Circle Calculator - Geometry
Education
Free · In-App Purchases · Designed for iPad. Not verified for macOS.
NEW — WORKSHOP PACK FOR FABRICATORS
• Offline pipe size chart (DN/NPS, SCH 10S/40/80, kg/m)
• Metal weight: bar, pipe, plate, hex × 7 materials
• Bolt circle (PCD) → X/Y drill coordinates, PDF/CSV/DXF
• Sheet-metal cone patterns with DXF export (CNC/laser)
• Pipe cut wrap templates — print true-size (1:1) and trace
Circle Calculator - Geometry is the ultimate all-in-one geometry toolkit trusted by students, engineers, architects, and math enthusiasts worldwide.
CIRCLE CALCULATIONS
- Instantly calculate radius, diameter, circumference, and area
- Enter any value and all others update automatically in real time
- Adjustable decimal precision from 1 to 5 places
- Beautiful visual circle diagram with live updates
25+ GEOMETRY SHAPES & FORMULAS
- Triangles: equilateral, isosceles, right, scalene
- Quadrilaterals: square, rectangle, parallelogram, trapezoid, rhombus
- Polygons: pentagon, hexagon, heptagon, octagon, and more
- Ellipse, sector, segment calculations
- 3D solids: sphere, cylinder, cone, cube, pyramid, prism
- Area, perimeter, surface area, and volume for every shape
POWERFUL UNIT CONVERTER
- Length: mm, cm, m, km, inch, foot, yard, mile
- Area and volume unit conversions
- Instant real-time results
DESIGNED FOR EVERYONE
- Dark mode, light mode, and AMOLED black theme
- 10 languages: English, Turkish, German, French, Spanish, Portuguese, Arabic, Russian, Japanese, Chinese
- Clean, modern Material Design 3 interface
- Calculation history and favorites
- Share and export your results
CIRCLE CALCULATOR PRO
Upgrade to Pro to unlock the full experience:
- Ad-free calculations
- Unlimited calculation history
- Access to all 25+ shape calculators
- Priority support
SUBSCRIPTION INFORMATION
Circle Calculator Pro is available as an auto-renewable subscription:
- Weekly: $3.99/week
- Monthly: $9.99/month
Payment will be charged to your Apple ID account at confirmation of purchase. Subscription automatically renews unless canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions by going to Settings > Apple ID > Subscriptions.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://demrdev.github.io/privacy-policy/circle_calculator/
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
Workshop Pack for fabricators:
• Pipe size chart (DN/NPS) — fully offline
• Metal weight calculator (7 materials)
• Bolt circle (PCD) drill coordinates + DXF
• Cone flat patterns with DXF export
• Pipe cut templates — print 1:1
Plus: annual plan, what's-new screen, full translations in 10 languages.
The developer, AHMET DEMIR, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
- Usage Data
Data Linked to You
The following data may be collected and linked to your identity:
- Purchases
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- AHMET DEMIR
- Size
- 56.3 MB
- Category
- Education
- Compatibility
Requires iOS 13.0 or later.
- iPhone
Requires iOS 13.0 or later. - iPad
Requires iPadOS 13.0 or later. - iPod touch
Requires iOS 13.0 or later. - Mac
Requires macOS 11.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- Circle Pro Monthly USD 3.99
- Circle Pro Weekly USD 1.99
- Copyright
- © 2026 Ahmet Demir