Triangle Calculator

• Triangle calculator that computes sides, angles, area, perimeter, altitudes, medians, and angle bisectors from SSS, SAS, ASA, AAS, SSA, or right-triangle (Rt△) inputs
• Calculations run locally in your browser and the result is shown as both a diagram and numeric values

1. Open the tool page — no download or installation needed
2. Pick the known-condition type (e.g. SSS, SAS, right triangle) and enter the corresponding side lengths or angles
3. Click "Calculate" to get the result, then use "Copy Result" to copy the values or "Example" to load a sample

• This tool is completely free and requires no sign-up
• Everything runs locally in your browser — your data never leaves your device

Free online triangle calculator supporting SSS, SAS, ASA, AAS, SSA calculations. Calculate triangle sides, angles, area, perimeter, altitudes, medians, angle bisectors with real-time visualization.

Open the tool page — no download or installation needed Pick the known-condition type (e.g. SSS, SAS, right triangle) and enter the corresponding side lengths or angles Click "Calculate" to get the result, then use "Copy Result" to copy the values or "Example" to load a sample

This tool is completely free and requires no sign-up Everything runs locally in your browser — your data never leaves your device

Yes, Triangle Calculator is completely free. No download or installation required — it runs right in your browser.