Resistor Color Code Calculator Resistor Color Code Calculator Determine the resistance value and tolerance of a 4‑band resistor. * Select colors for each band. Step 1: Select Color Bands Band 1 (1st Digit): Black (0) Brown (1) Red (2) Orange (3) Yellow (4) Green (5) Blue (6) Violet (7) Gray (8) White (9) Band 2 (2nd Digit): Black (0) Brown (1) Red (2) Orange (3) Yellow (4) Green (5) Blue (6) Violet (7) Gray (8) White (9) Multiplier: Black: ×1 Brown: ×10 Red: ×100 Orange: ×1,000 Yellow: ×10,000 Green: ×100,000 Blue: ×1,000,000 Violet: ×10,000,000 Gray: ×100,000,000 White: ×1,000,000,000 Gold: ×0.1 Silver: ×0.01 Tolerance: Brown: ±1% Red: ±2% Green: ±0.5% Blue: ±0.25% Violet: ±0.1% Gray: ±0.05% Gold: ±5% Silver: ±10% None: ±20% Calculate Resistance Equivalent Resistance Resistance Value: Tolerance: Recalculate