Free Online Tools
All Tools in One Place

Generate ads.txt files with ad network records, DIRECT/RESELLER declarations, and certification authority IDs. Free online ads.txt generator.

Calculate your exact age in years, months, and days. Free online age calculator from date of birth.

Convert between sq ft, sq m, acres, hectares, and more with instant results and step-by-step formulas.

Generate Article JSON-LD structured data with author, publisher, and date. Free online article schema markup generator.

Calculate mean, median, mode, and weighted average with detailed step-by-step breakdowns. Free online average calculator.

Estimate your blood alcohol content (BAC) based on drinks consumed, weight, and time. Free online BAC calculator.

Generate a QR code for a Bitcoin address with optional amount.

Calculate your Body Mass Index (BMI) with detailed health insights and WHO categories.

Calculate your Basal Metabolic Rate (BMR) with multiple formulas and TDEE breakdown.

Estimate your body fat percentage using the U.S. Navy or BMI-based method.

Calculate body surface area (BSA) using Mosteller and DuBois formulas. Free online BSA calculator for medical dosing.

Generate BreadcrumbList JSON-LD structured data for Google rich results. Free online breadcrumb schema markup generator.

Calculate the BTU cooling capacity needed for any room based on size, insulation, and climate. Free online BTU calculator.

Compress multiple images at once. Free, fast, and secure bulk image compression tool.

Resize multiple images at once. Free online bulk image resizer.

Estimate your daily calorie needs based on your activity level and fitness goals.

Generate canonical link tags with URL normalization options including HTTPS, WWW, trailing slash, and parameter removal. Free online canonical URL generator.

Count characters with/without spaces, letters, numbers, symbols, emojis, and check platform character limits in real-time.

Calculate compound interest, future value, and present value with step-by-step breakdowns. Free online calculator.

Reduce PDF file size without losing quality. Choose compression level.

Calculate concrete volume and bags needed for slabs, columns, footings, and cylinders. Free online concrete calculator.

Generate a QR code with a coupon code and description.

Add or subtract days from a date, or find the number of days between two dates. Free online date calculator with business days and weeks.

Count total days, workdays, and weekends between two dates. Free online day counter calculator.

Remove unwanted pages from a PDF file. Free, fast, and secure.

Calculate density from mass and volume with unit conversion. Free online density calculator with material reference.

Calculate dew point temperature from air temperature and relative humidity using the Magnus formula.

Generate a QR code for a Discord server invite.

Calculate sale price, discount percentage, and savings instantly. Free online discount calculator with double discount support.

Calculate electricity cost and energy consumption for appliances based on power, usage hours, and rate.

Generate a QR code that opens an email with pre-filled subject and message.

Generate a QR code for an Ethereum address with optional amount.

Generate a QR code for an event with name, location, and dates.

Strip EXIF, GPS, and metadata from images. Free, private, browser-based.

Calculate exponents and powers including negative and fractional exponents. Free online exponent calculator with step-by-step solutions.

Extract specific pages from a PDF. Single page, ranges, odd/even, first/last N.

Resize images for Facebook cover, post, profile & story. Free online tool.

Generate a QR code that links to a Facebook page or post.

Find all factors, prime factorization, and check if a number is prime. Free online factor calculator with step-by-step solutions.

Add, subtract, multiply, and divide fractions with step-by-step solutions. Free online fraction calculator.

Calculate fuel cost for any trip based on distance, fuel economy, and fuel price with currency support.

Calculate fuel efficiency in km/L, L/100km, and MPG from distance and fuel used.

Generate a QR code with GPS coordinates (latitude, longitude).

Calculate your GPA across semesters with course credits, grades, and multiple grading scales.

Calculate your weighted grade from assignments with scores, maximums, and percentage weights.

Calculate gravel volume, weight, and bags needed for driveways, walkways, and gardens. Free online gravel calculator.

Find the GCF (GCD) of two or three numbers using the Euclidean algorithm. Free online GCF calculator with LCM and step-by-step breakdowns.

Find your ideal healthy weight range based on your height and BMI.

Calculate heat index from temperature and humidity using the Rothfusz formula with caution levels.

Convert HEIC/HEIF images from iPhone to JPG format with adjustable quality.

Convert HEIC/HEIF images from iPhone to PNG format with adjustable quality and transparency.

Generate .htaccess files with HTTPS redirects, security headers, caching rules, and SEO-friendly configurations. Free online .htaccess generator.

Compress JPG, PNG, WEBP, and GIF images instantly in your browser. Free, fast, and secure.

Crop images online with aspect ratio presets, rotate, flip, and zoom. Free crop with social media templates.

Change image DPI metadata or resample to target print resolution. Dual-mode conversion.

Check image file size, dimensions, and format. Free online image information tool.

Convert images between JPG, PNG, and WEBP formats with adjustable quality, resize, and metadata options.

Inspect EXIF, GPS, and file metadata with a privacy risk summary. Free online metadata viewer.

Convert images to PDF online. Free image to PDF converter.

