45 45 90 Triangle Calculator
Fantazey App Productivity Contains ads
Instantly calculates the area of a triangle with angles 45, 45 and 90 degrees
- Downloads
- 7.9K+
- on Google Play
- Price
- Free
- No in-app purchases
- Updated
- Jul 9
- 2026 · v2.0.0
Screenshots
About 45 45 90 Triangle Calculator
Ultra-accurate application for calculating the sides of the cathetes and hypotenuse of a triangle with two interior angles of 45, 45 and one right angle of 90 degrees.
A triangle of this type is both right-angled and isosceles.
A 45 45 90 triangle is a square divided by two opposite angles on the diagonal.
Calculates the lengths of the two unknown sides of the cathetus and hypotenuse, as well as the area and perimeter of the special triangle. The supercalculator uses the right triangle formula and Pythagoras' theorem.
Input rules allow input of integers and decimals.
A triangle of this type is both right-angled and isosceles.
A 45 45 90 triangle is a square divided by two opposite angles on the diagonal.
Calculates the lengths of the two unknown sides of the cathetus and hypotenuse, as well as the area and perimeter of the special triangle. The supercalculator uses the right triangle formula and Pythagoras' theorem.
Input rules allow input of integers and decimals.
What’s new
Version 2.0.0 · Updated July 9, 2026
New Calculation history — every result is saved automatically; tap any past entry to reuse it, or share it directly from the app Animated triangle diagram that shows your entered values live, right on the triangle Quick access to History from the side menu Improved Cleaner, easier-to-read format when sharing your calculations History section now has its own clearly separated design on the main screen
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| App | Rating | Price | Installs | Last updated | Compare |
|---|---|---|---|---|---|
| 45 45 90 Triangle Calculator | – | Free | 5,000+ | Jul 9, 2026 | |
| Circumference of a circle | – | Free | 50,000+ | Jul 6, 2026 | Compare |
| Circle Segment Calculator | – | Free | 5,000+ | – | Compare |
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| Geometry calculator app | – | Free | 50+ | Aug 30, 2023 | Compare |
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| Area of a triangle calculator | – | Free | 1,000+ | Aug 7, 2026 | Compare |