RFResistor Calculator: Calculate Resistance Easily
electronic component
resistor
resistance
color code
calculator
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This page covers a resistor calculator used to calculate resistance.
This resistor calculator takes numeric values of four bands as inputs from the user and produces a resistance value as output.
The rule for the resistance calculator is also mentioned.
EXAMPLE:
- INPUTS: Band1= 6, Band2= 5, Band3 = 2 (i.e. 2 zeros of x100 in third band)
- OUTPUT: 6500 Ohm or 6.5K Ohms
Check for tolerance as per Band4 and Table 1 below. For Gold, Tolerance is +/-5%.
Resistor Formula Used for Resistor Calculator
The following equation or formula is used for this resistor calculator.
Resistor Color Code Table
This table is useful for the above-mentioned resistance calculator.
| Color | Band1 | Band2 | Band3 (No. of Zeros) | Multiplier Band | Band4 Tolerance |
|---|---|---|---|---|---|
| Black | - | 0 | x1 (0) | - | - |
| Brown | 1 | 1 | x10 (1) | - | +/-1% |
| Red | 2 | 2 | x100 (2) | - | +/-2% |
| Orange | 3 | 3 | x1000 (3) | - | +/-3% |
| Yellow | 4 | 4 | x10K (4) | - | +/-4% |
| Green | 5 | 5 | x100K (5) | - | +/-0.5% |
| Blue | 6 | 6 | x1M (6) | - | +/-0.25% |
| Violet | 7 | 7 | x10M (7) | - | +/-0.10% |
| Grey | 8 | 8 | x100M (8) | - | +/-0.05% |
| White | 9 | 9 | x1G (9) | - | - |
| Gold | - | - | - | - | +/-5% |
| Silver | - | - | - | - | +/-10% |