Resize images for Instagram posts, stories, reels & profile. Free online tool.

Generate a QR code that links to an Instagram profile.

Calculate IP subnet details including network address, broadcast, hosts, and subnet mask from IPv4 and CIDR.

Compress JPG images to reduce file size. Free, fast, and secure browser-based tool.

Compress and convert JPG images. Free online JPG compressor and converter.

Optimize JPG images for web. Free online JPG optimizer for faster loading.

Convert JPG, PNG, and other images to PDF documents instantly.

Convert JPG to PDF online. Free JPG to PDF image converter.

Convert JPG to PNG online. Free JPG to PNG image converter.

Convert JPG to WEBP online. Free JPG to WEBP image converter.

Analyze keyword density, frequency, and top phrases in your text. Free professional SEO keyword density checker with filters and sorting.

Find the LCM of two or three numbers with step-by-step breakdowns. Free online least common multiple calculator.

Convert between metric and imperial length units instantly. Supports mm, cm, m, km, in, ft, yd, mi, and nautical miles.

Generate a QR code that links to a LinkedIn profile or page.

Calculate monthly EMI, total payment, and interest for any loan. Free online loan EMI calculator with prepayment analysis.

Generate LocalBusiness JSON-LD structured data with address, hours, and geo. Free online local business schema markup generator.

Compress images losslessly — strip metadata and reduce size with zero quality loss.

Calculate profit margin, markup, selling price, and cost price. Free online margin calculator for business and finance.

Generate a QR code that links to a Mastodon profile.

Calculate mean, median, mode, and range from a set of numbers. Free online statistics calculator with frequency distribution.

Generate a MECard QR code with name, phone, email, and organization.

Combine multiple PDF files into a single document. Free, fast, and secure.

Generate HTML meta tags, preview Google search results, and validate SEO metadata. Free online meta tag generator.

Calculate molarity (concentration) from solute mass, molecular weight, and solution volume. Free online molarity calculator.

Calculate molecular weight from any chemical formula. Supports parentheses, nested groups, and all 118 elements.

Calculate mulch volume and bags needed for garden beds, lawns, and landscaping. Free online mulch calculator.

Calculate voltage, current, resistance, and power using Ohm's Law. Enter any 2 values to solve for the rest.

Generate Open Graph meta tags for Facebook, LinkedIn, and social sharing. Free OG tag generator with live preview.

Generate Organization JSON-LD structured data with contact point and address. Free online organization schema markup generator.

Estimate your ovulation date, fertile window, and best days to conceive. Free online ovulation calculator.

Calculate your running pace, speed, or finish time for any distance.

Generate secure random passwords with customizable length, character types, and strength analysis.

Generate a PayPal.me QR code with email, amount, and note.

Convert PDF pages to high-quality JPG images. Choose DPI and quality.

Convert PDF pages to high-quality PNG images. Choose DPI and page range.

Calculate percent error between actual and measured values with step-by-step breakdowns. Free online percent error calculator.

Calculate what percentage one number is of another, find X% of Y, or compute percentage increase or decrease. Free online percentage calculator.

Predict your next period, ovulation, fertile window, and upcoming cycles. Free online period calculator.

Calculate permutations (nPr) and combinations (nCr) with step-by-step breakdowns. Free online probability calculator.

Generate a QR code that dials a phone number when scanned.

Generate a QR code that links to a Pinterest board or pin.

Compress PNG images to reduce file size without losing quality. Free, fast, and secure.

Optimize PNG images for web. Free online PNG optimizer for faster loading.

Convert PNG to JPG online. Free PNG to JPG image converter.

Convert PNG to SVG online. Free PNG to SVG image converter.

Convert PNG to WEBP online. Free PNG to WEBP image converter.

Check PNG transparency online. Free alpha channel analyzer.

Calculate your estimated due date, current pregnancy week, trimester, and more with our free online pregnancy calculator.

Estimate your conception date using LMP, due date, ultrasound, or IVF transfer date. Free online pregnancy conception calculator.

Track your pregnancy weight gain against IOM/ACOG recommended guidelines. Check if your weight gain is on track.

Calculate present value and future value with compound interest. Free online TVM calculator with multiple compounding options.

Generate Product JSON-LD structured data with offers, price, and ratings. Free online product schema markup generator.

Find the missing side of a right triangle using the Pythagorean theorem. Free online calculator with step-by-step solutions.

Generate QR codes from text, URLs, WiFi, vCard, and more. Download as PNG, SVG, or PDF.

Simplify ratios, find missing values, and compare ratios with step-by-step breakdowns. Free online ratio calculator.

Calculate reading time, speaking time, listening time, and estimated pages. Free online reading speed calculator with audience modes.

Generate a QR code that links to a Reddit post or profile.

Generate redirect rules for Apache, Nginx, IIS, PHP, WordPress, Laravel, Express, Next.js, Cloudflare, Netlify, and Vercel. Free online redirect generator.

