E-Wave
Comprehensive Engineering Analytics & Conversions
Ohm's & Power
Resistor Rings
Thermal Heat
Resistivity
Unit Converter
Select Parameter to Find
Voltage (V = I × R)
Current (I = V / R)
Resistance (R = V / I)
Power (P = V × I)
Calculate Parameters
Resistor Configuration
4-Band Resistor
5-Band Resistor
1st Band (Digit)
Black (0)
Brown (1)
Red (2)
Orange (3)
Yellow (4)
Green (5)
Blue (6)
Violet (7)
Grey (8)
White (9)
2nd Band (Digit)
Black (0)
Brown (1)
Red (2)
Orange (3)
Yellow (4)
Green (5)
Blue (6)
Violet (7)
Grey (8)
White (9)
3rd Band (Digit)
Black (0)
Brown (1)
Red (2)
Orange (3)
Yellow (4)
Green (5)
Blue (6)
Violet (7)
Grey (8)
White (9)
Multiplier Band
Black (×1 Ω)
Brown (×10 Ω)
Red (×100 Ω)
Orange (×1 kΩ)
Yellow (×10 kΩ)
Green (×100 kΩ)
Blue (×1 MΩ)
Gold (×0.1 Ω)
Silver (×0.01 Ω)
Tolerance Band
Brown (±1%)
Red (±2%)
Gold (±5%)
Silver (±10%)
Decode Color Codes
Power (Watts) or Dissipation Rate
Time Value
Time Unit
Seconds
Minutes
Hours
Calculate Dissipated Heat
Measured Resistance (Ω)
Cross-Sectional Area (m²)
Conductor Length (meters)
Compute Material Resistivity
Value to Convert
Source Unit
Watts (W)
Kilowatts (kW)
Megawatts (MW)
Horsepower (HP)
Target Unit
Watts (W)
Kilowatts (kW)
Megawatts (MW)
Horsepower (HP)
Transform Units