Resistor Value Calculator
Resistance from band values and tolerance.
Enter your values
Results update instantly as you type — no submit needed.
Results
- Resistance
- 47 kΩ
- Tolerance range
- 44650 – 49350 Ω
- Exact value
- 47,000 Ω
- Tolerance
- 5%
Quick answer
Resistor value is the significant digits multiplied by the multiplier band.
R = digits × 10^multiplier
How to use the Resistor Value Calculator
- 1Enter the first two band digits.
- 2Enter the multiplier band as a power of ten.
- 3Set the tolerance band percentage.
Frequently asked questions
What colour is multiplier 3?
Orange — 4, 7, orange gives 47 kΩ.
Why does tolerance matter?
In timing and divider circuits a 5% part can shift behaviour noticeably.