All-in-One Calculator FREE

All-In-One Calculator Free

Mindbox Apps


3 March 2018
4.2 and up
7.81 M
All-In-One Calculator is a free, lightweight, clean and easy to use calculator and unit converter.

Containing over 75 calculators and unit converters packed in with a scientific calculator with 40 vibrant color themes, it's the only math app you will ever need from now on on your device.

It's a great free calculator for school and homework, but not only. If you're a scholar, student, teacher. builder, handyman, contractor, etc.. and you need an all in one tool for your device, give this one a try. You will never be disappointed.


• Over 75 calculators and unit converters
• Simple / Scientific built-in calculator
• Percentage / Memory buttons
• Real-time function graphing
• HEX / BIN / DEC operations
• Editable input
• 40 Vibrant color themes
• Calculator history
• Currency converter with 160 currencies, available offline
• Supports math formulas as input
• Instant results
• Integrated search
• Favorite list for quick access
• Tablet support
• All features are free

Languages: English, Romanian

Complete list of all the calculators and unit converters
• Percentage calculator
• Proportion calculator
• Average calculator - arithmetic, geometric and harmonic means
• Equation solver - linear, quadratic and equation system
• Combinations and permutations
• Decimal to fraction
• Fraction simplifier
• Greatest common factor & Lowest common multiple calculator
• Random number generator

• Area / Perimeter calculator for square, rectangle, parallelogram, trapezoid, rhombus, triangle, pentagon, hexagon, circle, circle arc, ellipse
• Volume calculator for cube, rect. prism, square pyramid, sq. pyramid frustum, cylinder, cone, conical frustum, sphere, spherical cap, spherical frustum, ellipsoid
• Right triangle calculator
• Heron's formula (solve a triangle knowing the side lengths)
• Circle solver

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 161 currencies available offline
• VAT calculator
• Tip calculator
• Loan calculator
• Electricity cost calculator
• Cost of smoking calculator

• Ohm's law calculator - voltage, current, resistance and power
• Speed / Distance / Time
• Cylinder force calculator
• Resistance calculator
• Density calculator

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

• Elapsed time calculator

Developed in Transylvania 🇷🇴

Google Play Rating

 22,669 total

App Screenshots

What's New
    Version 1.5.4
    Added fraction result in the main calculator. Each time you enter of have a decimal result, the equivalent fraction will also be displayed.
    Updated proportion / ratio calculator. Added solution and refreshed the ui a bit.
    Fixed calculator mode back button. Now it will close the calculator instead of closing the whole app.

Download & Instructions

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