เครื่องคิดเลขสนุกๆ

Focus timer with 25/5/15 minute intervals. Customize sessions, track progress. Boost productivity with the Pomodoro technique.

Professional stopwatch with lap timing and countdown timer. Large display, lap list with best/worst highlights, sound notification when done.

Compress images client-side with no server upload. Adjust quality, max width, and output format. Compare before/after and download compressed images.

Simple in-browser notepad with auto-save. Write quick notes that persist in your browser. Download as text file. No signup needed.

Create professional invoices for free. Add line items, tax, and notes. Print or save as PDF. Perfect for freelancers and small businesses.

Calculate the real dollar cost of meetings. Set attendees, hourly rate, and duration. Live timer shows cost ticking up. See what else that money could buy.