Free Online Tools for IT Professionals & Business Owners

Calculate GST at 5%, 12%, 18%, or 28%. Get CGST, SGST, and IGST splits for intra-state and inter-state transactions instantly.

Calculate monthly loan EMI for home loans, car loans, and personal loans. See total interest payable and amortization schedule.

Find out how much your monthly SIP investment will grow. Calculate total invested, estimated returns, and maturity value.

Calculate return on investment percentage, net profit or loss, annualized ROI, and payback period for any business investment.

Calculate gross profit margin %, markup %, and net profit from cost and selling price. Works in reverse to find target selling price.

Find how many units you need to sell to break even. Enter fixed costs, variable cost per unit, and selling price to get your break-even point.

Calculate your minimum hourly and daily freelance rate based on your target income, working hours, and business expenses.

Three modes: What is X% of Y? X is what % of Y? Percentage change from X to Y — with real-time calculation as you type.

Generate sequential invoice numbers with custom prefix, separator, and padding. Settings are saved in browser for your next visit.

Find your exact age in years, months, and days from your date of birth. Also shows total days lived and your next birthday countdown.

Calculate exact days, weeks, months, and years between any two dates. Also counts business days, useful for project timelines and contracts.

Convert length, weight, temperature, area, and volume. Includes Kerala land units — convert cents to square feet and acres to cents.

Convert IST to Dubai, Singapore, London, New York, and 20+ time zones. Pre-loaded with India, UAE, and Singapore for NRI businesses.

Boost focus with the Pomodoro technique — 25-minute work sessions, 5-minute breaks. Tracks completed sessions with browser notifications.

Generate cryptographically random numbers in any range. Includes dice roller, coin flipper, and lottery number picker.

Create QR codes for URLs, text, email, phone numbers, and WiFi credentials. Download as PNG — no login, no watermark, completely free.

Create a downloadable digital business card (.vcf file) with your contact details. Share via QR code at networking events.

Format, validate, and minify JSON with syntax highlighting. Instantly detects JSON errors and shows the exact line number of the issue.

Test regular expressions in real time. Highlights all matches, shows capture groups, and supports global, case-insensitive, and multiline flags.

Decode any JWT token to read the header, payload, and signature. Shows expiry status and converts Unix timestamps to readable dates.

Encode text to Base64 or decode Base64 back to text. Supports standard and URL-safe Base64 — all processing done in browser.

Generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes from any text using your browser's Web Crypto API — nothing sent to server.

Generate one or bulk UUID v4 values using cryptographic randomness. Options for uppercase, hyphens, and download as text file.

Convert colors between HEX, RGB, RGBA, and HSL in real time. See a live color swatch and generate tints and shades instantly.

Convert between px, rem, em, vw, vh, and pt instantly. Set your base font size for accurate rem conversions in responsive design.

Live Markdown editor with real-time HTML preview. Copy the rendered HTML output — ideal for blog posts and documentation.

Encode special characters to HTML entities or decode HTML entities back to text. Prevents XSS vulnerabilities in web applications.

Remove whitespace, comments, and unnecessary characters from HTML and CSS. Shows exact file size reduction percentage.

Build cron job schedules visually. Get a human-readable explanation and see the next 5 run times for any cron expression.

Compare two texts side by side with added lines in green and removed lines in red. Great for reviewing document edits and code changes.

Upload an image or enter text to create favicons in all required sizes — 16×16, 32×32, 180×180 (Apple), and 512×512 PNG.

Check if your color combinations meet WCAG 2.1 AA and AAA accessibility standards. Shows contrast ratio and pass/fail for text sizes.

See exactly how your page appears in Google search results. Live preview of title, URL, and meta description on desktop and mobile.

Analyze keyword frequency and density in any text. Identifies over-optimized phrases and flags potential keyword stuffing for SEO.

Build Google Analytics UTM tracking URLs for campaigns. Add source, medium, campaign, term, and content parameters with presets.

Generate correct hreflang link tags for multilingual websites. Supports x-default and outputs HTML, HTTP header, and sitemap formats.

Categorize your backlink anchor texts — branded, exact match, partial match, generic, and naked URL — with percentage breakdown.

Generate JSON-LD schema markup for LocalBusiness, FAQPage, Article, Person, and more. Copy ready-to-paste structured data.

Create a valid robots.txt file with checkbox-based rules. Block AI training bots (GPTBot, CCBot), add sitemap URLs, and download.

Generate strong random passwords with custom length and character sets. Uses cryptographic randomness — nothing stored or sent anywhere.

Test how strong your password is in real time. See estimated crack time and checklist of missing complexity requirements.

Analyze your Content Security Policy header. Parses each directive, flags unsafe-inline and wildcard risks, and gives a security score.

Resize images to perfect dimensions for Instagram, Facebook, LinkedIn, Twitter, YouTube, and WhatsApp — all in one click.

Real-time tweet length counter with 280-character limit indicator. Shows remaining characters and a live tweet preview card.

Check character limits for LinkedIn posts, headlines, about sections, and experience descriptions — with real-time counting.

Compress JPEG and PNG images to reduce file size while maintaining quality. All processing is done in your browser — nothing uploaded.

Enter any YouTube video URL to download the thumbnail in HD, HQ, medium, and standard quality — no login required.

Count words, characters, sentences, and paragraphs in real time. Get estimated reading time and Flesch readability score for your content.

Convert text between UPPERCASE, lowercase, Title Case, camelCase, PascalCase, snake_case, and kebab-case in one click.

Enter a topic or keyword to get 15 SEO-optimized blog post title ideas using proven copywriting formulas — free with no login.

Generate placeholder text by paragraph, word count, or character count. Classic Lorem Ipsum or random text — with HTML tag option.