Don Wen This workflow corresponds to n8n.io template #13502 — we link there as the canonical source.
The workflow JSON
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{
"meta": {
"templateCredsSetupCompleted": false
},
"name": "Unit-aware calculations with CalcsLive",
"tags": [],
"nodes": [
{
"name": "Sticky Note - Intro",
"type": "n8n-nodes-base.stickyNote",
"position": [
32,
-576
],
"parameters": {
"width": 672,
"height": 512,
"content": "## \ud83d\ude80 CalcsLive Demo Workflow\n\nThis workflow demonstrates **unit-aware calculations** with automatic unit conversion.\n\n### What you'll learn:\n1. Basic calculations can be reused.\n2. Input units flexibility: no extra conversion needed\n3. Choose output units per downstream needs \n4. Chained calculations (calculations are composable)\n\n### Setup:\n1. Install `@calcslive/n8n-nodes-calcslive` from Community Nodes\n2. Get API key from [calcslive.com](https://www.calcslive.com)\n3. Configure credentials, then click Execute!\n\n### Next:\nCreate/copy your own unit aware calculations in CalcsLive and use to power your n8n workflow.\n\n### Help:\nSupported units: https://calcslive.com/help/units-reference"
},
"typeVersion": 1
},
{
"name": "Sticky Note - Speed",
"type": "n8n-nodes-base.stickyNote",
"position": [
832,
-64
],
"parameters": {
"color": 2,
"width": 352,
"height": 208,
"content": "### \ud83d\udcca Speed Calculation\n\nArticleID: 3M6P9TF5P-3XA\nCalc link: https://calcslive.com/editor/3M6P9TF5P-3XA\n\nInputs & outputs variable symbols are populated in dropdown list for cherry-picking.\n\nOutput: Speed in valid unit."
},
"typeVersion": 1
},
{
"name": "Sticky Note - Volume",
"type": "n8n-nodes-base.stickyNote",
"position": [
608,
336
],
"parameters": {
"color": 2,
"width": 208,
"height": 176,
"content": "### \ud83d\udce6 Cylinder Volume\n\nArticleID: 3M6P9TF5P-3XA\nCalc link: https://calcslive.com/editor/3M6P9TF5P-3XA\n\nOutput: Volume in valid unit."
},
"typeVersion": 1
},
{
"name": "Sticky Note - Merge",
"type": "n8n-nodes-base.stickyNote",
"position": [
840,
416
],
"parameters": {
"color": 4,
"width": 200,
"height": 190,
"content": "### \ud83d\udd00 Merge Node\n\nCombines data from:\n- Cylinder Volume (V)\n- Density Input (\u03c1)\n\nBoth are needed for Mass Calc."
},
"typeVersion": 1
},
{
"name": "Sticky Note - Mass",
"type": "n8n-nodes-base.stickyNote",
"position": [
1056,
416
],
"parameters": {
"color": 2,
"width": 304,
"height": 240,
"content": "### \u26d3\ufe0f Chained Calculation\n\nArticleID: 3M6PBGU7S-3CA\nCalc link: https://calcslive.com/editor/3M6PBGU7S-3CA\n\nThis node takes the **merged output** from Volume Calc + Density to calculate mass.\n\nThis is the power of composable calculations!"
},
"typeVersion": 1
},
{
"name": "When clicking 'Execute workflow'",
"type": "n8n-nodes-base.manualTrigger",
"position": [
80,
-48
],
"parameters": {},
"typeVersion": 1
},
{
"name": "Set Density Input",
"type": "n8n-nodes-base.set",
"position": [
432,
368
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"name": "Density",
"type": "number",
"value": 1500
},
{
"name": "DensityUnit",
"type": "string",
"value": "kg/m\u00b3"
}
]
}
},
"typeVersion": 3.4
},
{
"name": "Speed Calc (d,t) \u2192 v",
"type": "@calcslive/n8n-nodes-calcslive.calcsLive",
"position": [
640,
-48
],
"parameters": {
"inputPQs": {
"pq": [
{
"unit": "={{ $json.unit }}",
"value": "={{ $json.distance }}",
"symbol": "d"
},
{
"unit": "={{ $json.timeUnit }}",
"value": "={{ $json.time }}",
"symbol": "t"
}
]
},
"articleId": "3M6P9TF5P-3XA",
"outputPQs": {
"pq": [
{
"unit": "km/h",
"symbol": "v"
}
]
}
},
"credentials": {
"calcsLiveApi": {
"name": "<your credential>"
}
},
"typeVersion": 1
},
{
"name": "Cylinder Volume (D,h) \u2192 V",
"type": "@calcslive/n8n-nodes-calcslive.calcsLive",
