CalcKit: All-In-One Calculator

Contains adsIn-app purchases
11.3K reviews
Content rating
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About this app

CalcKit is a simple but powerful collection of calculators and converters for math, electronics, finance, and more.

Designed with simplicity in mind, it helps you solve all kinds of everyday problems.

From simple calculations to unit and currency conversions, percentages, proportions, areas, volumes, etc… it does it all.

Featuring over 150 FREE Calculators and Unit Converters, packed with a highly customizable Scientific Calculator, it's the only calculator you'll need on your device from now on.

Scientific Calculator
★ Instant results
★ Copy and paste support
★ Customizable scientific keypad
★ Editable input & cursor
★ Memory buttons
★ Advanced calculation history
★ Floating calculator widget

150 Calculators & Converters
★ Algebra, Geometry, Electronics, Finance, Unit Converters & Misc
★ Currency converter with 180 currencies and crypto, available offline
★ Instant results as you type
★ Smart search for faster navigation
★ Create shortcuts on home screen

Custom Calculators
★ Custom tools builder for creating your own calculators
★ Up to 25 variables per calculator
★ Detailed tutorial with examples

• Percentage calculator
• Proportion calculator
• Average calculator - arithmetic, geometric and harmonic means
• Equation solver - linear, quadratic, cubic and equation systems
• Combinations and permutations
• Decimal to fraction
• Fraction simplifier
• Prime number checker
• Greatest common factor & Least common multiple
• Matrix calculator

• Triangle, right triangle, square, rectangle, parallelogram, rhombus, trapezoid, hexagon, polygon, circle, circular segment, circular sector, ellipse
• Cube, cuboid, prism, pyramid, pyramidal frustum, tetrahedron, octahedron, cylinder, truncated cylinder, cone, conical frustum, sphere, spherical cap, spherical sector, spherical segment, spherical wedge, torus

• Resistor color code - up to 6 bands
• Inductor color code
• LED resistor calculator
• Series and parallel components - resistors, capacitors, inductors
• Ohm's law
• Power triangle
• Y-Δ Transformation
• Voltage divider
• Voltage regulator - LM317
• Operational amplifier
• NE555 timer calculator
• Filters calculator
• Reactance and resonance calculator
• Wire resistance and conductance
• Transformer ratio
• Battery life calculator
• Analog-Digital converter
• Frequency calculator

• Currency converter with 180 currencies and crypto, available offline
• Sales tax calculator
• Tip calculator
• Simple and compound interest calculator

Unit Converters
• Angle converter
• Area converter
• Cooking converter
• Data storage converter
• Energy converter
• Force converter
• Fuel converter
• Length converter
• Weight converter
• Numeric base converter
• Power converter
• Prefixes converter
• Pressure converter
• Roman numerals converter
• Shoe size converter
• Speed converter
• Temperature converter
• Time converter
• Volume converter
• Acceleration converter
• Airflow converter
• Density converter
• Inertia converter
• Torque converter
• Voltage converter
• Current converter
• Charge converter
• Conductance converter
• Field strength converter
• Resistance converter
• Resistivity converter
• Capacitance converter
• Inductance converter
• Flow converter
• Flux converter
• Permeability converter
• Viscosity converter
• Heat converter
• Light converter
• Magnetism converter
• Radiation converter
• Frequency converter
• and more…

• Date calculator
• Time calculator
• Analytical geometry - distance between 2 points, area of triangle, equation of circle and equation of sphere
Updated on
Nov 20, 2022

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
App info and performance and Device or other IDs
Data is encrypted in transit
You can request that data be deleted
11.3K reviews
Wayne Hynd
September 14, 2022
Whoa! There are a lot of great tools here... Check out the FAQs, because the deep capabilities are somewhat hidden behind the clean simplicity. All kinds of calculators: standard stuff (volume, speed, distance, cooking, etc, ) but, also more esoteric stuff: board-feet, analytical geometry, numeric base, Roman numerals!; if it can be calculated it's probably here; and if not you can roll your own! The dev responded to my feature suggestion almost immediately, and implemented within a few hours!
16 people found this review helpful
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Jacob S.
June 20, 2022
I've been relying on this app for many years now and it has never let me down. It always has what I need, when I need it, and finding it is speedy. The UI flows very nicely. The ability to create custom calculations and converters really sets this app apart. Specially useful for all the different branches of industries, research, and technical trades one may be working in. I rarely leave reviews but this app deserves it. Keep up the great work who ever y'all are.
14 people found this review helpful
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June 23, 2022
Thank you very much for the great review. Really appreciate it!
A Google user
July 17, 2019
Awesome app! I like to be able to convert measures for a lot of everyday things like cooking, temperatures or miles and usually I will do an online search and have to hop around until I find a simple answer without having to read a page of text that goes along with those converter(s). This app in contrast puts everything in one place. Pretty simple to use after exploring all the things it has to offer, which is a lot. Very good time saver. Highly recommended!
32 people found this review helpful
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What's new

CalcKit v4.3.1

• Added "000" button to the Edit Buttons menu
• Renamed Voltage Regulator to LM317 Calculator
• Added some new tools to the Community Library
• Added pop-up menu to select variable name (A-Z) when adding variables to custom tools
• Added new units to the weight (1) and pressure (3) converter
• Added option to change the icon style to square
• Updated all libraries to the latest versions

If you find any problem, please contact us and we will try to resolve it as soon as possible!