Ohm Calc
Craigdsin Tools
Resistor color code calculator, Ohm's Law solver, and capacitor decoder tool
- Downloads
- 138+
- on Google Play
- Price
- Free
- No in-app purchases
- Updated
- Feb 7
- 2026 · v20.20.20
Screenshots
About Ohm Calc
Ohm Calc is an offline electronic toolkit designed for engineers, students, and hobbyists working with electronic components.
FEATURES:
• Resistor Color Code Calculator
- Select resistor color bands (black, brown, red, orange, yellow, green, blue, violet, grey, white)
- Choose first digit band, second digit band, and multiplier band
- View calculated resistance value in Ohms instantly
- Visual resistor representation with color bands displayed
• Ohm's Law Calculator
- Enter any two values from Voltage (V), Current (A), or Resistance (Ω)
- Calculate the missing third value automatically
- Supports V = I × R, I = V / R, and R = V / I calculations
- Pre-fills previously entered values when returning to the screen
• Capacitor Code Decoder
- Enter 3-digit capacitor codes (e.g., 104, 473)
- View capacitance value converted to pF, nF, or µF
- Numeric keypad interface for easy input
- Clear button to reset and enter new codes
• Calculation History
- View recent calculations on the dashboard
- Displays last 3 calculations with details
- History includes resistor values, Ohm's Law results, and capacitor values
- Clear history option available
• Minimalist Design
- Clean, card-based user interface
- Easy navigation between features
- About screen with version information
OFFLINE FUNCTIONALITY:
This app works completely offline. No internet connection required. No data is collected or transmitted.
DISCLAIMER:
This is a utility calculator app for educational and reference purposes. Always verify calculations for professional or safety-critical applications.
FEATURES:
• Resistor Color Code Calculator
- Select resistor color bands (black, brown, red, orange, yellow, green, blue, violet, grey, white)
- Choose first digit band, second digit band, and multiplier band
- View calculated resistance value in Ohms instantly
- Visual resistor representation with color bands displayed
• Ohm's Law Calculator
- Enter any two values from Voltage (V), Current (A), or Resistance (Ω)
- Calculate the missing third value automatically
- Supports V = I × R, I = V / R, and R = V / I calculations
- Pre-fills previously entered values when returning to the screen
• Capacitor Code Decoder
- Enter 3-digit capacitor codes (e.g., 104, 473)
- View capacitance value converted to pF, nF, or µF
- Numeric keypad interface for easy input
- Clear button to reset and enter new codes
• Calculation History
- View recent calculations on the dashboard
- Displays last 3 calculations with details
- History includes resistor values, Ohm's Law results, and capacitor values
- Clear history option available
• Minimalist Design
- Clean, card-based user interface
- Easy navigation between features
- About screen with version information
OFFLINE FUNCTIONALITY:
This app works completely offline. No internet connection required. No data is collected or transmitted.
DISCLAIMER:
This is a utility calculator app for educational and reference purposes. Always verify calculations for professional or safety-critical applications.
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