ABOUT
About Pattobako
Pattobako is a collection of free tools for quick, everyday calculations.
What we are building
Some calculations are too small for a spreadsheet but too useful to do in your head. Pattobako puts those calculations in simple pages you can open and use right away, with no account or sign-in.
How the calculators work
Dates, prices, text, and other values entered into our tools are normally processed in your browser. We do not receive or store those inputs.
When you choose to share a result from a supported calculator, the values needed to recreate that calculation are added to the shared URL. Text and raffle entries are not included in shared URLs.
Our approach
We focus on clear answers, fast pages, and a good mobile experience. A calculator can still be affected by incorrect inputs or software bugs, so double-check important decisions with another reliable source.