Calculator Tools
Loan Calculator
Estimate fixed-rate monthly repayments and total interest.
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Search the U18-CHAN collection or choose a category. Every built-in tool works directly in your browser.
Text Tools
Lorem Ipsum Generator
Create placeholder paragraphs for a draft layout or prototype.
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Meta Tag Generator
Create a title and description tag for your webpage.
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Number Converter
Convert whole numbers between binary, octal, decimal and hexadecimal.
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Open Graph Generator
Prepare Open Graph tags for a webpage and its share image.
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Password Generator
Create random passwords with cryptographic browser randomness.
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Percentage Calculator
Calculate a percentage of a value or a percentage change.
Use ToolImage Tools
PNG to JPG
Convert PNG images to JPEG with a clean white background.
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QR Code Generator
Create a scannable QR code for a link or a short piece of text.
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Random Number Generator
Choose random whole numbers within an inclusive range.
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Remove Duplicate Lines
Keep one copy of each line and tidy up repeated entries.
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Robots.txt Generator
Build a simple robots.txt file with explicit crawl rules.
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Schema Markup Generator
Create basic Organization, WebSite or Article JSON-LD.
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SHA-256 Generator
Calculate a SHA-256 digest of UTF-8 text or a local file.
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Sitemap Generator
Create an XML sitemap from a list of your own page URLs.
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Slug Generator
Turn a heading into a clean, hyphen-separated URL slug.
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Stopwatch
Time a task with start, pause, reset and lap controls.
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Temperature Converter
Convert Celsius, Fahrenheit and Kelvin temperatures.
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Text Cleaner
Clean repeated spaces, trailing whitespace and excessive blank lines.
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Text Difference Checker
Compare two text blocks line by line.
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Text Repeater
Repeat a phrase or text block with your choice of separator.
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Time Calculator
Add or subtract hours, minutes and seconds as durations.
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Time Zone Converter
Convert a dated local time between IANA time zones.
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Unit Converter
Convert length, weight and temperature measurements.
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