All-In-One Calculator

Calculator (Package Name: all.in.one.calculator) is developed by allinonecalculator.com and the latest version of All-In-One Calculator 3.3.4 was updated on June 20, 2026. All-In-One Calculator is in the category of Productivity. You can check all apps from the developer of All-In-One Calculator and find 200 alternative apps to All-In-One Calculator on Android. Currently this app is for free. This app can be downloaded on Android 7.0+ on APKFab or Google Play. All APK/XAPK files on APKFab.com are original and 100% safe with fast download.

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 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
So, on with the features...
MAIN CALCULATOR
• Clear design with big buttons
• Multiple calculator layouts
• Editable input & cursor
• Copy & paste support
• Scientific functions
• Fraction calculator
• Calculation history
• Memory buttons
• Home widget
75 CALCULATORS & CONVERTERS
• Algebra, Geometry, Unit Converters, Finance, Health, Date & time
• Currency converter with 160 currencies (available offline)
• Instant results delivered as you type
• Smart search for faster navigation
Algebra
• Percentage calculator
• Proportion calculator
• Ratio calculator
• Average calculator - arithmetic, geometric and harmonic means
• Equation solver - linear, quadratic and equation system
• Greatest common factor & Lowest common multiple calculator
• Combinations and permutations
• Decimal to fraction
• Fraction simplifier
• Prime number checker
• Random number generator
Geometry
• 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
Finance
• Currency converter with 160 currencies available offline
• Unit price calculator
• Sales tax calculator
• Tip calculator
• Loan calculator
• Simple / Compound interest calculator
Health
• Body mass index - BMI
• Daily calories burn
• Body fat percentage
Date & time
• Age calculator
• Add & subtract - Add or subtract years, months, days, hours and minutes from a date
• Time interval - Calculate the difference in time between two dates
Miscellaneous
• Mileage calculator
• Ohm's law calculator - voltage, current, resistance and power
Developed in Transylvania 🇷🇴

Calculator 3.3.4 Update

• Added step-by-step solutions to results
• Improved search functionality