Privacy
What this site collects.
Short version: nothing you do not send us yourself.
Tool inputs
Every tool on this site calculates in your browser. The numbers you type are not submitted to a server, not stored, and not logged. Closing the tab discards them.
Analytics and cookies
This site sets no advertising cookies and loads no third-party analytics script. Fonts are served by Google Fonts, which receives the request for the font files, including your IP address; that request is how the typeface reaches the page.
If you write to hello@nazmulstech.com, that message and our reply are kept in the mailbox for as long as the conversation is useful. Ask and it is deleted.
Server logs
The host keeps standard access logs — IP address, timestamp, requested path, user agent — for security and troubleshooting. They are not joined to any other data.
Contact
Questions about any of the above: hello@nazmulstech.com. Last updated 10 November 2026.