Reduce image file size to 100KB online. Free, fast, and secure browser-based tool.

Reduce image file size to 20KB online. Free, fast, and secure browser-based tool.

Reduce image file size to 50KB online. Free, fast, and secure browser-based tool.

Read resistor color bands and calculate resistance value, tolerance, and min/max range.

Resize images by percentage. Free online image percentage resizer.

Resize images to exact pixel dimensions. Free online pixel image resizer.

Resize images by percentage or pixels. Free online image resizer.

Resize JPG images by percentage or pixels. Free online JPG resizer.

Resize PNG images by percentage or pixels. Free online PNG resizer.

Resize WEBP images by percentage or pixels. Free online WEBP resizer.

Generate robots.txt files with custom user-agent rules, allow/disallow paths, crawl-delay, and sitemap directives. Free online robots.txt generator.

Calculate roof area, squares, and bundles needed based on roof type, pitch, and material. Free online roofing calculator.

Calculate square root, cube root, and nth root of any number. Free online root calculator with step-by-step solutions.

Rotate PDF pages clockwise, counter-clockwise, or 180°. Free and secure.

Round numbers to any decimal place or significant digit. Free online rounding calculator with half up, half down, and half even modes.

Calculate take-home pay, salary breakdown, and salary hike instantly. Free online salary calculator with tax deduction support.

Convert to and from scientific notation, add, and multiply. Free online scientific notation calculator with step-by-step breakdowns.

Generate XML sitemaps with custom URLs, priority, change frequency, and last modified dates. Free online sitemap generator.

Generate SEO-friendly URL slugs from text with customizable separators, length limits, and prefix/suffix options. Free online slug generator.

Generate a QR code that opens SMS with a pre-filled number and message.

Generate a QR code that links to a Snapchat profile.

Generate SoftwareApplication JSON-LD structured data with OS, offers, and author. Free online software app schema markup generator.

Generate a QR code that links to a SoundCloud track or profile.

Convert between km/h, mph, m/s, knots, and ft/s with instant results and step-by-step formulas.

Split a PDF file into multiple documents by page or page range.

Generate a QR code that links to a Spotify song, album, or playlist.

Calculate the square footage of any area using rectangle, triangle, circle, or trapezoid shapes. Free online area calculator.

Calculate risers, tread depth, and stringer length for stair construction. Free online stair calculator.

Calculate population and sample standard deviation, variance, and mean with step-by-step breakdowns. Free online calculator.

Generate a QR code that opens a Telegram chat when scanned.

Convert between Celsius, Fahrenheit, and Kelvin with instant results and step-by-step formulas.

Convert text between 14 case formats: sentence, lowercase, UPPERCASE, Title Case, camelCase, snake_case, kebab-case, and more.

Generate a QR code from any text. Free, fast, and works offline.

Generate a QR code that links to a TikTok profile.

Calculate how many tiles you need to cover any floor area. Accounts for grout width and waste percentage.

Calculate hours worked, overtime, and gross pay from clock-in and clock-out times. Free online time card calculator.

Calculate the exact duration between two dates and times. Free online time duration calculator.

Calculate tip amount, total bill, and per-person split instantly. Free online tip calculator with custom percentages.

Calculate tire dimensions from width, aspect ratio, and rim size. Compare tires and check speedometer error.

Generate a QR code that links to a Twitch channel.

Generate Twitter Card meta tags for X (Twitter) sharing. Free Twitter card generator with live preview.

Generate a QR code for a tweet with text, URL, and hashtags.

Generate a UPI QR code for Indian digital payments.

Decode encoded URLs and text with support for multiple decoding modes and query parameter parsing. Free online URL decoder.

Encode URLs and text using standard URL encoding, RFC 3986, or component encoding. Free online URL encoder.

Generate a QR code from any URL. Free, fast, and works offline.

Generate a QR code with your full contact details (vCard).

Calculate voltage drop in electrical cables based on wire size, length, current, and material.

Convert between liters, gallons, cups, fl oz, and more with instant results and step-by-step formulas.

Compress WEBP images to reduce file size with adjustable quality. Free and secure.

Compress WEBP images online. Free WEBP image compressor.

Convert WEBP to JPG, PNG, or WEBP. Free universal WEBP converter.

Optimize WEBP images for web. Free online WEBP optimizer for faster loading.

Convert WEBP to JPG online. Free WEBP to JPG image converter.

Convert WEBP to PNG online. Free WEBP to PNG image converter.

Convert between metric and imperial weight units. Supports mg, g, kg, tonnes, oz, lb, and stone.

Generate a QR code that opens a WhatsApp chat when scanned.

Generate a QR code for WiFi login. Share your WiFi without typing the password.

Calculate wind chill temperature from air temperature and wind speed using the NWS formula.

Count words, characters, sentences, and paragraphs in real-time. Free online word counter with reading time, speaking time, and vocabulary analysis.

Generate a QR code that links to a YouTube video or channel.

Resize images for YouTube thumbnails, channel art & profile. Free online tool.