# Lawn seed calculator

- Human page: https://happytails.ai/en/calculators/lawn-seed-calculator/
- Markdown: https://happytails.ai/en/calculators/lawn-seed-calculator.md
- Structured JSON: https://happytails.ai/agents/en/calculators/lawn-seed-calculator/index.json
- Visibility: public

## Tool capabilities

| Property | Value |
| --- | --- |
| Tool ID | `lawn-seed-calculator` |
| Category | calculators |
| Implementation | Registered implementation. Registration alone is not a production-quality guarantee. |
| Browser execution | Automatic updates after valid input or file selection. |
| Browser processing | Browser; see tool notes for network behavior. |
| HTTP API | Not callable through HTTP. |
| Browser-agent interface | run_current_tool |

### Implementation notes

Enter the rates from your actual seed product. New and overseeded areas must not overlap. Whole bags round up; zero areas require no seed. Runs on your device. Changing units keeps the entered numbers.

### Inputs and settings

No free-text input is required. Use the file inputs and/or settings below.

| Setting | Meaning | Control type | Default | Constraints |
| --- | --- | --- | --- | --- |
| `newArea` | New lawn area | number | 100 | min=0 max=1000000000 step=any |
| `overseedArea` | Separate overseeding area | number | 50 | min=0 max=1000000000 step=any |
| `areaUnit` | Area unit | select | "m²" | Allowed: m², ft², yd², acre, hectare |
| `newRate` | Product seed rate for new lawn | number | 30 | min=0 max=1000000000 step=any |
| `overseedRate` | Product seed rate for overseeding | number | 15 | min=0 max=1000000000 step=any |
| `rateMassUnit` | Seed-rate mass unit | select | "g" | Allowed: g, kg, oz, lb |
| `rateArea` | Reference area covered by each entered rate | number | 1 | min=0 max=1000000000 step=any |
| `rateAreaUnit` | Seed-rate reference area unit | select | "m²" | Allowed: m², ft², yd², acre, hectare |
| `extra` | Extra seed allowance (%) | number | 10 | min=0 max=200 step=any |
| `bag` | Seed per bag | number | 5 | min=0 max=1000000000 step=any |
| `bagUnit` | Bag mass unit | select | "kg" | Allowed: g, kg, oz, lb |

### Browser-agent workflow

1. Open the human page in a browser that supports WebMCP.
2. Discover the interface exposed by that page; use its actual schema.
3. Select files on the page first when the tool requires files.
4. Call `run_current_tool` with valid input and settings.
5. Inspect the returned result or error and the displayed output. Retrieve files from the displayed download links.

Calls do not automatically copy or download results. Browser permissions still apply. Interface availability alone is not proof of successful execution.

### Planning specification

Up to 1 million bags. Rates are editable examples, not recommendations for a seed type, season or site. Zero total area needs no seed.

This describes intended requirements. Use the implementation notes, interface schema and observed output to determine current support.

### Complete machine-readable capability record

```json
{
  "id": "lawn-seed-calculator",
  "category": "calculators",
  "built": true,
  "requirements": "Up to 1 million bags. Rates are editable examples, not recommendations for a seed type, season or site. Zero total area needs no seed.",
  "implementation": {
    "fields": [
      {
        "key": "newArea",
        "label": "New lawn area",
        "value": 100,
        "type": "number",
        "min": 0,
        "max": 1000000000,
        "step": "any"
      },
      {
        "key": "overseedArea",
        "label": "Separate overseeding area",
        "value": 50,
        "type": "number",
        "min": 0,
        "max": 1000000000,
        "step": "any"
      },
      {
        "key": "areaUnit",
        "label": "Area unit",
        "value": "m²",
        "type": "select",
        "values": [
          "m²",
          "ft²",
          "yd²",
          "acre",
          "hectare"
        ]
      },
      {
        "key": "newRate",
        "label": "Product seed rate for new lawn",
        "value": 30,
        "type": "number",
        "min": 0,
        "max": 1000000000,
        "step": "any"
      },
      {
        "key": "overseedRate",
        "label": "Product seed rate for overseeding",
        "value": 15,
        "type": "number",
        "min": 0,
        "max": 1000000000,
        "step": "any"
      },
      {
        "key": "rateMassUnit",
        "label": "Seed-rate mass unit",
        "value": "g",
        "type": "select",
        "values": [
          "g",
          "kg",
          "oz",
          "lb"
        ]
      },
      {
        "key": "rateArea",
        "label": "Reference area covered by each entered rate",
        "value": 1,
        "type": "number",
        "min": 0,
        "max": 1000000000,
        "step": "any"
      },
      {
        "key": "rateAreaUnit",
        "label": "Seed-rate reference area unit",
        "value": "m²",
        "type": "select",
        "values": [
          "m²",
          "ft²",
          "yd²",
          "acre",
          "hectare"
        ]
      },
      {
        "key": "extra",
        "label": "Extra seed allowance (%)",
        "value": 10,
        "type": "number",
        "min": 0,
        "max": 200,
        "step": "any"
      },
      {
        "key": "bag",
        "label": "Seed per bag",
        "value": 5,
        "type": "number",
        "min": 0,
        "max": 1000000000,
        "step": "any"
      },
      {
        "key": "bagUnit",
        "label": "Bag mass unit",
        "value": "kg",
        "type": "select",
        "values": [
          "g",
          "kg",
          "oz",
          "lb"
        ]
      }
    ],
    "input": false,
    "background": false,
    "live": true,
    "presentation": "metrics",
    "note": "Enter the rates from your actual seed product. New and overseeded areas must not overlap. Whole bags round up; zero areas require no seed. 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"
  }
}
```

## Page guide

Estimate seed for new lawn and separate overseeding areas using the rates on your actual product.

How can we improve this tool?

Report a problem or share an idea.

Please leave out private information. Your message and the tool name go to our team via PostHog.

### How to use Lawn seed calculator

1. Enter your measured quantities, units and assumptions.
2. Review the calculated result and the stated limits.
3. Download the report or plan for your project.

## Useful next steps

- [Seed quantity calculator](https://happytails.ai/en/calculators/seed-quantity-calculator/) ([Markdown](https://happytails.ai/en/calculators/seed-quantity-calculator.md))

- [Garden irrigation calculator](https://happytails.ai/en/calculators/garden-irrigation-calculator/) ([Markdown](https://happytails.ai/en/calculators/garden-irrigation-calculator.md))

## Enter each product rate

Set the new-lawn and overseeding rates with their mass and reference area. A rate of 4 lb per 1,000 square feet stays distinct from grams per square metre.

### Buy whole bags

Add an optional allowance, choose the bag weight and see the rounded bag count and leftover seed. Keep new and overseeded areas separate so neither is counted twice.

### Save the measurements and assumptions

Download 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.