General Utilities x402 offerings

Add days or business days to a date - calendar or weekday offset from a start date, returns the resulting date and weekday

Base64 encode and decode text - returns standard and URL-safe base64, or the decoded text with UTF-8 detection

JSON formatter and beautifier - pretty-print or minify JSON with chosen indent and optional key sorting

Speed converter - convert between mph, km/h, m/s, knots and ft/s with all equivalents

Volume converter - convert between liters, gallons, quarts, cups, tablespoons and milliliters with all equivalents

HTML escape and unescape - convert special characters to HTML entities and back

Weight converter - convert between pounds, kilograms, ounces, grams, stone and tons with all equivalents

Length converter - convert between miles, kilometers, feet, meters, inches, yards and nautical miles with all equivalents

IP address classifier and formatter - IPv4 or IPv6 type (private, loopback, link-local, multicast, global), integer, expanded and compressed forms

Age calculator from birthdate - exact age in years, months and days, total days lived and days until the next birthday

JSON to CSV converter - turns an array of objects or arrays into CSV with proper quoting

Slug generator and case converter - slug, kebab, snake, camel, Pascal, constant and title case from any text

URL encode and decode - percent-encode text for query strings and paths, or decode a percent-encoded string

URL parser - scheme, host, port, path segments, query parameters and fragment from any absolute URL

Text diff - line-by-line differences between two texts with added, removed and unchanged counts and similarity

Days between two dates calculator - total days, weeks, years-months-days and business days between any two dates

Percentage calculator - percent change between two numbers, percent of a number, what percent one number is of another, and increase or decrease by a percentage

Thesaurus and word finder - synonyms, antonyms, rhymes, sound-alikes and related terms

Grammar, spelling and style check in 30+ languages - issues with positions, suggestions and corrected text

Convert ebooks on Linux for Kindle - ebook-convert, Calibre GUI and batch ePub, MOBI and PDF conversion

IBAN validation with ISO 7064 MOD 97-10 checksum - country code, check digits and pass/fail

Check a lottery ticket against a Powerball, Mega Millions, NY Lotto or Take 5 draw - matches and prize tier

Latest or dated winning numbers for Powerball, Mega Millions, NY Lotto and Take 5

Magic: The Gathering card search using Scryfall query syntax - matching cards with full details