All-In-One Calculator

Contains adsIn-app purchases
140K reviews
Editors' Choice
Content rating
Enjoy this app for free, plus many more free of ads and in-app purchases, with a Google Play Pass subscription. Learn more
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About this app

The original All-In-One Calculator for Android
It's a FREE, complete and easy to use multi calculator & converter.

What does it do?
Designed with simplicity in mind, it helps you solve everyday problems.
From simple or complex calculations, to unit and currency conversions, percentages, proportions, areas, volumes, etc... it does it all. And it does it good!

This is the PERFECT Calculator
Passionate development combined with constant feedback we receive from our users resulted in that we think is the best multi calculator on the store.
Featuring over 75 FREE Calculators and Unit Converters packed in with a Simple or Scientific Calculator, it's the only calculator you will need from now on on your device.

Oh, and did we say it is completely FREE?
Yes, it is free. We think everyone should enjoy this.

If you are a student, teacher, engineer, handyman, contractor or just somebody who struggles with math & conversions, you really should give this one a try.
• Use it for simple or complex calculations
• Convert units or currencies in the same app
• Enjoy easier homework or school assignments
• Learn. See step by step solutions to your calculations

So, on with the features...

• Simple or Scientific layout
• Editable input & cursor
• Copy & Paste support
• Calculation history
• Memory buttons
• Function graphing
• Dec, Hex & Binary
• Floating calculator
• Widget

• Algebra, Geometry, Unit Converters, Finance, Health & Misc
• Currency converter with 160 currencies (available offline)
• Instant results delivered as you type
• Step-by-step solution & formulas
• Smart search for faster navigation
• Create shortcuts on home screen

• Percentage calculator
• Proportion calculator
• Ratio calculator
• Average calculator - arithmetic, geometric and harmonic means
• Equation solver - linear, quadratic and equation system
• Combinations and permutations
• Decimal to fraction
• Fraction simplifier
• Prime number checker
• Greatest common factor & Lowest common multiple calculator
• Random number generator

• Shape calculators for square, rectangle, parallelogram, trapezoid, rhombus, triangle, pentagon, hexagon, circle, circle arc, ellipse
• Body calculators for cube, rect. prism, square pyramid, sq. pyramid frustum, cylinder, cone, conical frustum, sphere, spherical cap, spherical frustum, ellipsoid

Unit converters
• Acceleration converter
• Angle converter
• Length converter
• Energy converter
• Force converter
• Torque converter
• Area converter
• Volume converter
• Volumetric flow converter
• Weight converter
• Temperature converter
• Pressure converter
• Power converter
• Speed converter
• Mileage converter
• Time converter
• Digital storage converter
• Data transfer speed converter
• Numeric base converter
• Roman numerals converter
• Shoe size converter
• Ring size converter
• Cooking converter

• Currency converter with 160 currencies available offline
• Unit price calculator
• Sales tax calculator
• Tip calculator
• Loan calculator
• Simple / Compound interest calculator

• Body mass index - BMI
• Daily calories burn
• Body fat percentage

• Age calculator
• Date calculator
• Time calculator
• Mileage calculator
• Ohm's law calculator - voltage, current, resistance and power

Developed in Transylvania 🇷🇴
Updated on
Oct 26, 2023

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
This app may collect these data types
Personal info, App activity and 2 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

136K reviews
Amanda Dickson
December 3, 2023
One of the BEST & MOST USEFUL apps that I didn't even know I needed! I've always just used the calculator app that comes with my phone. I had no idea I was missing out!! The capabilities of this app far exceed my needs as it has the ability to calculate almost anything you could possibly think of (and then some). I love that I can set favorites for quick access and that I can customize each calculator to my specific needs. I highly recommend this calculator. Download it now. You won't regret it!
5 people found this review helpful
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November 17, 2023
Hands down the best calculator app I've used. Highly customizable for just about every calculation you would need for everyday use. Currently has 74 different calculation options (length, area, volume, speed, force, distance, data, time, etc). Better yet is the ability to enter one value, say 1 mile for distance and see its equivalent value for every other measurement in that category (km, ft, light-year, etc). Has ads but works perfectly without wifi. $5 in-app upgrade removes ads forever.
91 people found this review helpful
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Kristin Cole
September 23, 2023
Simple & beyond expectations -- I was delighted at all of the options, many I wouldn't need to use but after I went through them all I ended up with 20 that I kept as "favorites" that I can reasonably expect to use with regularity. The app is fast, smooth, easy to understand, very customizable; has no unnecessary or distracting elements--everything about this app has value/purpose and looks clean & modern. I have been very pleasantly surprised & use it often.
35 people found this review helpful
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What's new

Version 2.2.8
Added Android 14 support.
Minor bugs and fixes.