miniwebtool — Free Online Tools

Quick access to free online calculators, converters, and text tools in 15 languages. Search, browse, save favorites.

miniwebtool gives you instant access to a growing library of free online tools — right from your browser toolbar. 🔍 SEARCH & BROWSE • Instantly search across all tools by name or keyword • Browse by category: Math, Financial, Text, Randomness, Health & Fitness, Time & Date, Sports, Webmaster, Hash & Checksum, and more • Drill down into subcategories for quick navigation 👁 HOVER PREVIEW • Hover over any tool to see a live preview — no need to leave your current page • Preview loads the full tool in a compact floating window • Try tools before you open them in a new tab ⭐ FAVORITES & RECENTS • Star your most-used tools for one-click access • Recent history tracks your last-used tools automatically • Choose your default tab: Favorites, Categories, Recent, or All Tools 🌍 15 LANGUAGES English, Português, Deutsch, Español, Français, Bahasa Indonesia, Italiano, 日本語, 한국어, Polski, Русский, ไทย, Tiếng Việt, 简体中文, 繁體中文 🖱 RIGHT-CLICK TOOLS • Select text on any page → right-click to open it in Word Counter, Character Counter, Case Converter, Grammar Checker, Base64 Encoder, and more • Select a number → right-click to calculate Square Root, Factorial, Percentage, convert to Binary/Hex, and more • Extract all URLs, emails, or phone numbers from any page with one click 🎨 APPEARANCE • Light, dark, and auto (system) themes • Toggle tool descriptions on/off • Clean, fast interface — no bloat, no ads 📦 DATA • Export/import settings and favorites as JSON • Syncs across devices via Chrome Sync • All data stays in your browser — no account needed TOOL CATEGORIES • Math — Square root, factorial, percentage, prime checker, statistics, geometry, algebra, and more • Financial — Mortgage, ROI, compound interest, salary, tax, tip calculators • Text — Word counter, case converter, grammar checker, text encoder/decoder • Randomness — Random number, picker, name, password, dice, coin flip generators • Health & Fitness — BMI, calorie, body fat, heart rate, sleep calculators • Time & Date — Age, date difference, countdown, timezone converters • Hash & Checksum — MD5, SHA-1, SHA-256, CRC32 generators • Webmaster — URL encoder, HTML tools, JSON formatter • Sports — Pace, batting average, bowling calculators • Miscellaneous — Unit converters, color tools, QR generators, and more Free and open. No sign-up required. New tools added regularly. Visit https://miniwebtool.com for the full experience.