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All-In-One Calculator - Multi calculator & converter

Unlock your math potential with this complete multi calculator & converter for effortless calculations and conversions!

All-In-One Calculator
  • 1.6.7 Version
  • 4.8 Score
  • 8M+ Downloads
  • In-app purchases License
  • 3+ Content Rating
Download Android APK (9.07 MB)
Old Versions
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CONS

Occasional full-screen ads can disrupt user experience.

Learning curve exists due to the range of available features.

Previous calculations not cleared automatically upon reopening the app.

Some users experienced layout inefficiency or confusion.

Lack of certain specific functionalities (e.g., bitwise operations).

Default settings may require manual adjustments for preferences.

Certain advanced functions may only be accessible through a paid pro version.

Complexity of tools can overwhelm casual users.

Requests for ratings can feel pushy before proper usage.

The ultimate All-In-One Calculator for Android

This application is completely FREE, offering a comprehensive and user-friendly multi calculator & converter.

What can it do?

Crafted with simplicity as a priority, this tool assists you in tackling daily challenges.

Whether it’s straightforward or advanced calculations, unit and currency conversions, percentages, proportions, areas, volumes, and more... it covers all your needs effectively!

This is the IDEAL Calculator

Our dedicated development team has taken into account the ongoing input from our users, resulting in what we believe to be the finest multi calculator available.

With over 75 FREE calculators and unit converters included along with a Scientific Calculator, this will be the sole calculator you ever need on your device.

Oh, and did we mention that it is entirely FREE?

Indeed, it is free of charge. We believe everyone should have access to it.

If you’re a student, educator, engineer, handyman, contractor, or simply someone who finds math and conversions challenging, you ought to give this a shot.

• Use it for both straightforward and complex mathematical tasks

• Convert units or currencies within the same app

• Make homework or school projects easier

Now, let’s dive into the features...

MAIN CALCULATOR

• Clean interface with large buttons

• Editable input and cursor functionality

• Support for copy & paste

• Scientific functions available

• History of calculations

• Memory function buttons

• Home screen widget

75 CALCULATORS & CONVERTERS

• Covers Algebra, Geometry, Unit Conversions, Finance, Health, Date & Time

• Currency conversion with 160 currencies (works offline)

• Instant results as you type

• Smart search feature for quick navigation

Algebra

• Percentage calculator

• Proportion calculator

• Ratio calculator

• Average calculator - arithmetic, geometric, and harmonic means

• Equation solver for linear, quadratic, and systems of equations

• Calculator for greatest common factor & least common multiple

• Calculations for combinations and permutations

• Decimal to fraction conversion

• Fraction simplifier

• Prime number verifier

• Random number generator

Geometry

• Shape calculators for square, rectangle, parallelogram, trapezoid, rhombus, triangle, pentagon, hexagon, circle, arc, and ellipse

• Volume calculators for cube, rectangular prism, square pyramid, frustum, cylinder, cone, spherical sections, and ellipsoid

Unit converters

• Converter for acceleration

• Angle conversion

• Length conversion

• Energy changing

• Force conversions

• Torque changing

• Area conversions

• Volume conversions

• Flow rate conversion

• Weight conversions

• Temperature conversions

• Pressure conversions

• Power conversions

• Speed conversions

• Mileage changes

• Time conversions

• Digital data conversion

• Data transfer speed conversion

• Numeric base conversion

• Roman numeral conversion

• Shoe size conversion

• Ring size conversion

• Cooking measurements conversion

Finance

• Offline currency converter supporting 160 currencies

• Price per unit calculator

• Sales tax calculator

• Tip calculation tool

• Loan calculator

• Simple and compound interest calculators

Health

• Body mass index (BMI) calculator

• Daily calorie expenditure calculator

• Body fat percentage calculator

Date & time

• Age calculator

• Date manipulation - Add or subtract years, months, days, hours, and minutes

• Time interval calculator - Determine the difference between two dates

Miscellaneous

• Mileage calculation tool

• Ohm's law calculator covering voltage, current, resistance, and power

Created in Transylvania 🇷🇴

Our mission?

Make the perfect calculator.

All-In-One Calculator is a simple, clean and easy to use calculator with a complete set of tools for day to day life, such as a unit converter, currency converter, percentage calculator and more.

From simple or complex calculations, to unit and currency conversions, percentages, proportions, areas, volumes, etc... it does it all. And it does it good!

What people say?

Best calculator app for most calculations. Has everything you need really unless you are doing PhD in combined mathematics and biochemistry then maybe you might need a more complex calculator but for most calculations it's all you need.

