Online calculator with tons of options - comparable to a scientific calculator
Judy's TenKey, winner of the Ziff Davis 'Desktop Accessory of the Year,' enables you to work faster and more reliably
A free calculator for the Windows platform that features advanced scientific capabilities
Simple tool for simple calculations
Free tape calculator for non-trivial expressions
Scientific, engineering, statistical and financial calculator with conversions
Powerful and very complete scientific calculator
Learn to calculate your CO2
Powerful but easy to use mathematical calculator
Calculate complex numbers, fractions, vectors and matrices with arbitrary precision