SMD Resistor Calculator

Instantly decode the value of any SMD (surface-mount) resistor by entering its printed marking code.

Whether you're repairing a circuit board, sorting components, or learning electronics, this app gives you a fast and reliable way to read all standard SMD resistor markings — no lookup tables, no guesswork.

Supported marking systems:
- 3-digit EIA (e.g. 472 → 4.70 kΩ)
- 4-digit EIA (e.g. 4702 → 47.0 kΩ)
- EIA-96 (e.g. 64S → 45.3 Ω)
- 2-character (e.g. W4 → 68.0 kΩ) — legacy code, common on older boards

All based on the IEC 60062 international standard.

Key Features
- All 4 standard SMD marking systems in one app
- Tap digits and letters — resistance value appears instantly
- Last selection remembered across sessions
- Light & dark mode — follows your system theme automatically
- Works completely offline
- Clean, distraction-free interface

Perfect for electronics engineers, repair technicians, vintage electronics enthusiasts, makers, hobbyists, and students working with SMD components.

Download now and keep a complete SMD reference in your pocket.

Recent changes:
First release of SMD Resistor Calculator.

Decode any SMD resistor marking instantly - supports all 4 standard systems:
• 3-digit EIA (e.g. 472 → 4.70 kΩ)
• 4-digit EIA (e.g. 4702 → 47.0 kΩ)
• EIA-96 (e.g. 64S → 45.3 Ω)
• 2-character legacy codes (e.g. W4 → 68.0 kΩ)

Light & dark mode. Works completely offline.