All-In-One Calculator

Name: All-In-One Calculator
Availability: InStock
Rating: 4.5653181076049805 (170415 reviews)
Author: allinonecalculator.com

allinonecalculator.com

Contains adsIn-app purchases

170K reviews

Everyone

10M+

Downloads

Editors' Choice

Enjoy this app for free, plus many more free of ads and in-app purchases, with a Google Play Pass subscription. Learn more

Everyone

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About this app

All-In-One Calculator combines a clean scientific calculator with 50+ calculators and unit converters for everyday use. Get more from your calculator — for FREE!

🏆 Trusted by over 10 MILLION users worldwide!

Scientific calculator
• Trigonometry, logarithms, exponents
• Graphing calculator: plot functions
• Complex number support (√-1 → i)
• Fraction results (0.3333 → 1/3)
• Memory buttons: MC, M+, M-, MR
• Calculator history with notes

Currency converter
• 160+ currencies, live exchange rates
• Convert multiple currencies at once
• Works 100% offline

Unit converter
• Length, weight, volume, temperature
• Area, speed, pressure, power, energy
• Digital storage, cooking, shoe size
• Regional, historic & scientific units
• Combined units (ft + in, L + mL)

Math calculators
• Percentage calculator & discount
• Average & proportion calculator
• Equation solver: linear, quadratic, etc.
• Area & volume of shapes and bodies
• Step-by-step solutions

Finance calculators
• Tip calculator & sales tax calculator
• Loan & interest calculator
• Unit price comparison

Date & health
• Age calculator & date calculator
• Time between two dates
• BMI, body fat & calorie calculator

Extra features
• Cloud sync across your devices
• Calculator widget for your home screen
• Simple, classic & modern layouts
• AMOLED dark theme to save battery

👋 A note from the developer

Hi, I'm Andrei, the developer behind this app. My goal since 2016 has been to create the most comprehensive, clean and easy-to-use calculator on the market, continuously improving it based on your feedback.

Try it out and let me know what you think!

The original All-In-One Calculator with Unit & Currency Converter

Updated on

Aug 11, 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.

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

165K reviews

Nel Mu

May 15, 2026

Samsung phone somehow did not come with calculator pre installed, go figure, so I downloaded this one. Easily one of the best apps, even has dark mode & a bit of customization options. Lots of measurements, conversion tools, and extras. 10/10. Edit: 2026, they changed the layout and added intrusive ads. Skip this. 1 out of 5 now.

14 people found this review helpful

allinonecalculator.com

May 17, 2026

Hi Nel. Ads are there in order to make this app available free for everyone. If you try the app and want to make it yours, you can purchase the ad free version, at the price of 2-3 coffees. Developing this app takes time and money, and I hope the features it provides really makes up for that. Andrei, the guy who made this app.

Norman Hayes

November 27, 2022

Solid, dependable and better than a Swiss army knife. It can do everything. I use it to cook my eggs for breakfast and hammer nails - one of the most versatile apps available. Did I mention it mines bitcoin? All kidding aside - it speaks seven languages and shoots an insane game of snooker. By the way, easily the best calculator on the Google Play Store. 4.95 stars - it's not perfect, nothing is.

5 people found this review helpful

David Finkel

May 13, 2020

Absolutely brilliant! It has every kind of calculation I could imagine, and some I couldn't imagine. There are all the usual calculations: 4-functions, scientific, convert length, time, weight units. There are time calculations, like the number of days (or seconds) between two dates. Even an up-to- the- minute (literally) currency converter. It's easy to find the calculation you want. There's a list of favorites, or you scroll through all calculations, even use voice input.

36 people found this review helpful