✨ 100% free & private — available in 6 languages

Free online tools
with no sign-up

Useful online utilities and tools that work right in your browser. 100% private, client-side, with zero registration or login required.

🎯 Explore tools

🌍 Free for everyone 🔒 Files never leave your device 🔒 100% private 📱 Install as app — works offline

🧰 Our tools

Everything you need

All services are free, private, and work on any device.

📕PDF Tools

🧮Calculators

🎂Age Calculator OnlineCalculate exact age in years, months, days — with zodiac sign, birthday countdown, and chronological age tracker. Free, no sign-up.Try now →📅Date Difference CalculatorCount days, weeks, months between two dates with business days, weekends, and holiday presets. Free online, no sign-up, 100% private.Try now →⏳Days Until CountdownCount days until any date with calendar visualization. Free, no sign-up, 100% private.Try now →⚖️BMI Calculator OnlineCalculate BMI with visual gauge, ideal weight, body fat %, Ponderal Index & health risk analysis. Free online, no sign-up, 100% private.Try now →📊Percentage CalculatorCalculate percentages — find percent of a number, percentage change, discounts & tips. Free, no sign-up, 100% private.Try now →📏Unit ConverterConvert between units of length, mass, temperature, volume, area, speed & more. Free, no sign-up, 100% private.Try now →🏖️Retirement CalculatorPlan your retirement with savings projections, income estimates & withdrawal strategies. Free, no sign-up, 100% private.Try now →

🖼️Image Tools

✨Background RemoverRemove image backgrounds instantly in your browser. Unlimited, free, private AI-powered background removal, no upload needed. Full-resolution transparent PNG, no watermark.Try now →🔾️Image ResizerResize images instantly in your browser. Set dimensions, quality, format & aspect ratio. No sign-up, 100% client-side, no upload.Try now →🗜️Image CompressorCompress and reduce image file sizes instantly. Batch JPEG, PNG, WebP compression with custom quality. No sign-up, 100% client-side.Try now →🖨️RGB to CMYK ConverterConvert RGB images to CMYK for print. View CMYK color channels & separations. Free online, no sign-up, 100% client-side.Try now →✏️Drawing ToolDraw, sketch & paint online with brushes, shapes & colors. Free, no sign-up, 100% client-side.Try now →

⚡Utilities

👠Color PickerPick, convert & analyze colors -- HEX, RGB, HSL, HSV, CMYK. Free online, no sign-up, 100% private client-side tool.Try now →🔐Base64 Encoder & DecoderEncode & decode text/files in Base64. Free online, no sign-up, 100% private client-side tool.Try now →📋JSON FormatterFormat, validate, minify JSON with tree view & syntax highlighting. Free online, no sign-up, 100% client-side.Try now →🔐Hash GeneratorGenerate MD5, SHA-1, SHA-256, SHA-384, SHA-512 hashes with HMAC. Free online, no sign-up, 100% client-side.Try now →🔑Password GeneratorGenerate strong, random passwords with customizable length, character types, passphrase mode, and entropy analysis. No sign-up, 100% client-side.Try now →⌨️Virtual KeyboardType in any language with an on-screen virtual keyboard. Free, no sign-up, 100% client-side.Try now →🕐Timestamp ConverterConvert Unix timestamps to human-readable dates and vice versa. Free, no sign-up, 100% private.Try now →📱QR Code GeneratorGenerate custom QR codes with colors, sizes & logos. Free, no sign-up, 100% client-side.Try now →📷QR Code ReaderScan and decode QR codes from images or camera. Free, no sign-up, 100% private.Try now →

📝Text Tools

🔤Case ConverterConvert text between UPPERCASE, lowercase, Title Case, camelCase, snake_case, kebab-case. Free online, no sign-up.Try now →📊Word CounterCount words, characters, sentences & paragraphs with real-time stats. Free, no sign-up, 100% client-side.Try now →📝Lorem Ipsum GeneratorGenerate Lorem Ipsum placeholder text with customizable paragraphs, words, and markup. Free, no sign-up, 100% client-side.Try now →📄Word to Markdown ConverterConvert Word DOCX to clean Markdown format. Free, no sign-up, 100% private.Try now →📊CSV to Markdown ConverterConvert CSV data to Markdown table format. Free, no sign-up, 100% private.Try now →📝HTML to Markdown ConverterConvert HTML code to clean Markdown format. Free, no sign-up, 100% private.Try now →

💎 Why choose 0Appz

Made with ❤️ for everyone

Privacy-first tools that just work.

🆓

Always free

No hidden costs, no premium plans. Everything is free forever.

🔒

100% private

Your data never leaves your device. All calculations happen right here.

🌍

6 languages

Use in English, Spanish, French, German, Arabic or Portuguese.

📱

Install as App

Add to your home screen and use offline. Works like a native app on any device.

❓ Questions?

Frequently asked

Is this safe to use? +

Absolutely! All tools are simple, ad-free, and nothing is saved online. Your privacy is fully protected.

Do I need to create an account? +

Nope! No sign-up, no email, no password. Just open the page and start using the tools right away.

Are these tools accurate? +

Yes! All tools handle edge cases, leap years, different calendar months, and time zones correctly.

Can I use this on my phone? +

Yes, everything works great on phones and tablets. The buttons are big and easy to tap!

Free online tools with no sign-up