Best Triangle Calculator App

209+ iOS apps curated and reviewed

4.5 avg rating
18 free apps
Updated June 2026

With an average user rating of 4.5★, the triangle calculator app category is one of the App Store's strongest. Browse all 209+ apps we track, sorted so the most loved ones surface first.

Top Picks for Triangle Calculator App

Triangle Calculator#1

Triangle Calculator by Kent Johansson

Right angle triangle solver
Editor's Choice
📊 Productivity
5.0(2 ratings)
Free
Triangle Calculator screenshot 1
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This application calculates and solves right-angle triangles, determining lengths, angles, area, and perimeter with just two known values, and displays a proportionally correct visual representation. Try it out to solve triangles, customize display settings, and reuse recent calculations with ease.

Trigonometry Calculator.#2

Trigonometry Calculator. by Horitech

Simple Triangle Calculator
Strong Contender
🔧 Utilities
5.0(3 ratings)
FreeAdsIn-App Purchases
Trigonometry Calculator. screenshot 1
Trigonometry Calculator. screenshot 2
Trigonometry Calculator. screenshot 3
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Trigonometry Calculator. screenshot 6

A simple and high-precision calculator for right-angled triangles that quickly determines key values such as sides, angles, and area based on known values. Try it out for accurate and efficient calculations in a user-friendly interface.

Figure calculator ShapeInfo#3

Figure calculator ShapeInfo by Noriyasu Kutsuzawa

Geometric shape calculator
Worth Considering
📊 Productivity
4.7(134 ratings)
FreeAds
Figure calculator ShapeInfo screenshot 1
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This geometric shape calculator helps users calculate lengths, angles, and areas of various shapes, including triangles, circles, and ellipses, as well as volumes of 3D objects. Simply choose a shape, enter values, and get instant calculations, making it a useful tool for students, engineers, and professionals.

More Triangle Calculator App apps to explore

4
Trig Solver
Trig Solver
Trig Solver
by Creature Code Mobile, LLC
Free
🔧 Utilities
(78)
5
Geometry Calculator lite
Geometry Calculator lite
Geometry Calculator lite
Circle,Triangle,Cylinder,cube
Free

This application calculates key parameters of various geometric shapes, including 2D and 3D forms, with over 783 calculations, making it a valuable tool for students, engineers, and professionals. Explore and calculate shapes like circles, triangles, cylinders, and cubes with ease, and discover their properties in interactive 3D.

📚 Education
(77)
6
Trigonometry Help Lite
Trigonometry Help Lite
Trigonometry Help Lite
Triangle Calculator + Workings
Free

Find unknown angles and sides of triangles with Trig Help, a simple triangle calculator. Quickly solve trigonometry problems with ease.

📚 Education
(688)
7
Triangle Calculator Pythagoras
Triangle Calculator Pythagoras
Triangle Calculator Pythagoras
Right Triangle Pythagoras
Free

This essential geometry tool quickly and accurately solves complex right-angled triangle problems, providing instant answers with clear explanations. Perfect for students and professionals, it offers a range of features, including Pythagorean theorem solving, trigonometry functions, and instant area and perimeter calculations.

📚 Education
(1)
8
Triangle Solver
Triangle Solver
Triangle Solver
by William Jockusch
Free

Quickly and easily calculate the unknown sides and angles of a triangle with just a few known values. Enter the known measurements, and get the rest calculated instantly.

📚 Education
(30)
9
Construction Calculator
Construction Calculator
Construction Calculator
Feet Inch Calculator
Free

A top-rated Construction Calculator designed for iPhone and iPad, catering to carpenters' needs for precise inch, feet, and fraction calculations. Packed with user-friendly features and an elegant design for seamless usability. Experience award-winning accuracy at your fingertips – download now for professional construction calculations!

🔧 Utilities
(554)
10
Triangle Angles Calculator
Triangle Angles Calculator
Triangle Angles Calculator
With convenient visual input
Free

This comprehensive geometry tool allows users to easily calculate various parameters of different types of triangles, including sides, angles, perimeter, and area, with a simple and intuitive interface. Perfect for students, teachers, and professionals, it provides accurate results with precision, working offline and supporting both metric and imperial units.

📊 Productivity
(0)
11
Triangle & Angle calculator
Triangle & Angle calculator
Triangle & Angle calculator
Geometry, angle, formulas
Free

The application is a comprehensive geometry and angle calculator, allowing users to efficiently solve exercises and verify their calculations with a simple click. It provides a user-friendly interface and includes a range of formulas and tools to assist users in their geometry and angle-related tasks.

📚 Education
(209)
12
Triangle Calculators
Triangle Calculators
Triangle Calculators
by V PUGAZHENTHI
Free
📚 Education
(1)
13
Triangle Solver Free - Geometry Calculator
Triangle Solver Free - Geometry Calculator
Triangle Solver Free - Geometry Calculator
by 境 饶
Free

This triangle calculator solves right and irregular triangles by entering a few values and calculating the rest, making it a useful tool for geometry calculations. Try it out to easily solve triangles and get the results you need.

📊 Productivity
(40)
14
Calculator #
Calculator #
Calculator #
Scientific Calculator
Free

Calculate complex mathematical equations effortlessly with this intuitive app. Simplify your calculations on the go with advanced features like graph plotting and equation solving. Download now to supercharge your math skills!

🔧 Utilities
(36K)
15
Calculator ∞
Calculator ∞
Calculator ∞
The Best Scientific Calculator
$5.99

A top-rated scientific calculator app on iOS devices offering advanced math functions with a user-friendly interface for users of all levels. Features include step-by-step solutions, math photo solving, and handwriting recognition. Enhance your calculations with this versatile tool.

📚 Education
(6.2K)
16
Calculator +
Calculator +
Calculator +
Scientific Calc Plus Fraction
Free

Experience the award-winning calculator app for iPad and iPhone, offering a free basic and scientific calculator with an elegant design, simple usability, and beautiful interface. Calculate with ease and precision today!

🔧 Utilities
(9.6K)
17
Graphing Calculator X84
Graphing Calculator X84
Graphing Calculator X84
Designed for use with Ti-84
Free

A powerful graphing calculator app designed for all users, offering both basic and advanced mathematical functions with a user-friendly interface. Equipped with a robust math core and support features for engineers and math students. Explore built-in documents and tutorials for a comprehensive mathematical experience.

📚 Education
(50K)
18
Calculator for iPad!
Calculator for iPad!
Calculator for iPad!
Basic & Scientific Calculator
Free

Quickly crunch numbers with our user-friendly iPad calculator app that offers basic and scientific functions. Download now for accurate calculations on the go!

🔧 Utilities
(60K)
19
Calculator for iPad₊
Calculator for iPad₊
Calculator for iPad₊
Basic, Scientific, Plus Calc
Free

A powerful math solver and scientific calculator for iPad and iPhone, featuring advanced functions and quick calculations. Share your results easily and master your business expenses with percentage calculations. Get it now!

🔧 Utilities
(126K)
20
Graphing Calculator Plus AI
Graphing Calculator Plus AI
Graphing Calculator Plus AI
Scientific Graphing Calculator
$5.99

An advanced scientific graphing calculator app that is user-friendly and suitable for basic to advanced mathematics, offering a powerful math core and extensive support features. Ideal for engineers, math students, and more, with built-in documents for various calculations. Explore the world of advanced mathematics with ease and efficiency.

📚 Education
(12K)