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Tags
Productivity
Information
  • Version1.6.7
  • UpdateApr 12, 2025
  • Developerallinonecalculator.com
  • CategoryProductivity
  • Requires AndroidAndroid 4.2+
  • Downloads8M+
  • Package Nameall.in.one.calculator
  • Signaturefe2fe259371e9528d42198532ecb8398
  • Available on
  • ReportFlag as inappropriate
Old Versions
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User Reviews
4.8 10 Reviews
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  • Grant Williams
    Grant Williams

    I felt so frustrated waiting for a response from the developers. Ads kept popping up, even though I paid for the app when it was first released. It drove me crazy. But then, they surprised me by removing the ads! This app truly stands out among all calculator applications. It has an impressive range of converters and specialized calculators. The user interface is sleek and beats most apps on the Play Store. If I had to pick just one calculator app, it would be this one without a doubt.

  • Rafael Neto
    Rafael Neto

    This calculator app stands out as the best I've ever tried. It's incredibly customizable, covering almost every calculation you'll need day to day. It offers 74 different calculation options ranging from length and area to speed and time. The coolest feature allows you to enter one value, like 1 mile for distance, and instantly see its equivalents in other measurements like kilometers or feet. It does have ads, but it functions seamlessly without Wi-Fi. For $5, you can upgrade to remove the ads permanently.

  • Michael Hagerty
    Michael Hagerty

    Using basic calculators on my devices felt limiting. Google's version worked, but it lacked features. Then I discovered this FREE calculator app. Wow! It offers so many functions. Simple calculations or complex equations, no problem. Need unit conversions? It handles that too. Overall, this app stands out as the best!

  • Asjad Hasan
    Asjad Hasan

    The next day, the ads and payment request vanished. It felt like magic. I explored the app's features, and it impressed me with its capabilities. Learning its functions was a breeze. In my original review, I mentioned installing the app through Play Pass but hadn’t used it yet. Ads were popping up, and there was a push for premium access, despite it being included in the Play Pass. I didn't know how to resolve that issue or if it was a problem on Google's end.

  • Carmela S
    Carmela S

    Just got this app, and it's incredible! Everything feels straightforward. So many options are available. Every now and then, an ad pops up, but it's not annoying at all. Need to convert units? No problem! It covers everything from temperature to weight, even shoe sizes and lengths for different genders and ages. It shows all calculations for each category, making things super easy. Plus, there's a handy calculator built right in. This app truly exceeds expectations!

  • Andre Goncalves
    Andre Goncalves

    This calculator truly lives up to its name. It works perfectly for what I need. The interface feels clean and smooth, making it simple to use. It handles all the functions you'd expect from a scientific calculator easily. On top of that, it includes various unit converters and other handy tools. Plus, there's an option to remove ads for a reasonable one-time payment. It's such a versatile app overall.

  • Mikael Mo
    Mikael Mo

    This calculator app impresses with its design and performance. I've made it my go-to tool on my last three phones, replacing the built-in Android calculator. It handles basic calculations effortlessly. The advanced mathematical features take it to another level. Everyday conversions come in handy too, making it versatile for all sorts of needs.

  • Alex
    Alex

    Wow, this app really impressed me! So many options to explore. I ended up picking 20 favorites that I know I'll use regularly. It's super fast and smooth, easy to navigate. The customization is great. No clutter or distractions, just a clean and modern design. I'm genuinely happy with it and find myself using it all the time.

  • Clarita Limurty
    Clarita Limurty

    This app does everything imaginable and even more. It stands out as the best calculator app I’ve come across, and I use it all the time. The convenience of getting all calculations laid out in one go is fantastic. No need to jot down numbers and switch to a different screen for further inputs. Just pick the results that matter. Sure, there are ads at the bottom of the screen, but they stay out of the way. No annoying full-screen interruptions like some other apps. I appreciate that. I don’t mind seeing those ads at all, especially since I keep my phone on airplane mode most of the day anyway.

  • Sylvester Ajibola
    Sylvester Ajibola

    This calculator leaves Google's calculator in the dust! The colors pop with “Material You” vibes, no pastel shades here. The clear button returns with a fun animation that just feels right. Swipe to find all the scientific functions easily. I'm a fan! The design looks great, and it even features graphing tools and conversion options galore. Getting rid of ads is absolutely worth it!

Security Status
Clean

It’s extremely likely that this software program is clean.

What does this mean?

We have scanned the file and URLs associated with this software program in more than 50 of the world's leading antivirus services; no possible threat has been detected.

  • Name: All-In-One Calculator
  • Package Name: all.in.one.calculator
  • Signature: fe2fe259371e9528d42198532ecb8398