About QingChuan Toolbox

A growing collection of free online tools, built by someone who got tired of ad-bloated calculator sites and tools hiding behind signup walls.

What This Is

QingChuan Toolbox is a free network of 22 online calculators and utilities, organized into four collections:

• Content Creation Tools — for YouTubers, TikTokers, and social media creators
• Marketing Tools — for advertisers, email marketers, and growth teams
• Calculator Network — money, health, fitness, career, and daily life calculators
• Business & Developer Tools — invoicing, SEO, security, and developer utilities

Why I Built This

I needed these tools myself. The existing free alternatives were either covered in ads, asked for an email before letting you use anything, or stopped working halfway through. So I built simpler versions, kept them free, and put them all in one place.

Everything you see here runs in your browser. Nothing gets uploaded. No accounts. No emails. No "upgrade to Pro" prompts.

How These Are Funded

Eventually I'll show some Google AdSense ads on these pages (not yet — I'm still applying). That's the only way I plan to fund this. No premium tiers. No data selling. No "free trial." If you find these useful, allowing ads is the easiest way to support what I'm doing.

Found a Bug?

If a calculator gives you a wrong answer, or a tool breaks on your phone, please let me know. Everything here gets updated when things break.

What's Next

I'm building more tools as I find gaps. The roadmap includes pet calculators, real estate calculators, education tools, and more developer utilities. If you have a request, send it over.