
It supports fractions, complex numbers and custom functions. It has an expression history so you can review your previous steps. You can also update a previous expression and all following expressions are updated automatically. A useful resource for students and teachers of mathematics. Read more about it in the blog or check out the instruction manual for a full list of the new features.

Go to the conversion page to convert between units of measure of length, area or weight.
The Virtual Calculator emulates a real pocket calculator. Type on your keyboard or use your mouse to press the buttons.
It supports trigonometric functions, logarithm and antilogarithm.
Practice your RPN skills on the internet with this simple RPN Calculator. Javascript required.
Suan Pan (??) is the Chinese name for the Chinese abacus. It has two decks, the lower deck has 5 beads for each rod, the upper deck has two. To use the virtual suanpan, your browser must allow javascript. The version of Suan Pan on this website has 18 rods, you can perform calculations with numbers up to 18 digits.
Click this link to visit the soroban. Soroban (????) is the Japanese name for the Japanese abacus. Like the Chinese abacus, it has two decks, but the lower deck has 4 beads for each rod and the upper deck has only one. To use the soroban on this site, your browser must allow javascript. The Soroban on this site has 18 rods.
How to work out the percentage of a number when using a calculator that is missing the percent (%) key.
The latest release of the online scientific calculator supports complex numbers. Read more about it on the blog.