Melanto Calculator

Melanto Calculator

One different scientific calculator...

  • Melanto Calculator
  • Melanto Calculator
What is Melanto Calculator?
Melanto Calculator is a distinctive scientific calculator Chrome extension that enables users to see both sides of the current binary operation. Designed with touch-screens in mind but compatible with keyboard-operated devices, it also offers various themes. This extension has expanded from a jQuery Mobile example to a complete scientific calculator. Versions of the calculator are also available as standalone or desktop apps for user's convenience. The Melanto Calculator is a work in progress, constantly being refined for improved functionality.
Users: 10,000+
Rating: 4.21 (52)
Version: 4.0 (Last updated: 2018-09-17)
Creation date: 2018-09-17
Risk impact: Low risk impact
Risk likelihood: Very low risk likelihood
Manifest version: 2
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Size: 647.17K
Stats date:

Other platforms

Not available on Firefox
Not available on Edge
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This is kinda unusual scientific calculator.

What makes it unusual is that you can see both sides of the current binary operation. For example -- if you type 2 + 2 you'll see exactly "2 + 2" until you press "=". The tool was made with touch-screen in mind and should be ready for touch-screen chromebooks.

On devices with keyboard you can use the obvious keys: number keys, dot (floating point), +, -, *, /, Enter (=), ESC (C) and Backspace. The advanced ("scientific") functions are not yet accessible with keyboard shortcuts (but better keyboard support is planned for the next releases).

The initial goal of this extension was to be a real-life example of jQuery Mobile (and it worked as such) but somehow, with the time, more options were added and it became full-featured scientific calculator. It is, however, still work in progress, so let me know if you find a bug, if something isn't working or if you want to see new feature added.


There are 3 different “themes” for you too choose from. You can change the theme from the options page. Select between black, white or the original “3d buttons”. (Just click the “options” link at the bottom-right of the extension's popup and select the respective theme from the list)

Other versions of Melanto Calculator

The same tool is available in 3 different versions: this one (extension added to the toolbar), as standalone chrome app (adding calculator icon to the apps page and opening the tool in its own browser tab) and as “desktop” app (pens the calculator in separate window, simulating desktop app). Here are the other two versions:

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User reviews
User reviews summary
These summaries are automatically generated weekly using AI based on recent user reviews. Chrome Web Store does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
  • Very useful
  • Can read keys from numpad
  • Has a 'Backspace' button
  • Can be used as scientific calculator
  • Slow
  • Takes up too much screen space
  • Calculator keeps flashing
  • Cannot move calculator tab
  • Icon needs update
Most mentioned
  • Usefulness
  • Problems with the calculator tab
  • Space it takes on screen
Recent reviews
It is very useful and works well, but could you please make it so the calculator tab is moveable.
by Elmonious Elmonious, 2021-08-19

too much slow.but always use this extention
by sher ali sher ali, 2020-09-07

Excellent app. Thank you!
View all user reviews
Risk impact

Melanto Calculator is relatively safe to use as it requires very minimum permissions.

Risk likelihood

Melanto Calculator has earned a good reputation and can be trusted.

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Promo images
Melanto Calculator small promo image
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