Simple Calculator

Contains adsIn-app purchases
67.9K reviews
Content rating
PEGI 3
10M+
Downloads
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About this app

[Key features]
Perform four fundamental operations and engineering calculations.

To start the engineering calculator, tap the engineering calculator icon.

To check the calculation history, tap the calculation history icon.

You can use all the previously inputted formulas. Tap the formula you need from the calculation history.

[Additional features]
To convert units, tap the unit calculator button. You can easily convert various types of
Currency,
Area,
Length,
Temperature,
Volume,
Mass,
Data,
Speed,
Time,
Date,
BMI,
Discount,
Age,
Numeral System,
GST,
Split bill,
Frequency,
Fuel,
Angle,
Pressure,
Force,
Power,
Loan


To change theme mode, tap the night mode icon.

To specify the time of night mode, select time range from settings.

To change color, chose the color you want from settings

To delete a history, long press on it in the history page

To change language, select preferred language from settings.

To play a beep or vibrate when pressing a button, go to settings.

To change numerals, select preferred numerals from settings (All numerals are supported)

To change number format, select the preferred format from settings

To change decimal places after the comma, select the number of decimal places from settings

To enable / disable full screen, enable / disable it from settings.

To keep calculation record, enable/disable it from settings.

To keep the screen on, enable/disable it from settings.
To hide an icon, go to settings.

*****
Last but not least, all of these features come in small size and it is completely free.
Do simple and scientific calculations easily.
Updated on
Aug 24, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Location, App activity and 2 others
  • This app may collect these data types
    Location, App activity and 2 others
  • Data is encrypted in transit
  • Data can’t be deleted

Ratings and reviews

65K reviews
Nancy S. FLA
September 17, 2026
It's easy. I keep books for several people and my calculator is right there on my phone. I can take a screen shot of the calculator and email it to my client.
7 people found this review helpful
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Lovkesh Sr
July 15, 2026
Title: Needs a quick date picker for birthday calculations "I really like the simplicity of this calculator app, but it is currently missing a key feature: a date picker. Without the ability to easily select dates from a calendar, it is very difficult to calculate birthdays or determine the number of days between specific dates. Adding a simple calendar interface would make this a 5-star app for me.
5 people found this review helpful
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John Inglis
July 11, 2026
Tried it for a minute or two. A Temu ad popped up and after almost a minute I gave up on it going away. Review and going to uninstall. Went back after this review and the Temu ad was still up. 😅 They should give a day to try it before they start annoying you with ads.
14 people found this review helpful
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What’s new

We improved user experience and fixed known bugs.