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Calcimator

Resistor Color Code Calculator

Decode resistor color bands to find resistance value, tolerance range, and minimum/maximum resistance. Includes color code reference table.

Inputs

Results

Resistance

4.7 kΩ

Tolerance5%
Min Resistance4,465 Ω
Max Resistance4,935 Ω

Resistance

4.7 kΩ

How to Use This Calculator
  1. Start by filling in the input fields below. Results update instantly as you type, so you can experiment with different values to see how they affect the outcome.
  2. Band 1 (1st Digit) — Color of the first resistor band. Choose from: Black (0), Brown (1), Red (2), Orange (3), Yellow (4), Green (5), Blue (6), Violet (7), Gray (8), White (9). default: 4.
  3. Band 2 (2nd Digit) — enter your preferred option from the dropdown. Choose from: Black (0), Brown (1), Red (2), Orange (3), Yellow (4), Green (5), Blue (6), Violet (7), Gray (8), White (9). default: 7.
  4. Band 3 (Multiplier) — enter your preferred option from the dropdown. Choose from: Black (×1), Brown (×10), Red (×100), Orange (×1k), Yellow (×10k), Green (×100k), Blue (×1M), Violet (×10M), Gold (×0.1), Silver (×0.01). default: 2.
  5. Tolerance Band — enter your preferred option from the dropdown. Choose from: Brown (±1%), Red (±2%), Gold (±5%), Silver (±10%). default: 2.
  6. Once all inputs are set, review your results in the Results panel. Here's what each output means:
  7. Resistance — your calculated result. This is the primary result of this calculator.
  8. Tolerance — shown as a numeric value.
  9. Min Resistance — shown as a numeric value.
  10. Max Resistance — shown as a numeric value.
  11. Check the Color Code Reference for a detailed row-by-row breakdown. This is useful for spotting trends or finding values at specific points.
  12. Explore the related calculators below if you need deeper analysis or want to approach this topic from a different angle.
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