About moduhub

Why does this exist?

How many days until that deadline? What's the HEX for this color? These answers are online — but you get to them by scrolling past ads, closing popups, and tapping the wrong button on your phone.

moduhub skips all of that. You open the page, the tool is there, and that's the whole thing.

What's here?

Date and percentage calculators, color converters, lottery number pickers, a flag quiz, a mind map, and more. Some were built out of need, some just for fun.

Everything is free. Sign-in is only needed for the few tools that save your work.

Are the numbers right?

Anything that does math gets checked by hand before it goes live. Still, people build these — if a result looks wrong, tell us and it gets fixed.

• Values that keep changing, like exchange rates, show the date they came from.
• If a result is only a rough guide, the tool says so.
• For anything official, please double-check against the source that matters.

Where does my input go?

Usually nowhere. The math happens in your browser, so there's nothing on a server to store or leak.

The few tools that fetch outside data — exchange rates, river temperatures — say so on their own page.

How often does this change?

New tools keep arriving, and existing ones get fixed whenever something turns out to be annoying in practice.

If there's something you wish existed here, say so.