extension ExtPose

Melanto Calculator

CRX id


Description from extension meta

One different scientific calculator...

Image from store Melanto Calculator
Description from store 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. Options: 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: App version: https://chrome.google.com/webstore/detail/melanto-calculator/nioffklpggjkmgpndbfklpnclpohpjid “Desktop” version: https://chrome.google.com/webstore/detail/calculator/inhhlmhdllknkepmabbkhnlbaddllabl All the 3 versions come with the same underlying code but I couldn’t create one single tool to address all the 3 ways of use because Chrome doesn’t allow apps to add icon to the toolbar (so we need the extension), while extension can’t add icon to the apps page (so we need an app) and then, at some moment Chrome offered the “packaged apps” option and I made the “desktop” version for those who want it in separate window, acting as separate app… DISCLAIMER OF WARRANTIES: MELANTO CALCULATOR IS PROVIDED “AS IS” AND WITHOUT WARRANTY OF ANY KIND www.melanto.com

Latest reviews

  • (2021-01-29) Antonio Ornelas: 💯🎯🎯
  • (2020-09-07) sher ali: too much slow.but always use this extention
  • (2020-03-03) Scott Kurjanski: Excellent app. Thank you!
  • (2020-02-17) Navid Aslam: great............
  • (2019-01-18) Liam The Great: Perfect
  • (2018-12-05) Super User: Hard to understand but still works.
  • (2017-04-09) Ian Bell: Useless. Does not even display in scientific notation
  • (2016-06-17) Ron InHouston: Did not change image of calculator face on its own. Allows you to use the numbers keypad as well as mouse. In addition to the clear button, it also has a "Backspace" button. This one's "A Keeper"
  • (2015-06-26) ömer ellialtı: klavyeden erşim sağlayabileceğiniz h m
  • (2014-01-30) Dragos Circa: Awesome. I like a pop-up calculator, nice interactions, and it can read keys from numpad. Very easy to use
  • (2013-11-26) Toxa Zex: Работает!
  • (2013-01-18) Helen Yip: Very helpful but it takes up way too much space on my screen.
  • (2012-06-13) Alana Chhour: It was nice, but when you try to use it, the calculator keeps on flashing.
  • (2012-04-05) Very Nice but please Update the icon in the Omnibar

Latest issues

  • (2018-04-19, v:4.0) Taylor Wisnowski: negative exponents?
    maybe im not pressing the correct button.. i pressed xn and it wont let me use a negative value..
  • (2017-03-28, v: Steve Taormina: reciprocal or inverse key
    Where is the reciprocal or inverse key on this calculator? It's usually represented by a 1/x.
  • (2017-02-04, v: Alex ExtGuru: Monetization browser extension
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  • (2016-10-31, v: Jason Doherty: inverse sin
    do the inverse sin and cos work correctly? for example asin(.8) should equal 53 degrees. I cannot get this at all no matter what combination of keys I use. and I have tried flipping between degrees and radians???
  • (2015-05-29, v: Icybernate Capt. Cliff: calculator
    RPN option available?
  • (2015-05-22, v: Jeff Stikeleather: Not all showing
    Installed. When called up it parks in the upper right of the window ... full screen or not ... and the whole calculator is not showing. Cannot be moved or used.


12,063 history
4.2 (53 votes)
Last update / version
2018-09-17 / 4.0
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