{
  "title": "Pond volume calculator",
  "human_url": "https://happytails.ai/en/calculators/pond-volume-calculator/",
  "agent_url": "https://happytails.ai/agents/en/calculators/pond-volume-calculator/",
  "language": "en",
  "markdown_url": "https://happytails.ai/en/calculators/pond-volume-calculator.md",
  "content": "Pond volume calculator\nEstimate pond capacity from separate depth bands, then subtract rocks or equipment once.\nHow can we improve this tool?\nReport a problem or share an idea.\nPlease leave out private information. Your message and the tool name go to our team via PostHog.\nHow to use Pond volume calculator\nEnter your measured quantities, units and assumptions.\nReview the calculated result and the stated limits.\nDownload the report or plan for your project.\nUseful next steps\nPond liner calculator\nRainfall collection calculator\nDescribe the pond from top to bottom\nEnter one layer per line as length, width and layer thickness. Each layer occupies a separate depth band. Deeper layers cannot be wider or longer than the layer above.\nChoose rectangular or elliptical sections\nFor ellipses, enter full axes. Each band uses constant plan area and vertical sides. Download the depth-by-depth volume breakdown, total capacity and capacity after displacement.\nSave the measurements and assumptions\nDownload CSV and a text or JSON report. The calculation runs on your device. Changing a unit keeps the number you entered, so check both before using the result.",
  "content_format": "text/plain",
  "visibility": "public",
  "links": [
    {
      "name": "Pond liner calculator",
      "url": "https://happytails.ai/en/calculators/pond-liner-calculator/"
    },
    {
      "name": "Rainfall collection calculator",
      "url": "https://happytails.ai/en/calculators/rainfall-collection-calculator/"
    }
  ],
  "tool": {
    "id": "pond-volume-calculator",
    "category": "calculators",
    "built": true,
    "requirements": "Up to 30 positive layers. Sloped walls are approximated by the chosen steps. Layer depth means thickness, not cumulative depth; displacement must leave positive water capacity.",
    "implementation": {
      "fields": [
        {
          "key": "shape",
          "label": "Horizontal section shape",
          "value": "Rectangle",
          "type": "select",
          "values": [
            "Rectangle",
            "Ellipse"
          ]
        },
        {
          "key": "layers",
          "label": "Layers from top to bottom: length, width, thickness",
          "value": "4, 3, 0.3\n3, 2, 0.4\n2, 1, 0.3",
          "type": "textarea",
          "help": "One depth band per line, for example 4, 3, 0.3. Enter full ellipse axes. Deeper sections cannot be larger. Up to 30 layers."
        },
        {
          "key": "unit",
          "label": "Dimension unit",
          "value": "m",
          "type": "select",
          "values": [
            "mm",
            "cm",
            "m",
            "in",
            "ft",
            "yd"
          ]
        },
        {
          "key": "displaced",
          "label": "Volume occupied by rocks or equipment",
          "value": 0,
          "type": "number",
          "min": 0,
          "max": 1000000000,
          "step": "any"
        },
        {
          "key": "displacedUnit",
          "label": "Displaced volume unit",
          "value": "L",
          "type": "select",
          "values": [
            "L",
            "m³",
            "US gal",
            "Imp gal",
            "ft³",
            "yd³"
          ]
        },
        {
          "key": "outputUnit",
          "label": "Output capacity unit",
          "value": "L",
          "type": "select",
          "values": [
            "L",
            "m³",
            "US gal",
            "Imp gal",
            "ft³",
            "yd³"
          ]
        }
      ],
      "input": false,
      "background": false,
      "live": true,
      "presentation": "metrics",
