RPN Calculator

Name: RPN Calculator
Rating: 3.25 (8 reviews)
Author: Mike Conca

This extension adds a convenient reverse Polish notation (RPN) calculator as a browser action button. Also called postfix, RPN calculators take their operators after the operands. If you've used HP calculators, this extension is for you.

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Features & Capabilities

This extension adds a convenient reverse Polish notation (RPN) calculator as a browser action button. Also called postfix, RPN calculators take their operators after the operands.

For example, to get the sum of two and three on a normal calculator, you would hit "2 + 3 =". On an RPN calculator, you would hit "2 Enter 3 +". In general, RPN calculators require fewer keystrokes over a series of extended operations.

It may seem strange at first, but once you get used to it, you'll never go back. HP made a series of extremely popular RPN calculators back in the 1970's and 1980's.

User Growth & Download Statistics

Add-on

By:

Daily users:

Rating:

Version:

1.2resigned1 Last updated: 2024-04-25

Version code:

5728765

Creation date:

2017-09-26

Risk:

Size:

29.03KB

Email:

mi*****@conca.net

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-07-13

Compare stats and ranking:

Ranking

# 20,825 ▼ 399

Other rankings

#18 in calculator keyword 31 ▼ 1#22 in calculus keyword 7

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Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

Mike Conca

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/rpn-calculator/

Email:

mi*****@conca.net

User Reviews

by 退出*****, 2025-04-18

by 天灭*****, 2025-03-13

View all user reviews ›

Is RPN Calculator Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

RPN Calculator does not require any sensitive permissions.

Risk impact analysis details

Low This permission has no access or impact on the user's system or data, thus carrying no risk.

Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

RPN Calculator has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
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