Reverse Text transforms text by reversing characters, words, or lines with multiple reversal modes for different use cases.

Ring Size Converter is a tool for converting ring sizes between US, UK, EU, JP, CH, and AU standards. It can also convert from diameter measurements in millimeters.

Rock Paper Scissors API simulates the classic hand game with detailed outcome analysis, statistics, and support for multiple rounds.

Roman Numeral Converter is a bidirectional tool for converting between Arabic numbers (1-3999) and Roman numerals. It provides detailed breakdowns of the conversion process.

Roman Numeral Math is a tool for performing mathematical operations (add, subtract, multiply, divide) with Roman numerals. It shows both numeric and Roman numeral equations.

Routing Number Lookup is a simple tool for looking up routing number information for USA Banks. It returns information such as the bank, location, and more based on the routing number provided.

RSS to JSON is a simple tool for converting RSS feeds into JSON format. It returns the RSS feed in JSON format.

Sales Tax Lookup is a simple tool for looking up the sales tax rate of a location. It returns the sales tax rate.

Sales Tax Calculator computes the exact sales tax amount for purchases in any US state or ZIP code. Get accurate tax calculations with breakdowns by state, county, city, and special district rates.

I-Bond Rates provides current and historical interest rates for US Series I Savings Bonds. I-Bonds are inflation-protected savings bonds with a composite rate made up of a fixed rate plus an inflation rate that adjusts every 6 months.

Scrabble Word Scorer is a tool for calculating Scrabble points for words. It supports multiple languages including English, French, Spanish, German, and Italian with language-specific letter values.

Sentiment Analysis is a simple tool for analyzing the sentiment of a text. It returns the sentiment score and the sentiment label.

SEO Scraper is a simple tool for scraping SEO data. It returns the meta title, meta description, and more.

SEO Validator is a simple tool for validating SEO metrics. It returns a structured breakdown of on-page SEO checks, a list of issues to fix, and a composite 0-100 SEO score with a letter grade for the web page.

Shoe Size Converter is a tool for converting shoe sizes between US, UK, EU, CM, JP, AU, MX, and KR standards. It supports men, women, unisex, and child sizes.

Short Code Generator is a tool for generating short alphanumeric codes. It supports multiple character sets including alphanumeric, alphabetic, numeric, hexadecimal, and Base58 with customizable length.

Silver Price is a simple tool for getting the current price of silver. It returns the current price of silver in any currency and in various units.

Sitemap Generator creates valid XML sitemaps from URL lists following the sitemaps.org protocol for search engine optimization.

Slot Machine Simulator is a tool for simulating slot machine spins with realistic reel symbols and payout calculations. It supports customizable number of reels, bet amounts, and multiple spins with detailed win/loss statistics.

Slugify is a tool for converting text into URL-friendly slugs. It handles special characters, accents, and spaces to create clean, SEO-friendly URLs.