Use our Oblique Triangle Calculator to solve any triangle with any 3 known values in seconds
How It Works
The Oblique Triangle calculator solves for all unknown sides and angles of any triangle when you provide any three known values (sides, angles, or a combination).
Using trigonometric laws (Law of Sines, Law of Cosines) and geometric principles, it calculates all remaining triangle measurements, including area, perimeter, and height.
Key Features
- Solve any triangle with just 3 known values
- Calculate sides, angles, area, and perimeter
- Support for SSS, SAS, ASA, AAS, and SSA cases
How to Use
- Select which three values you know (sides and/or angles)
- Enter the known values in your preferred units
- Click calculate to solve the triangle
- View all calculated values including sides, angles, area, and more
- Use the diagram to visualize the solved triangle
Oblique Triangle Calculator
Universal Measurement Support
All calculators support both imperial and metric units
Common Applications
Universal Application
Solve any triangle problem, not just right triangles, for comprehensive geometry solutions.
Construction Precision
Calculate exact measurements for complex framing, roofing, and layout tasks.
Time Efficiency
Eliminate complex manual calculations that are prone to error.
Explore Other Features
Rafter
Use our Rafter Calculator to compute rafter lengths, plumb/seat cuts, tails and pitch for gable and skillion roofs
Right Angle Triangle
Use our Right Angle Triangle Calculator to simplify right-angle triangle calculations and solve any right triangle quickly and accurately.
Raked Walls
Use our Raked Walls Calculator to calculate stud lengths for raked walls with precision and ease