CalcPad

CalcPad is an all-in-one software software solution that is targeted at novices and professionals alike, as it does not require any advanced computer skills to be deployed.

The application is a portable utility, meaning that you can launch and use it without needing to install it first. Thus, you can simply copy its folder to a USB-connected removable device, then run it on a different computer.

What sets CalcPad apart from other math calculators is the fact that there is no Enter button, as everything is calculated as you type. In other words, if you make a mistake and you need to erase one or more characters, the result gets updated accordingly in realtime.

As you would expect from this kind of software solution, CalcPad supports a wide range of expression, since it basically incorporates multiple calculators: graphing, sine wave, percentage, roots, equation roots, base, unit and color value calculators.

CalcPad includes a dedicated unit converter that supports domains like energy, length, mass, temperature, area, density, force, entropy, resistance, luminance etc. Alternatively, in the main window, you can simply type the source amount and unit, then specify the target unit, and have CalcPad display the result.

CalcPad stays on top of all the other running programs, so you can easily perform calculations no matter which other software you are currently working in. More importantly, it packs numerous samples for illustrating each type of calculation you can perform, so this should help you get more accustomed to CalcPad.

To top it all off, the app is also a database of constants from numerous fields, such as math, physics, particles, Planck units, solar system, galaxy, Sun, Earth, Moon, and the periodic table. Needless to say, you might require a lot of time to discover all the functions of this app, so make sure you take your time.