100% Free & Private

Free Converter Online

Powerful online tools that run entirely in your browser. Convert JSON to CSV, XML to CSV, generate secure passwords, count words and tokens, format strings, analyze SEO, build prompts, and convert units—all without uploading your data.

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100% Free Forever
No Data Uploads
Works Offline
Lightning Fast
WHY CHOOSE US

Built for Privacy & Speed

Every tool runs locally in your browser with zero data uploads

100% Private
Your data never leaves your device. Everything runs locally in your browser—no servers, no uploads, no tracking.
Completely Free
All tools are free with no hidden costs, premium tiers, or usage limits. Use as much as you want.
Works Offline
Once loaded, our tools work without internet. Perfect for sensitive data or unreliable connections.
Lightning Fast
No server round-trips means instant results. Convert, generate, and analyze in milliseconds.
No Account Needed
Start using any tool immediately. No signup, no email, no registration required.
Multi-Language
Available in 12 languages with full RTL support. Tools for everyone, everywhere.
14+ Tools
From file converters to password generators, word counters to unit converters—we have it all.
Mobile Friendly
Responsive design that works on any device—desktop, tablet, or phone.
Open & Transparent
Built by TatwirLabs with a commitment to quality, privacy, and user trust.
HOW IT WORKS

Three Simple Steps

No downloads, no accounts, no waiting—start using any tool instantly

01

Pick Your Tool

Select from 14+ powerful tools: converters, generators, counters, and more.

02

Enter Your Input

Type, paste, or configure your settings. All processing happens locally in your browser.

03

Download Results

Get instant results in milliseconds. Copy to clipboard or download with one click.

Done! Your data stayed 100% private on your device.

Who Uses Our Tools

Trusted by developers, analysts, students, and professionals worldwide

Developers
Convert JSON/XML to CSV, format strings, and count tokens for AI prompts.
Data Analysts
Transform data formats quickly without uploading sensitive information.
Content Writers
Count words, check character limits, and format text instantly.
Students
Free tools for assignments—word counting, unit conversion, and more.
SEO Professionals
Generate SEO reports and optimize content with our analysis tools.
Everyone
Simple, fast tools for everyday tasks—no expertise required.

Frequently Asked Questions

Everything you need to know about Free Converter Online

Yes, 100% free with no hidden costs, premium tiers, or usage limits. All tools are completely free to use forever.

Absolutely. All tools run entirely in your browser. Your data is never uploaded to any server. We don't collect, store, or process your data.

No. All tools work immediately without any signup, login, or registration. Just open and use.

Yes. Once loaded, our tools work without an internet connection. This is because everything runs locally in your browser.

We offer 14+ tools including JSON to CSV converter, password generator, word counter, string formatter, SEO report, token counter, and various unit converters (weight, volume, temperature, time, length, area).

Our tools are available in 12 languages: English, Arabic, French, Turkish, Spanish, German, Chinese, Japanese, Portuguese, Russian, Korean, and Italian.

Our converters use JavaScript running directly in your browser. When you paste or upload data, it's processed locally on your device and never sent to a server.

Yes, all tools are responsive and work on mobile devices, tablets, and desktops.

Free Converter Online is built and maintained by TatwirLabs, a software company committed to privacy-first, high-quality developer tools.

You can reach us on Twitter/X at @tatwirlabs. We welcome feedback and feature requests from our users.

Trusted by users worldwide

Ready to get started?

Pick a tool and start converting, generating, or analyzing—for free

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