[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.

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Last but not least all of these features come in small size and it is completely free.