Circle Circumference Calc

Fantazey App

Contains ads

About this app

Circle Circumference Calculator — the most complete tool to calculate the circumference of a circle using any known parameter.

Calculate circumference from:
- Radius
- Diameter
- Area of the circle
- Diagonal of the inscribed rectangle
- Side of the circumscribed square
- Sides and area of an inscribed triangle
- Area and semi-perimeter of the circumscribed triangle
- Side of an inscribed regular polygon

Whether you are a student learning geometry, a teacher explaining formulas, or just need quick accurate results — this app is for you.

Key Features:
- Multiple input methods (the only app with so many unusual ways to calculate circumference)
- Instant precise calculations with formula π
- Clean and simple interface
- Works completely offline
- No unnecessary permissions
- Educational focus — helps develop interest in mathematics

Formulas included:
C = 2πr
C = πd
C = 2√(π·Area)

and many more derived formulas for inscribed/circumscribed figures.
Perfect for school, university, engineering and everyday geometry tasks.
The main goal of this application is to spark cognitive interest in mathematics through practical calculations.
Download now and discover how easy and interesting geometry can be!

What’s new

New in this update: 4 in-depth articles on real-world applications of circle formulas — engineering, architecture, CNC machining, and student guides. Find them in the Articles section of the menu.