OhmKit - Resistor Calculator
Resistor & Circuit Toolkit
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Decode resistor color codes and SMD markings, calculate Ohm’s law and LED circuits, and organize projects with BOM, PDF and CSV tools—in 13 languages.
OhmKit is a resistor calculator and electronics toolkit designed for engineers, technicians, students, makers, and electronics enthusiasts.
Decode resistor color codes and SMD markings, calculate circuit values, find suitable standard resistors, and organize your components and projects in one clean app.
CALCULATORS
• Decode 3, 4, 5, and 6-band resistor color codes
• Convert resistance values into color bands
• Decode and encode SMD resistor markings
• Calculate series and parallel resistors
• Find target resistance combinations using standard E-series values
• Calculate voltage, current, resistance, and power with Ohm’s law
• Design series and parallel LED circuits
• Calculate voltage dividers
• Calculate resistor power and recommended power ratings
• Automatically convert engineering units
PROJECT TOOLS
• Save calculation history and favorites
• Create reusable presets
• Organize components into projects and bills of materials (BOM)
• Export project data as PDF or CSV
• Back up and restore supported local data
• Copy and share calculation results
• Access built-in electronics references
DESIGNED FOR EVERYDAY USE
• Clear circuit diagrams and standard electrical symbols
• Light and dark themes
• Adjustable calculator and display preferences
• Interface available in 13 languages
• Core calculations run locally on your device
The free version contains ads. OhmKit Pro removes ads and unlocks additional workflow features. Purchases are securely processed through the App Store.
Calculation results are provided as engineering aids. Always verify component ratings and manufacturer specifications before building or powering a circuit.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, YAVUZHAN CANAKCI, 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:
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- YAVUZHAN CANAKCI
- Size
- 33.1 MB
- Category
- Utilities
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 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+
- In-App Purchases
Yes
- Remove Ads $1.99
- Copyright
- © Copyright 2026 OhmKit