# Resistor Color Code Calculator — Value Reference, Guides, Conversions, Kits

For the full tool, see: [https://capytoolkit.com/tools/math/resistor-calc/](https://capytoolkit.com/tools/math/resistor-calc/)

## Resistor Values Reference

[100Ω Resistor Color Code](https://capytoolkit.com/tools/math/resistor-calc/reference/#100-ohm): 100Ω resistor color code: Brown-Black-Brown-Gold (4-band ±5%) or Brown-Black-Black-Black-Brown (5-band ±1%). Verify with the calculator above.
[220Ω Resistor Color Code](https://capytoolkit.com/tools/math/resistor-calc/reference/#220-ohm): 220Ω resistor color code: Red-Red-Brown-Gold (4-band ±5%) or Red-Red-Black-Black-Brown (5-band ±1%). Verify with the calculator above.
[470Ω Resistor Color Code](https://capytoolkit.com/tools/math/resistor-calc/reference/#470-ohm): 470Ω resistor color code: Yellow-Violet-Brown-Gold (4-band ±5%) or Yellow-Violet-Black-Black-Brown (5-band ±1%).
[1kΩ Resistor Color Code](https://capytoolkit.com/tools/math/resistor-calc/reference/#1k-ohm): 1kΩ resistor color code: Brown-Black-Red-Gold (4-band ±5%) or Brown-Black-Black-Brown-Brown (5-band ±1%).
[4.7kΩ Resistor Color Code](https://capytoolkit.com/tools/math/resistor-calc/reference/#4-7k-ohm): 4.7kΩ resistor color code: Yellow-Violet-Red-Gold (4-band ±5%) or Yellow-Violet-Black-Brown-Brown (5-band ±1%).
[10kΩ Resistor Color Code](https://capytoolkit.com/tools/math/resistor-calc/reference/#10k-ohm): 10kΩ resistor color code: Brown-Black-Orange-Gold (4-band ±5%) or Brown-Black-Black-Red-Brown (5-band ±1%).
[100kΩ Resistor Color Code](https://capytoolkit.com/tools/math/resistor-calc/reference/#100k-ohm): 100kΩ resistor color code: Brown-Black-Yellow-Gold (4-band ±5%) or Brown-Black-Black-Orange-Brown (5-band ±1%).
[1MΩ Resistor Color Code](https://capytoolkit.com/tools/math/resistor-calc/reference/#1m-ohm): 1MΩ resistor color code: Brown-Black-Green-Gold (4-band ±5%) or Brown-Black-Black-Yellow-Brown (5-band ±1%).
[1Ω Resistor Color Code](https://capytoolkit.com/tools/math/resistor-calc/reference/#1-ohm): 1Ω resistor color code: Brown-Black-Gold-Gold (4-band ±5%) or Brown-Black-Black-Silver-Brown (5-band ±1%). Verify with the calculator above.
[220kΩ Resistor Color Code](https://capytoolkit.com/tools/math/resistor-calc/reference/#220k-ohm): 220kΩ resistor color code: Red-Red-Yellow-Gold (4-band ±5%) or Red-Red-Black-Orange-Brown (5-band ±1%). Verify with the calculator above.
[1.5kΩ Resistor Color Code](https://capytoolkit.com/tools/math/resistor-calc/reference/#1k5-ohm): 1.5kΩ resistor color code: Brown-Green-Red-Gold (4-band ±5%) or Brown-Green-Black-Brown-Brown (5-band ±1%). Verify with the calculator above.
[2.2kΩ Resistor Color Code](https://capytoolkit.com/tools/math/resistor-calc/reference/#2200-ohm): 2.2kΩ resistor color code: Red-Red-Red-Gold (4-band ±5%) or Red-Red-Black-Brown-Brown (5-band ±1%). Verify with the calculator above.
[1kΩ 5-Band Resistor Color Code](https://capytoolkit.com/tools/math/resistor-calc/reference/#1k-ohm-5-band): 5-band 1kΩ resistor color code: Brown-Black-Black-Brown-Brown (±1%). Three digit bands 1-0-0, multiplier ×10, tolerance ±1%. Verify with the calculator above.
[1kΩ 4-Band Resistor Color Code](https://capytoolkit.com/tools/math/resistor-calc/reference/#1k-ohm-4-band): 4-band 1kΩ resistor color code: Brown-Black-Red-Gold (±5%). Two digit bands 1-0, multiplier ×100, tolerance ±5%. Verify with the calculator above.
[220Ω 5-Band Resistor Color Code](https://capytoolkit.com/tools/math/resistor-calc/reference/#220-ohm-5-band): 5-band 220Ω resistor color code: Red-Red-Black-Black-Brown (±1%). Three digit bands 2-2-0, multiplier ×1, tolerance ±1%. Verify with the calculator above.
[220Ω 4-Band Resistor Color Code](https://capytoolkit.com/tools/math/resistor-calc/reference/#220-ohm-4-band): 4-band 220Ω resistor color code: Red-Red-Brown-Gold (±5%). Two digit bands 2-2, multiplier ×10, tolerance ±5%. Verify with the calculator above.
[1Ω 5-Band Resistor Color Code](https://capytoolkit.com/tools/math/resistor-calc/reference/#1-ohm-5-band): 5-band 1Ω resistor color code: Brown-Black-Black-Silver-Brown (±1%). Three digit bands 1-0-0, multiplier ×0.01, tolerance ±1%. Verify with the calculator above.
[33Ω Resistor Color Code](https://capytoolkit.com/tools/math/resistor-calc/reference/#33-ohm): 33Ω resistor color code: Orange-Orange-Black-Gold (4-band ±5%) or Orange-Orange-Black-Gold-Brown (5-band ±1%). USB termination and audio series resistors.
[330Ω Resistor Color Code](https://capytoolkit.com/tools/math/resistor-calc/reference/#330-ohm): 330Ω resistor color code: Orange-Orange-Brown-Gold (4-band ±5%) or Orange-Orange-Black-Black-Brown (5-band ±1%). Common LED limiting resistor for 9–12V circuits.
[22kΩ Resistor Color Code](https://capytoolkit.com/tools/math/resistor-calc/reference/#22k-ohm): 22kΩ resistor color code: Red-Red-Orange-Gold (4-band ±5%) or Red-Red-Black-Red-Brown (5-band ±1%). ADC voltage dividers, audio bias, and MOSFET gate resistors.

