Area of Triangle Calculator

Enter base and height to compute the area instantly.

Base

Height

About Area of Triangle

The Area of Triangle Calculator is a fast, accurate, and user-friendly tool that helps you calculate the area of any triangle using different input methods. Whether you're a student solving geometry problems or a professional estimating space for construction or design, this calculator provides precise results in just seconds.

What Is the Area of a Triangle?

The area of a triangle is the total space enclosed by its three sides. It is measured in square units (cm², m², ft², etc.) and depends on the base and height—or in some cases, all three sides. This fundamental concept in geometry is widely applied in education, architecture, engineering, and everyday calculations.

Common Formulas for Area of a Triangle:

1. Using Base and Height:

Area = (1/2) × base × height

2. Using Heron's Formula (when all sides are known):

s = (a + b + c) / 2
Area = √[ s × (s − a) × (s − b) × (s − c) ]

Where a, b, c are the triangle side lengths and s is the semi-perimeter.

Example Calculation:

If a triangle has a base of 10 cm and a height of 6 cm, then:

Area = (1/2) × 10 × 6 = 30 cm²

✅ So, the area of the triangle is 30 square centimeters.

Features of the Calculator:

Multiple Inputs – Use base/height or all sides.

Automatic Formula – Applies the right method for you.

All Units – Supports cm, m, ft, in, and more.

Instant Results – Clean, simple, and 100% free.

Popular Uses

Education – Geometry homework and classwork.

Construction – Land measurement and planning.

Design – Interior, architectural, and graphics projects.

DIY & Craft – Creative and hobby projects.

Quickly calculate the area of any triangle with this calculator – your go-to tool for fast, accurate, and reliable results every time!