All-in-One Calculator – Free Online Calculator Collection

A collection of free utility tools you can use instantly without installation.

You can check your direction and azimuth using your smartphone.

Measure your current speed using GPS.

Quickly calculate percentages, ratios, and percentage change.

Calculate distance and area on the map.

Play 15×15 Gomoku directly in your browser.

View local time and UTC in real time with seconds.

Generate and download barcodes such as CODE128, EAN-13, and UPC.

Create URL and text QR codes for free.