TLD Lookup retrieves information about any top-level domain including its type (generic, country-code, sponsored) and the sponsoring organization responsible for managing it.

TLS Check inspects which TLS/SSL protocol versions a server supports. It probes TLS 1.0 through 1.3, reports which are negotiable, and derives a security verdict — the highest supported version, whether deprecated protocols are still exposed, and a composite risk score.

Tor Detect is an API that checks whether a given IP address belongs to a known Tor exit node. Useful for security, access control, and analytics.

TOTP Generator creates time-based one-time passwords compatible with authenticator apps using standard TOTP algorithms.

Trade Balance provides monthly US international trade data - exports, imports, and the resulting goods-and-services trade balance (deficit or surplus) on a Balance of Payments basis.

Translator is a simple tool for translating text. It returns the translated text.

Treasury Yields provides current and historical US Treasury constant-maturity market yields across the full curve (1-month through 30-year), plus TIPS real yields. Essential data for yield curve analysis and fixed income research.

Trivia is a simple tool for getting trivia questions. It returns a random trivia question based on your selected category.

Truth or Dare generates random truth questions and dare challenges for the classic party game. Features 400+ unique prompts with per-API-key tracking to avoid repeats.

Truth Table Generator creates complete truth tables for boolean expressions with support for AND, OR, NOT, XOR, NAND, and NOR operators.

ULID Generator is a tool for generating Universally Unique Lexicographically Sortable Identifiers (ULIDs). ULIDs are 26-character strings that are sortable by time and collision-resistant.

Unemployment Rate is a tool for retrieving unemployment statistics by country. It returns the unemployment rate as a percentage of the total labor force, with data available for over 200 countries from 1991 to present.

Unicode Escape/Unescape is a tool for converting characters to Unicode escape sequences and vice versa. It handles all Unicode characters including emojis and surrogate pairs.

Unicode Character Lookup is a tool for retrieving detailed information about Unicode characters. It provides codepoint, UTF-16 encoding, category, and emoji name information.

Unit Converter is a simple tool for converting units. It returns the converted value.

Unix Timestamp Converter is a tool for converting between Unix timestamps and human-readable dates. It supports both seconds and milliseconds formats.

URL Encoder/Decoder is a tool for encoding and decoding URL strings. It converts special characters to percent-encoded format and decodes them back for safe URL transmission.

URL Lookup is a simple tool for looking up the location of a URL. It returns the location of the URL provided.

URL Title is a simple tool for getting the title of a web page. It returns the title of the web page based on the URL provided.

URL to Markdown is a powerful tool for converting any webpage into clean, readable Markdown format. It preserves the document structure including headings, links, lists, and images.