Merge PDF
Combine multiple PDFs into one file.
Open tool →Free online tools for the United States and beyond. Merge, compress, convert, calculate — fast and easy, no signup required.
Combine multiple PDFs into one file.
Open tool →Split PDF into separate pages or ranges.
Open tool →Reduce PDF file size in your browser.
Open tool →Rotate pages 90°, 180°, or 270°.
Open tool →Extract selected pages to a new PDF.
Open tool →Convert JPG images into a PDF.
Open tool →Convert PNG images into a PDF.
Open tool →Export PDF pages as JPG images.
Open tool →Export PDF pages as PNG images.
Open tool →Reorder PDF pages before download.
Open tool →Add simple page numbers to a PDF.
Open tool →Add a password to open a PDF.
Open tool →Shrink JPG/PNG size with quality control.
Open tool →Resize width and height in pixels.
Open tool →Crop an image to a custom area.
Open tool →Convert JPG to transparent-ready PNG.
Open tool →Convert PNG to JPG format.
Open tool →Convert WebP images to JPG.
Open tool →Convert JPG to modern WebP.
Open tool →Convert any image to grayscale.
Open tool →Rotate or flip an image.
Open tool →Re-export image to strip metadata.
Open tool →Resize for common ID photo sizes.
Open tool →Sample colors from an uploaded image.
Open tool →All existing site calculators remain active in this category.
Open this calculator.
Open tool →Add or subtract hours and minutes, or convert between time units.
Open tool →Calculate monthly payments for home, auto, or personal loans.
Open tool →Easily view the future value, invested amount, and estimated returns of a mutual fund SIP.
Open tool →Monthly mortgage payment, interest, and total cost with down payment.
Open tool →Find percentage of a number, percentage change, and what percent X is of Y.
Open tool →Days between two dates and add or subtract years, months, and days.
Open tool →Exact age in years, months, and days from date of birth.
Open tool →Tip amount, total bill, and split per person.
Open tool →Body Mass Index with metric or imperial units.
Open tool →Project savings growth with regular deposits.
Open tool →Quick simple interest and total amount calculation.
Open tool →Compound interest with common compounding frequencies.
Open tool →Estimate take-home pay after a simple tax percentage.
Open tool →Calculate profit or loss amount and percentage.
Open tool →Final price and savings after a discount.
Open tool →Add or remove sales tax from any amount instantly.
Open tool →How long to reach a savings goal at a monthly deposit rate.
Open tool →Compare monthly income vs expenses and see surplus or deficit.
Open tool →Revenue, costs, and profit for a simple business snapshot.
Open tool →Gross margin and markup from cost and selling price.
Open tool →Set retail price from wholesale cost and target margin.
Open tool →Simple gain/loss from buy price, sell price, and shares.
Open tool →Units needed to cover fixed and variable costs.
Open tool →Sum daily transactions into a simple daily sales total.
Open tool →Monthly revenue vs expenses for a profit snapshot.
Open tool →Profit and margin on phone accessories.
Open tool →Total common shop expenses for a period.
Open tool →Convert GPA & CGPA to approximate percentage.
Open tool →Estimate files fit on a drive from average file size.
Open tool →Estimate monthly data from streaming and browsing habits.
Open tool →Estimate electricity cost to charge a device or EV-style load.
Open tool →Estimate time to download a file at a given speed.
Open tool →Diagonal, width, and height relationships for displays.
Open tool →Rough runtime from battery capacity and load.
Open tool →Marks needed in remaining exams for a target percentage.
Open tool →Plan hours per topic across available days.
Open tool →Current attendance percent and classes you can miss.
Open tool →Days and weeks left until your exam date.
Open tool →Convert between Celsius, Fahrenheit, and Kelvin.
Open tool →Count words, characters, sentences.
Open tool →Count characters with/without spaces.
Open tool →UPPER, lower, Title Case, Sentence.
Open tool →Generate placeholder text.
Open tool →Compare two text blocks.
Open tool →Join lines into a single paragraph.
Open tool →Remove duplicate lines from text.
Open tool →Sort lines A–Z or Z–A.
Open tool →Create URL-friendly slugs.
Open tool →Estimate reading time for text.
Open tool →Basic keyword frequency in text.
Open tool →Count sentences in your text.
Open tool →Inches, feet, meters, miles…
Open tool →Pounds, ounces, kilograms…
Open tool →°F, °C, Kelvin.
Open tool →KB, MB, GB, TB.
Open tool →mph, km/h, m/s.
Open tool →sq ft, sq m, acres…
Open tool →Gallons, liters, cups…
Open tool →Hours, minutes, seconds, days.
Open tool →MPG ↔ L/100km.
Open tool →Binary, decimal, hex.
Open tool →Roman ↔ numbers.
Open tool →Fraction ↔ percentage.
Open tool →Strong random passwords.
Open tool →Rate password strength locally.
Open tool →Generate UUID v4 identifiers.
Open tool →MD5 / SHA-256 style hashes (browser).
Open tool →Encode or decode Base64 text.
Open tool →Percent-encode URLs and text.
Open tool →HMAC-SHA256 message codes.
Open tool →Random alphanumeric strings.
Open tool →Generate numeric PINs.
Open tool →Word-based passphrases.
Open tool →Decode JWT payload (no verify).
Open tool →Simple shift cipher encode/decode.
Open tool →Create QR codes for URLs and text.
Open tool →Random integers in a range.
Open tool →Heads or tails.
Open tool →Roll virtual dice.
Open tool →Random yes or no.
Open tool →Pick random names from a list.
Open tool →Random pick from lines.
Open tool →Build vCard text for QR.
Open tool →Format Wi‑Fi login string for QR.
Open tool →Random hex color palette.
Open tool →CSS gradient snippets.
Open tool →Beautify or minify JSON.
Open tool →Check if JSON is valid.
Open tool →Escape HTML entities.
Open tool →Minify CSS text.
Open tool →Strip simple JS whitespace.
Open tool →Unix ↔ date/time.
Open tool →Describe common cron patterns.
Open tool →Test regular expressions.
Open tool →Convert basic Markdown.
Open tool →Compare two code snippets.
Open tool →Parse URL query parameters.
Open tool →Show your public IP (client hint).
Open tool →Validate IPv4 / IPv6 format.
Open tool →IPv4 CIDR subnet info.
Open tool →Parse browser user agent string.
Open tool →Lookup common HTTP codes.
Open tool →Break a URL into parts.
Open tool →Estimate download time.
Open tool →Random MAC-like strings.
Open tool →Common TCP/UDP ports list.
Open tool →Basic email format check.
Open tool →Many tools run in your browser so files may never leave your device. Calculator results are estimates for informational use only.