Compact Scientific Calculator 36 is a professional scientific calculator. It License: Free ; OS: Windows XP Windows ; Language: EN; Version. Use simple and easy free online calculator at work, at school or at home. With our calculator you can perform simple and trigonometric calculations. Simple Calculator · Scientific Calculator · Percentage Calculator · Root Calculator. Basic Calculator, free and safe download. Basic Calculator latest version: Free Calculator for Basic Maths. In an age where complexity is seen as a virtue and a.