I built 170+ tools and 37 browser games as a side project: here's what I learned

A few months ago I started with a tip calculator. Just wanted to learn Next.js 15 properly by building something real.

Then I added more calculators. Then a Wordle clone. Then Minesweeper. Then Snake. Then a unit converter. Then more games. It kind of took on a life of its own.

Today ToolHaven has 170+ tools and 37 browser games, all free, no login, no ads.

What's in it

On the tools side: tip calculator, BMI, age calculator, unit converters, date tools, finance calculators, percentage tools and more.