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Ovulation Calculator
Health & Fitness ToolsPredict your ovulation day and fertile window based on your menstrual cycle length. View a 3-month cycle calendar and da...
Text Highlighter
Text ToolsHighlight multiple keywords in your text with different colors. Supports case-sensitive, whole word, and regex matching...
QR Code Reader
QR Code & Barcode ToolsScan and decode QR codes from images or your camera. Instantly detects URLs, WiFi credentials, contacts, and more.
Sleep Calculator
Health & Fitness ToolsFind your optimal bedtime or wake-up time based on 90-minute sleep cycles. Wake up refreshed by timing your sleep to com...
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Test your laptop touchpad functionality - detect taps, gestures, multi-touch, and pointer tracking i...
Perform quick calculations with standard and scientific modes. Supports keyboard input, calculation...
Test your keyboard for broken keys, ghosting, and rollover issues. Supports Full (100%), TKL (80%),...
Test your monitor's refresh rate with visual animations. Compare 30Hz, 60Hz, 120Hz side by side and...
Count characters, words, sentences, and paragraphs instantly. Check text against platform limits for...
Test, calibrate, and fix your display with 12 professional tools: Dead Pixels, Master Pattern, SMPTE...
Test mouse buttons, scroll wheel, click speed (CPS), and drag functionality. Visual feedback shows i...
Test your touchscreen for dead zones, multi-touch support, and responsiveness. Draw mode for accurac...
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Convert CSV data to JSON format instantly. Supports custom delimiters, auto-detection, and flexible...
Convert JSON data to well-formatted XML instantly. Customize root element, array item names, indenta...
Convert XML documents to JSON format instantly with configurable attribute handling, text node keys,...
Format, beautify, minify, and validate XML documents with syntax highlighting and interactive tree v...
Format, beautify, minify, and validate YAML data with syntax highlighting, tree view, and sort keys.
View, sort, filter, and edit CSV data in a spreadsheet-like interface. Import files, edit inline, an...
Calculate your 5 target heart rate training zones based on age. Choose between Simple or Tanaka Max...
Predict your ovulation day and fertile window based on your menstrual cycle length. View a 3-month c...
Estimate your blood alcohol content (BAC) using the Widmark formula. Enter your weight, gender, drin...
Calculate your waist-to-hip ratio to assess health risks. See body shape classification, WHO risk ca...
Format, minify, and validate JSON data instantly with syntax highlighting, tree view, and real-time...
Convert JSON arrays to CSV format with table preview, nested object flattening, and customizable del...