"position": [
640,
160
],
"parameters": {
"inputPQs": {
"pq": [
{
"unit": "={{ $json.DiaUnit }}",
"value": "={{ $json.Diameter }}",
"symbol": "D"
},
{
"unit": "={{ $json.HeightUnit }}",
"value": "={{ $json.Height }}",
"symbol": "h"
}
]
},
"articleId": "3M6P9TF5P-3XA",
"outputPQs": {
"pq": [
{
"unit": "L",
"symbol": "V"
}
]
}
},
"credentials": {
"calcsLiveApi": {
"name": "<your credential>"
}
},
"typeVersion": 1
},
{
"name": "Merge Volume + Density",
"type": "n8n-nodes-base.merge",
"position": [
856,
264
],
"parameters": {
"mode": "combine",
"options": {},
"combineBy": "combineAll"
},
"typeVersion": 3
},
{
"name": "Mass Calc (V,\u03c1) \u2192 m",
"type": "@calcslive/n8n-nodes-calcslive.calcsLive",
"position": [
1072,
264
],
"parameters": {
"inputPQs": {
"pq": [
{
"unit": "={{ $json.data.calculation.outputs.V.unit }}",
"value": "={{ $json.data.calculation.outputs.V.value }}",
"symbol": "V"
},
{
"unit": "={{ $json.DensityUnit }}",
"value": "={{ $json.Density }}",
"symbol": "rho"
}
]
},
"articleId": "3M6PBGU7S-3CA",
"outputPQs": {
"pq": [
{
"unit": "g",
"symbol": "m"
}
]
}
},
"credentials": {
"calcsLiveApi": {
"name": "<your credential>"
}
},
"typeVersion": 1
},
{
"name": "Sticky Note - Video",
"type": "n8n-nodes-base.stickyNote",
"position": [
720,
-576
],
"parameters": {
"color": 2,
"width": 464,
"height": 288,
"content": "@[youtube](xC4iFwNkIQs)"
},
"typeVersion": 1
},
{
"name": "Set Inputs for Speed",
"type": "n8n-nodes-base.set",
"position": [
432,
-48
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"name": "distance",
"type": "number",
"value": 360
},
{
"name": "unit",
"type": "string",
"value": "km"
},
{
"name": "time",
"type": "number",
"value": 2
},
{
"name": "timeUnit",
"type": "string",
"value": "h"
}
]
}
},
"typeVersion": 3.4
},
{
"name": "Set Inputs for Cylinder",
"type": "n8n-nodes-base.set",
"position": [
432,
160
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"name": "Diameter",
"type": "number",
"value": 2
},
{
"name": "DiaUnit",
"type": "string",
"value": "cm"
},
{
"name": "Height",
"type": "number",
"value": 10
},
{
"name": "HeightUnit",
"type": "string",
"value": "cm"
}
]
}
},
"typeVersion": 3.4
}
],
"active": false,
"settings": {
"executionOrder": "v1"
},
"connections": {
"Set Density Input": {
"main": [
[
{
"node": "Merge Volume + Density",
"type": "main",
"index": 1
}
]
]
},
"Set Inputs for Speed": {
"main": [
[
{
"node": "Speed Calc (d,t) \u2192 v",
"type": "main",
"index": 0
}
]
]
},
"Merge Volume + Density": {
"main": [
[
{
"node": "Mass Calc (V,\u03c1) \u2192 m",
"type": "main",
"index": 0
}
]
]
},
"Set Inputs for Cylinder": {
"main": [
[
{
"node": "Cylinder Volume (D,h) \u2192 V",
"type": "main",
"index": 0
}
]
]
},
"Cylinder Volume (D,h) \u2192 V": {
"main": [
[
{
"node": "Merge Volume + Density",
"type": "main",
"index": 0
}
]
]
},
"When clicking 'Execute workflow'": {
"main": [
[
{
"node": "Set Inputs for Speed",
"type": "main",
"index": 0
},
{
"node": "Set Inputs for Cylinder",
"type": "main",
"index": 0
},
{
"node": "Set Density Input",
"type": "main",
"index": 0
}
]
]
}
}
}
Credentials you'll need
Each integration node will prompt for credentials when you import. We strip credential IDs before publishing — you'll add your own.
calcsLiveApi
Pro
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About this workflow
This template demonstrates how to perform unit-aware calculations with automatic unit conversion using the CalcsLive community node. It shows three calculation patterns: Speed calculation: Convert distance and time into velocity (km → km/h) Cylinder volume: Calculate volume from…
Source: https://n8n.io/workflows/13502/ — original creator credit. Request a take-down →
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