periodic additions and flexible compounding frequencies.

Generate, validate, and understand crontab scheduling expressions. Build cron jobs visually with human-readable descriptions client-side.

Calculate your cryptocurrency investment profits, transaction fees, break-even price, and return on investment (ROI) instantly.

Compare two text blocks side-by-side or inline to highlight additions, deletions, and modifications instantly and locally.

Calculate your monthly EMI for home loans, car loans, and personal loans. Free online EMI calculator with amortization schedule.

Merge multiple Excel files (.xlsx, .xls, .csv, .ods) or sheets into a single spreadsheet client-side. Fast, secure, and preserves column details.

Convert Excel files (.xlsx, .xls, .ods, .csv) into structured JSON arrays client-side. Fast, secure, and supports custom sheet selection.

Convert PNG or JPG images to standard multi-resolution ICO favicon files client-side.

Calculate Fibonacci retracement and extension levels for financial assets. Support both uptrends and downtrends mapping.

Calculate your Grade Point Average (GPA) instantly. Add custom courses, configure credits, and translate letter grades client-side.

Compute secure cryptographic hashes for your text strings. Generate SHA-1, SHA-256, SHA-384, and SHA-512 checksums instantly using native Web Crypto.

Generate custom .htaccess redirect rules for Apache servers. Support 301/302 redirects, HTTPS enforcement, and www/non-www rewrites instantly.

Encode special characters into HTML entities or decode entities back to standard text. Prevent HTML injection and display symbols correctly.

Upload an image, pick exact colors from its pixels visually, inspect HEX, RGB, HSL values, and maintain a history of sampled colors.

Convert images between standard formats (PNG, JPEG, WebP, GIF, BMP) client-side. Fast, safe, and works offline.

Crop and resize your images visually with custom aspect ratios completely client-side.

Resize image dimensions and compress file size client-side. Adjust size scaling, quality compression, and preview before/after storage sizes.

Calculate the purchasing power of money over time and estimate cumulative inflation rates client-side.

Format, beautify, minify, and validate JSON data instantly. Highlight parsing errors and copy the clean output with one click.

Minify and compress your JSON data client-side. Remove whitespaces, line breaks, and indentation to reduce file sizes.

Convert structured JSON arrays or CSV data into formatted Excel (.xlsx) workbooks client-side. Validate syntax and download instantly.

Decode JSON Web Tokens (JWT) instantly. Inspect the header, payload data, and token metadata securely inside your browser.

Analyse the keyword frequency and density of your text. Optimise your content by checking single words, 2-word, and 3-word phrases instantly.

Generate custom placeholder dummy text. Select paragraphs, sentences, or lists formatting options instantly.

Convert Markdown syntax into clean HTML code instantly. Support headings, bold, italic, lists, links, blockquotes, and live visual previews.

Create customized memes online client-side. Add top/bottom text overlays with custom font sizing, alignment, colors, outlines, and download instantly.

Create SEO-optimised HTML meta tags for your website. Generate Google search previews, Facebook Open Graph, and Twitter card tags instantly.

Translate plain text to Morse code or decode Morse code audio signals back to text. Play back your Morse codes using local AudioContext oscillators.

Generate strong, secure, and customizable random passwords or passphrases client-side. Protect your accounts with high-entropy keys.

Merge multiple PDF files into a single document client-side. Reorder pages and files before joining them, 100% securely.

Split pages from a PDF document and extract selected page ranges client-side. Fast, zero-server uploads, and secure.

Calculate percentages instantly — find percentage of a number, percentage change, percentage difference, and more.

Calculate key pivot points for trading. Support Standard, Camarilla, Woodie, and DeMark systems instantly.

Calculate your optimal trading position size and risk per trade. Supports stock, forex, and cryptocurrency risk management parameters.

Convert pixels (PX) to relative REM or EM units and vice versa. Adjust body font sizes to match CSS responsive designs instantly.

Generate QR codes instantly from URLs, text, emails, phone numbers, and more. Download or share your QR code in seconds — no signup required.

Create a valid, SEO-friendly robots.txt file to guide search engine crawlers. Set custom rules, crawl delays, and specify your sitemap instantly.

Calculate the Return on Investment (ROI) and annualized ROI for any business project or financial asset instantly.

Convert your salary into equivalent hourly, daily, weekly, bi-weekly, monthly, and annual income rates instantly. Adjust for working hours and days.

Calculate sales tax or Value Added Tax (VAT) additions or removals from gross or net pricing parameters instantly.

Generate JSON-LD structured data schema markup for your pages. Support Article, FAQ, Local Business, and Product schemas instantly.

Perform advanced mathematical operations including trigonometry, logarithms, power indices, and formulas client-side with a complete responsive interface.

Calculate future returns and accumulated wealth of your Systematic Investment Plans (SIP) instantly and client-side.

Generate standard XML sitemaps from a list of URLs with customizable priorities and change frequencies client-side.

Convert plain text or rich formatted text into a custom styled PDF document instantly. Adjust margins, page sizes, and fonts client-side.

Calculate custom tip amounts and split restaurant or event bills evenly among multiple people. Fast and secure.

Convert between different units of measurement including Length, Weight, Temperature, and Area instantly and locally.

Encode or decode text into URL-friendly format instantly. Support standard percent-encoding and full URI-safe encoding modes client-side.

Convert any text string into a clean, SEO-friendly URL slug. Support lowercase conversion, space replacement, and special character stripping.

Add UTM campaign parameters to your URLs and generate tracked campaign links instantly.

Generate cryptographically secure v4 UUIDs (Universally Unique Identifiers) in bulk. Support custom capitalization and clipboard copies.

Count characters, words, sentences, and paragraphs in your text. Measure reading time and estimate readability score index instantly.

Format, beautify, and indent raw XML strings client-side. Make your XML structured and readable with custom spacing.