All in One Unit Converter Pro

4.4
371 reviews
5K+
Downloads
Content rating
Everyone
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About this app

Most of the times we need to convert different units and perform some scientific calculations such as to convert Length units we may need to convert inches to mm , convert inches to cm , convert inches to feet , convert cm to inches and to convert Weight units such as convert kg to lbs , convert lbs to kg or to convert Farenheit to Celcius etc

So, for Scientific calculations and to help you easily convert units, All in One Universal Unit Converter - Calculator is Engineering Unit conversion calculator which supports both Metric and Imperial Units and consists smart tools which are also very useful engineering tools. Following are units conversion categories under Conversions tab:

- Length / Distance Unit Converter (Kilometer to Mile or Foot to Inches etc)
- Area Units Converter (Hectare to Acre or Mile to Yard etc)
- Volume Unit Converter (Cubic Meter to Cubic centi meter etc)
- Mass / Weight Unit Converter (Kilogram to Pounds or Grams to Ounces etc)
- Cooking Unit Converter (Tea spoon to Table spoon or Cup to Tea spoon etc)
- Computer Storage Units Converter (Bit to Byte or Megabyte to Kilobyte etc )
- Temperature Units Converter (Fahrenheit to Celsius or Kelvin to Celsius etc)
- Time Unit Converter helps (Year to Month or Seconds to Nanoseconds etc)
- Fuel Units Converter (Kilometres per Litre to Miles per Litre etc)
- Speed Units Converter (Mile per hour to Kilometre per hour etc)
- Pressure Unit Converter (Kilopascal to Pascal or Torr to Pascal etc)
- Force Calculator using force formula ( Newton to Dyne etc)
- Torque Units Converter is to convert units used to measure torque
- Angle Calculator (Degree to Radian or Radians to Degrees) etc
- Density Calculator using density formula
- Viscosity unit conversion
- Flow
- Surface Tension
- Energy Unit Converter (Joule to Calorie or Kilojoule to Joule etc)
- Power Units Converter (Megawatt to Kilowatt etc)
- Electric Current
- Electric Resistance of Resistor
- Electric Conductance
- Electrical Resistivity
- Electrical Conductivity
- Capacitance of Capacitor
- Inductance of Inductor
- Electric Charge Converter
- Electric Potential
- Sound Unit Converter
- Frequency conversion
- Screen Resolution

Unit Converter App also have very useful engineering tools which are implemented in Unit Converter - All in One Unit Conversion Tools to support and help in Engineering Unit Conversion. Following are these Smart Tools
under Tools tab:

- Scientific Calculator to perform Scientific calculations
- Stop Watch
- Memory Usage
- Protractor
- Periodic Table
- Number Counter
- Compass Needle
- Speed Meter
- RGB to HEX converter and HEX to RGB converter to convert RGB color codes to HEX color and vice versa
- Qibla Direction Finder
- Calendar
- Timer

For Scientific calculations following are math calculators under Calculations tab:

- Area Calculator
- Surface Area Calculator
- Perimeter Calculator
- Volume Calculator using volume formula
- Permutation Calculator
- Decimal to Fraction Calculator
- Proportion Calculator
- Date Difference Calculator (Age Calculator)
- Mileage Calculator , Distance Calculator , Fuel Calculator

Techsial Android Extreme Tech Arena is also offering:

- Find Device Info IMEI number - IMEI check ( https://play.google.com/store/apps/details?id=com.ghuman.apps.batterynotifier )
- Time Zone Converter - World Time Zones Clock ( https://play.google.com/store/apps/details?id=com.techsial.apps.timezones )

Contact: techsial16@gmail.com
Connect with Techsial Android Extreme Tech Arena with:
https://twitter.com/techsial
https://www.facebook.com/unitconvertertools
https://www.facebook.com/techsial
Updated on
Aug 22, 2025

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.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
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Ratings and reviews

4.4
352 reviews
A B
June 4, 2025
Hello, the Converter is awesome! I am using Premium version. However, is there a way how to disable those notifications? When I start, for example Calculator, the program is always showing me notification like "Long Press For Advanced Functions" etc. Sometimes, I need to wait few moments, when such a notification disappears, so I could use the program itself...
2 people found this review helpful
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Techsial
June 22, 2025
Thanks for your valuable review. Your suggestion to remove "Long Press" notifications is implemented and updated application is now available on play store.
Steve
August 10, 2025
Excellent Converter, with more conversion options than you could shake a stick at. It's very keenly priced, and is a no brainer, to get rid of the ads. Highly recommended, it's the only converter you will ever need.
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Techsial
August 10, 2025
Thanks Steve for such a nice and appreciative review. Enjoy using Unit Converter to convert units as a Unit Conversion tool.
Karsten Keese
July 23, 2022
The display of results could be smarter: instead of having to select the desired unit in the right column, simply show all results in the rows where one currently selects one. What would be fantastic would be a 'historical' section with units from times past (Pennies, Shillings, Klafter, ...), from other countries, cultures (European, Egypt, Persia, India, China, Japan) and religions (bible, khuram, thora). This would facilitate the understanding of ancient records, textbooks, novels and movies.
24 people found this review helpful
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What’s new

- 'Meter per Minute' unit is added in 'Speed' conversions
- Updates done to support 16 KB page sizes
- Dependencies are updated