Triangle Calculator Pro

4.4
150 reviews
1K+
Downloads
Content rating
Everyone
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About this app

Ad free version!

Solve triangles by entering two sides and one angle, two angles and one side or three sides to find remaining values as used in trigonometry.

Angles are available in degrees, radians, grads or degrees with minutes and seconds.

The ▲² button shows second solution if one exists (ambiguous case).

The free version has over 1 million downloads!

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Updated on
Sep 2, 2024

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
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No data collected
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Ratings and reviews

4.4
141 reviews
Cornpop
November 10, 2021
Simple to use, accurate, and easy to configure. Works great for construction, site surveying, etc. Just choose between right triangle or isosceles triangle, then fill in the known values, hit the calculate button and the results are given. To set the calculator outputs, hit the three dots at the top of the screen. Precision: how many digits output (0, 1, 2, 3, 4, or 5). Angle Units: (decimal degrees, rad, grad, deg-min-sec).
4 people found this review helpful
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Brendan
October 17, 2025
Great little app. Simple and easy to use. Perfect for use in the workshop for calculating lengths and angles when fabricating structures. The only improvement would be if the triangle image could be rotated, so the triangle matches what I'm building.
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Trevor Perks
May 27, 2022
Hi All. I needed to work out metal sizes for some adjustable solar panel brackets. This app made it easy, thanks. I would like the result to display the formula "for an added feature" if that would be possible, to help my old brain cells remember how I used to do calculations like this. 👍😃
1 person found this review helpful
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What’s new

Android API update.