## Guides

[Choosing the Right LED Current-Limiting Resistor](https://capytoolkit.com/tools/math/resistor-calc/led-current-limiting-resistor/): Calculate the correct LED current-limiting resistor for 3.3V, 5V, 9V, and 12V circuits. Formula, step-by-step selection, and worked examples.
[Building a Voltage Divider with Resistors](https://capytoolkit.com/tools/math/resistor-calc/voltage-divider-design/): Design a resistor voltage divider for ADC inputs, reference voltages, and level shifting. Includes loading effect analysis and component selection.
[Selecting Pull-Up and Pull-Down Resistors](https://capytoolkit.com/tools/math/resistor-calc/pull-up-resistor-selection/): Choose the right pull-up value for I²C, GPIO inputs, and open-drain buses. Covers standard mode, fast mode, and button debounce applications.
[How to Choose the Right Resistor Wattage](https://capytoolkit.com/tools/math/resistor-calc/resistor-power-rating/): Determine the correct resistor power rating using P = V²/R. Covers the 2× derating rule, duty-cycle applications, and common sizing mistakes.
[Combining Resistors in Series and Parallel](https://capytoolkit.com/tools/math/resistor-calc/series-parallel-resistors/): Calculate total resistance for series and parallel combinations. Includes formulas, worked examples, and how to use combinations to replace unavailable values.

## Resistor Color Code Calculator: Conversions

[Ohms to Kilohms](https://capytoolkit.com/tools/math/resistor-calc/conversions/#ohms-to-kilohms): Convert Ohms to Kilohms for resistors and resistance values.
[Kilohms to Megaohms](https://capytoolkit.com/tools/math/resistor-calc/conversions/#kilohms-to-megaohms): Convert Kilohms to Megaohms for resistors and resistance values.
[Ohms to Megaohms](https://capytoolkit.com/tools/math/resistor-calc/conversions/#ohms-to-megaohms): Convert Ohms to Megaohms for resistors and resistance values.

## Resistor Kits

[BOJACK 1350 Pcs Resistor Kit](https://capytoolkit.com/tools/math/resistor-calc/bojack-1350-resistor-kit/): Use the color code calculator above to identify any resistor from the BOJACK 1350-piece kit. Covers all 50 values from 0Ω to 5.6MΩ with ±1% metal film tolerance.
[Plusivo 600 Pcs Resistor Assortment Kit](https://capytoolkit.com/tools/math/resistor-calc/plusivo-600-resistor-kit/): Use the color code calculator above to identify any resistor from the Plusivo 600-piece assortment. Covers 30 standard values from 10Ω to 1MΩ with ±1% metal film tolerance.
[Aniann 1280 Pcs Resistor Kit](https://capytoolkit.com/tools/math/resistor-calc/aniann-1280-resistor-kit/): Use the color code calculator above to identify any resistor from the Aniann 1280-piece kit. Covers 64 values from 1Ω to 10MΩ with ±1% metal film tolerance.
[Loreso 1200 Pcs Resistor Kit](https://capytoolkit.com/tools/math/resistor-calc/loreso-1200-resistor-kit/): Use the color code calculator above to identify any resistor from the Loreso 1200-piece kit. Covers 38 E24 preferred values with ±1% metal film tolerance.
[MelkTemn 2600 Pcs Resistor Kit](https://capytoolkit.com/tools/math/resistor-calc/melktemn-2600-resistor-kit/): Use the color code calculator above to identify any resistor from the MelkTemn 2600-piece kit. Covers 130 values with ±1% metal film tolerance.