Area of Semicircle Calculator
Enter the radius to calculate the area of a semicircle.
Area of Semicircle Calculator - Instantly Calculate Half-Circle Area Online
The Area of Semicircle Calculator is a simple and efficient tool that helps you calculate the area of a semicircle using its radius, diameter, or circumference. Whether you're working on geometry homework, planning a semicircular patio, or designing a curved layout, this calculator provides accurate results in square units instantly.
🌓 What Is the Area of a Semicircle?
A semicircle is half of a full circle. Therefore, its area is exactly half the area of a circle with the same radius. The area of a semicircle is measured in square units (like cm², m², in², etc.) and is widely used in architecture, landscaping, and mathematics.
📐 Area of a Semicircle Formula
Where:
- π (Pi) ≈ 3.1416
- r is the radius of the semicircle
Alternative formula (using diameter d):
✍️ Example Calculation:
If the radius of a semicircle is 7 cm:
✅So, the area of the semicircle is approximately 76.97 square centimeters
🔧 Features of the Area of Semicircle Calculator:
- Accepts input in radius, diameter, or circumference
- Compatible with all units: cm, m, ft, in, etc.
- Instant results with step-by-step display (optional)
- Mobile-friendly and easy to use
- Completely free – no signup required
📚 Common Uses of Semicircle Area Calculation:
💡 Why Use This Semicircle Area Calculator?
- Quick and accurate – no manual calculations needed
- Saves time and reduces errors
- Great for students, teachers, engineers, and DIYers
- Always accessible from any device
Quickly find the area of any semicircle with our Area of Semicircle Calculator – the smart tool for effortless and reliable geometric calculations.