      "note": "Sum the volume of non-overlapping horizontal depth bands, then subtract displacement once. Layer depths are thicknesses, not cumulative depths. Runs on your device. Changing units keeps the entered numbers.",
      "experience": {
        "automatic": true,
        "single": false,
        "inputMaxLength": 1000000,
        "inputMode": "text",
        "label": "Your text",
        "placeholder": "Type or paste your input…",
        "help": "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": "Browser interface",
    "api": null,
    "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"
    }
  },
  "markdown": "# Pond volume calculator\n\n- Human page: https://happytails.ai/en/calculators/pond-volume-calculator/\n- Markdown: https://happytails.ai/en/calculators/pond-volume-calculator.md\n- Structured JSON: https://happytails.ai/agents/en/calculators/pond-volume-calculator/index.json\n- Visibility: public\n\n## Tool capabilities\n\n| Property | Value |\n| --- | --- |\n| Tool ID | `pond-volume-calculator` |\n| Category | calculators |\n| Implementation | Registered implementation. Registration alone is not a production-quality guarantee. |\n| Browser execution | Automatic updates after valid input or file selection. |\n| Browser processing | Browser; see tool notes for network behavior. |\n| HTTP API | Not callable through HTTP. |\n| Browser-agent interface | run_current_tool |\n\n### Implementation notes\n\nSum the volume of non-overlapping horizontal depth bands, then subtract displacement once. Layer depths are thicknesses, not cumulative depths. Runs on your device. Changing units keeps the entered numbers.\n\n### Inputs and settings\n\nNo free-text input is required. Use the file inputs and/or settings below.\n\n| Setting | Meaning | Control type | Default | Constraints |\n| --- | --- | --- | --- | --- |\n| `shape` | Horizontal section shape | select | \"Rectangle\" | Allowed: Rectangle, Ellipse |\n| `layers` | Layers from top to bottom: length, width, thickness | textarea | \"4, 3, 0.3\\n3, 2, 0.4\\n2, 1, 0.3\" |  |\n| `unit` | Dimension unit | select | \"m\" | Allowed: mm, cm, m, in, ft, yd |\n| `displaced` | Volume occupied by rocks or equipment | number | 0 | min=0 max=1000000000 step=any |\n| `displacedUnit` | Displaced volume unit | select | \"L\" | Allowed: L, m³, US gal, Imp gal, ft³, yd³ |\n| `outputUnit` | Output capacity unit | select | \"L\" | Allowed: L, m³, US gal, Imp gal, ft³, yd³ |\n\n### Browser-agent workflow\n\n1. Open the human page in a browser that supports WebMCP.\n2. Discover the interface exposed by that page; use its actual schema.\n3. Select files on the page first when the tool requires files.\n4. Call `run_current_tool` with valid input and settings.\n5. Inspect the returned result or error and the displayed output. Retrieve files from the displayed download links.\n\nCalls do not automatically copy or download results. Browser permissions still apply. Interface availability alone is not proof of successful execution.\n\n### Planning specification\n\nUp to 30 positive layers. Sloped walls are approximated by the chosen steps. Layer depth means thickness, not cumulative depth; displacement must leave positive water capacity.\n\nThis describes intended requirements. Use the implementation notes, interface schema and observed output to determine current support.\n\n### Complete machine-readable capability record\n\n```json\n{\n  \"id\": \"pond-volume-calculator\",\n  \"category\": \"calculators\",\n  \"built\": true,\n  \"requirements\": \"Up to 30 positive layers. Sloped walls are approximated by the chosen steps. Layer depth means thickness, not cumulative depth; displacement must leave positive water capacity.\",\n  \"implementation\": {\n    \"fields\": [\n      {\n        \"key\": \"shape\",\n        \"label\": \"Horizontal section shape\",\n        \"value\": \"Rectangle\",\n        \"type\": \"select\",\n        \"values\": [\n          \"Rectangle\",\n          \"Ellipse\"\n        ]\n      },\n      {\n        \"key\": \"layers\",\n        \"label\": \"Layers from top to bottom: length, width, thickness\",\n        \"value\": \"4, 3, 0.3\\n3, 2, 0.4\\n2, 1, 0.3\",\n        \"type\": \"textarea\",\n        \"help\": \"One depth band per line, for example 4, 3, 0.3. Enter full ellipse axes. Deeper sections cannot be larger. Up to 30 layers.