Notepad Calculator is described as 'For jotting down quick calculations. Mix free form text with calculations and see the results appear in the right hand margin as you type' and is an website in the Education & Reference category. There are more than 10 alternatives to Notepad Calculator, not only websites but also apps for a variety of platforms, including Mac, Windows, Self-Hosted solutions and Linux. The best alternative is Soulver. It's not free, so if you're looking for a free alternative, you could try Numi or OpalCalc. Other great sites and apps similar to Notepad Calculator are NoteCalc (Free, Open Source), Caligator (Free, Open Source), Calculist (Free, Open Source) and NekoCalc Notepad Calculator (Free).
Soulver is a smart notepad with a built-in calculator. It gives instant answers to any calculations it finds in your text. It's a better way to work stuff out than with a traditional calculator, and a more lightweight tool for quick calculations than a spreadsheet.
OpalCalc is a brand new type of calculator for the PC. As easy to use as Notepad or a word processor, OpalCalc allows natural language in the sum and multi-line support so you can go back and adjust your previous calculations on the fly.
A kickass, open-source calculator that lets you do calculations and unit conversions naturally, with features like: - weight conversion - length conversion - temperature conversion - currency conversion Super simple to use. Caligator works the way you think.
Calculist is an open source application that facilitates effective thinking. Write down your thoughts, ideas, and data in the form of lists. Focus your attention by zooming in to a specific list, and zoom out to see the broader context.
The Collaborative Computational Notebook Built for Modern Engineering. Enter math as it appears on paper, get instantaneous results, and share your calculations with colleagues and clients. No special syntax, no software, no headaches, no kidding.