Resistor Color Code Calculator
Open Resistor Color Code Calculator on Happytails.ai. This view has the same page content and links, with explicit tool capabilities. Read the processing notes before using a tool.
Tool capabilities
{
"id": "resistor-color-code",
"category": "maker-tools",
"built": true,
"requirements": "4/5/6-band modes and tolerance; color labels accessible without relying on color.",
"implementation": {
"fields": [
{
"key": "a",
"label": "First band",
"value": "brown",
"type": "select",
"values": [
"brown",
"red",
"orange",
"yellow",
"green",
"blue",
"violet",
"gray",
"white"
]
},
{
"key": "b",
"label": "Second band",
"value": "black",
"type": "select",
"values": [
"black",
"brown",
"red",
"orange",
"yellow",
"green",
"blue",
"violet",
"gray",
"white"
]
},
{
"key": "multiplier",
"label": "Multiplier",
"value": "black",
"type": "select",
"values": [
"black",
"brown",
"red",
"orange",
"yellow",
"green",
"blue"
]
},
{
"key": "tolerance",
"label": "Tolerance",
"value": "±5% (gold)",
"type": "select",
"values": [
"±5% (gold)",
"±10% (silver)",
"±1% (brown)",
"±2% (red)"
]
}
],
"input": false,
"experience": {
"automatic": true,
"single": false,
"inputMaxLength": 1000000,
"inputMode": "text",
"label": "Your text",
"placeholder": "Hello world!",
"help": "Change the input or settings to update your result. Results update as you type. Up to 1,000,000 characters.",
"helpParts": [
"Change the input or settings to update your result.",
"Results update as you type.",
"Up to 1,000,000 characters."
],
"action": null
},
"mode": "automatic",
"interactive": false
},
"execution": "POST /api/v1/tools/resistor-color-code/run",
"api": {
"id": "resistor-color-code",
"name": "Resistor color code",
"category": "maker-tools",
"description": "4/5/6-band modes and tolerance.",
"notes": "",
"human_path": "/en/maker-tools/resistor-color-code/",
"method": "POST",
"endpoint": "/api/v1/tools/resistor-color-code/run",
"schema_url": "/api/v1/tools/resistor-color-code",
"input_schema": {
"type": "object",
"additionalProperties": false,
"properties": {
"input": {
"type": "string",
"maxLength": 1000000,
"default": "",
"description": "Plain text input. File tools use files instead unless otherwise documented."
},
"options": {
"type": "object",
"additionalProperties": false,
"properties": {
"a": {
"type": "string",
"description": "First band",
"default": "brown",
"enum": [
"brown",
"red",
"orange",
"yellow",
"green",
"blue",
"violet",
"gray",
"white"
]
},
"b": {
"type": "string",
"description": "Second band",
"default": "black",
"enum": [
"black",
"brown",
"red",
"orange",
"yellow",
"green",
"blue",
"violet",
"gray",
"white"
]
},
"multiplier": {
"type": "string",
"description": "Multiplier",
"default": "black",
"enum": [
"black",
"brown",
"red",
"orange",
"yellow",
"green",
"blue"
]
},
"tolerance": {
"type": "string",
"description": "Tolerance",
"default": "±5% (gold)",
"enum": [
"±5% (gold)",
"±10% (silver)",
"±1% (brown)",
"±2% (red)"
]
}
}
}
}
},
"output_schema": {
"type": "object",
"required": [
"tool",
"result"
],
"properties": {
"tool": {
"type": "string"
},
"result": {
"type": "object",
"required": [
"text",
"files"
],
"properties": {
"text": {
"type": [
"string",
"null"
]
},
"data": {
"description": "Parsed JSON when the textual result is JSON."
},
"name": {
"type": "string"
},
"mime": {
"type": "string"
},
"files": {
"type": "array",
"items": {
"type": "object",
"required": [
"name",
"mime",
"bytes",
"base64"
],
"properties": {
"name": {
"type": "string"
},
"mime": {
"type": "string"
},
"bytes": {
"type": "integer"
},
"base64": {
"type": "string",
"contentEncoding": "base64"
}
}
}
}
}
}
}
},
"processing": "Server; same transformation code as browser tools",
"limits": {
"request_bytes": 8388608,
"input_characters": 1000000,
"files_bytes": 5242880,
"max_files": 0,
"timeout_seconds": 12
}
},
"agent_processing": "Server; same transformation code as browser tools",
"browser_agent": {
"supported": true,
"name": "run_current_tool",
"discovery": "WebMCP on the human page in a supporting browser",
"verification": "See audit/API-AUDIT.md; availability is not verification"
}
}Page guide
Find a resistor's value from its colored bands.
How to use Resistor color code
- Enter the values you want to calculate and choose the relevant units or settings.
- The result updates as you type. Adjust the available settings if needed.
- Review the result, then use Copy result or a download link when available.
Useful next steps
Working with resistor color code
Maker utilities prepare models and dimensions for another application or machine. File conversion is only part of the workflow: scale, orientation and geometry can affect whether the result is usable.
Common questions
Can a model look correct and still fail to print?
Yes. Open surfaces, thin walls, overlapping geometry and unsupported features can cause problems that are not obvious from one view.
Does converting a mesh add detail?
No. A conversion does not recover geometry that was absent from the original. Check whether materials, textures and scene information are supported by the destination format.
Continue your workflow: Ohms law, DPI calculator.