1st Calculator: Advanced Desktop Calculator

Handy and useful expression calculator and converter with skins and lots of features

**FREE DOWNLOAD (v1.15)** File Size: 558KB | Safe & Verified
Education And Reference Math Shareware

Key Features

  • Handy and useful expression calculator and unit converter with skins.
  • Main features: fully customizable interface with skins; keyboard shortcuts; all arithmetic operations, more than 20 functions; editable lists of constants and unit conversions; recalling previously used expressions; five result formats with changeable precision; automatic clipboard copy/paste; minimizes to the system tray.

Technical Specifications

  • **Publisher:** Romanlab.com
  • **License:** Shareware
  • **Operating System:** Windows 7, Windows 8, Windows 10, Windows 11
  • **Last Updated:** October 15, 2025
  • **Category:** Education And Reference / Math

User Rating

Based on 207 reviews.