All-In-One Calculator

Name: All-In-One Calculator
Availability: InStock
Rating: 4.364864826202393 (170222 reviews)
Author: allinonecalculator.com

allinonecalculator.com

Contains adsIn-app purchases

170K reviews

PEGI 3

10M+

Downloads

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

PEGI 3

Learn more

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 12, 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

Nic Bennett

April 22, 2025

It is no longer useful, so I'll be uninstalling it. This used to be a reasonable calculator in a sea of clutter, not perfect, but at least useable. No longer. They couldn't resist screwing it up & jazzing it up for no purpose. Now, it doesn't even open in the calculator and ads at most steps. It takes even longer to get to any converters. Thanks - in a world where simple is nice, even desirable, you've overcomplicated the basics.

15 people found this review helpful

Ilia Kowalzik

July 26, 2025

I downloaded this app for the widget, but the widget is very imprecise. 1/100 and 1/160 both gave me 0.01. Not really useful for me since I want more than two decimal places. The app itself does the math right and seems to have a lot of useful tools, so it's worth giving a look. I'm not going to delete it yet, but I might if I don't find myself using the other functions.

64 people found this review helpful

A Google user

January 28, 2019

Really good app. It can be used as a basic calculator but has loads of other options. E.G In the financial dep't apart from the usual sections there's a loan calculator and a tip calculator to name just a couple. The same goes for the unit converter there are extras including a shoe size guide, digital storage conversion and more. Only down side is the ads. They tend to appear when you're clicking back to the previous page.

49 people found this review helpful