Cat age calculator converts cat years to human years using the AAHA and AAFP feline guidelines, and reports the matching life stage. Free, runs in your browser.
Professional color picker tool with multiple format support, palette management, and advanced color manipulation features. Perfect for designers and developers.
Roll virtual dice online for free. Choose from d4, d6, d8, d10, d12, and d20 dice. Roll multiple dice at once with animated results and roll history.
Search, browse, and copy emojis instantly. Browse by category, search by name, view recently used, and copy to clipboard with one click.
Flip a virtual coin online with true 50/50 probability. Track flip history, see heads vs tails statistics, and make quick random decisions. Free coin toss simulator.
Calculate your Glucose Ketone Index (GKI) from blood glucose and ketone readings. See your metabolic zone on the Seyfried scale and get goal-aligned guidance for weight loss, longevity, or therapeutic ketosis.
Shuffle, sort, reverse, or pick random items from any list. Paste items one per line and instantly randomize, sort A-Z, sort by length, or select N random winners.
Generate Markdown-based llms.txt files with a site summary, guidance notes, and curated links for AI assistants and search agents.
Generate standard placeholder text (Lorem Ipsum) for your designs, mockups, and prototypes. Customizable paragraphs, sentences, or words.
Generate secure, URL-safe NanoIDs for databases, APIs, and public sharing links. Customize alphabet and size, then bulk-export IDs instantly in your browser.
Generate random jokes by category - programming, puns, miscellaneous, spooky, and more. Safe mode filter included. Powered by JokeAPI.
Pick a random item from any list instantly. Paste names, options, or items and let the tool randomly select one or multiple entries. Perfect for giveaways, decisions, and classroom picks.
Generate random realistic names for testing, writing, or any project. Filter by gender, add middle names, and generate up to 100 names at once. Free online tool.
Spin a customizable random wheel to make decisions, pick winners, or choose what to eat. Add up to 20 options with animated spinner. Fair and random every time.
UUID v5 generator creates deterministic namespace-based UUIDs from a SHA-1 hash of a name and namespace, matching Python, Java, and .NET output exactly. Free, in your browser.
Generate RFC-compatible UUID version 7 values with millisecond time ordering. Create single or bulk UUIDv7 values instantly in your browser.
Decode WebAuthn passkey attestation and assertion responses into readable flags, AAGUID, and COSE keys. Free client-side debugger, no signup, no data leaves your browser.