\"\n      },\n      {\n        \"key\": \"unit\",\n        \"label\": \"Dimension unit\",\n        \"value\": \"m\",\n        \"type\": \"select\",\n        \"values\": [\n          \"mm\",\n          \"cm\",\n          \"m\",\n          \"in\",\n          \"ft\",\n          \"yd\"\n        ]\n      },\n      {\n        \"key\": \"displaced\",\n        \"label\": \"Volume occupied by rocks or equipment\",\n        \"value\": 0,\n        \"type\": \"number\",\n        \"min\": 0,\n        \"max\": 1000000000,\n        \"step\": \"any\"\n      },\n      {\n        \"key\": \"displacedUnit\",\n        \"label\": \"Displaced volume unit\",\n        \"value\": \"L\",\n        \"type\": \"select\",\n        \"values\": [\n          \"L\",\n          \"m³\",\n          \"US gal\",\n          \"Imp gal\",\n          \"ft³\",\n          \"yd³\"\n        ]\n      },\n      {\n        \"key\": \"outputUnit\",\n        \"label\": \"Output capacity unit\",\n        \"value\": \"L\",\n        \"type\": \"select\",\n        \"values\": [\n          \"L\",\n          \"m³\",\n          \"US gal\",\n          \"Imp gal\",\n          \"ft³\",\n          \"yd³\"\n        ]\n      }\n    ],\n    \"input\": false,\n    \"background\": false,\n    \"live\": true,\n    \"presentation\": \"metrics\",\n    \"note\": \"Sum the volume of non-overlapping horizontal depth bands, then subtract displacement once. Layer depths are thicknesses, not cumulative depths. Runs on your device. Changing units keeps the entered numbers.\",\n    \"experience\": {\n      \"automatic\": true,\n      \"single\": false,\n      \"inputMaxLength\": 1000000,\n      \"inputMode\": \"text\",\n      \"label\": \"Your text\",\n      \"placeholder\": \"Type or paste your input…\",\n      \"help\": \"Change the input or settings to update your result. Results update as you type. Up to 1,000,000 characters.\",\n      \"action\": null\n    },\n    \"mode\": \"automatic\",\n    \"interactive\": false\n  },\n  \"execution\": \"Browser interface\",\n  \"api\": null,\n  \"browser_agent\": {\n    \"supported\": true,\n    \"name\": \"run_current_tool\",\n    \"discovery\": \"WebMCP on the human page in a supporting browser\",\n    \"verification\": \"See audit/API-AUDIT.md; availability is not verification\"\n  }\n}\n```\n\n## Page guide\n\nEstimate pond capacity from separate depth bands, then subtract rocks or equipment once.\n\nHow can we improve this tool?\n\nReport a problem or share an idea.\n\nPlease leave out private information. Your message and the tool name go to our team via PostHog.\n\n### How to use Pond volume calculator\n\n1. Enter your measured quantities, units and assumptions.\n2. Review the calculated result and the stated limits.\n3. Download the report or plan for your project.\n\n## Useful next steps\n\n- [Pond liner calculator](https://happytails.ai/en/calculators/pond-liner-calculator/) ([Markdown](https://happytails.ai/en/calculators/pond-liner-calculator.md))\n\n- [Rainfall collection calculator](https://happytails.ai/en/calculators/rainfall-collection-calculator/) ([Markdown](https://happytails.ai/en/calculators/rainfall-collection-calculator.md))\n\n## Describe the pond from top to bottom\n\nEnter one layer per line as length, width and layer thickness. Each layer occupies a separate depth band. Deeper layers cannot be wider or longer than the layer above.\n\n### Choose rectangular or elliptical sections\n\nFor ellipses, enter full axes. Each band uses constant plan area and vertical sides. Download the depth-by-depth volume breakdown, total capacity and capacity after displacement.\n\n### Save the measurements and assumptions\n\nDownload CSV and a text or JSON report. The calculation runs on your device. Changing a unit keeps the number you entered, so check both before using the result.\n"
}