> For the complete documentation index, see [llms.txt](https://carbonlink.gitbook.io/carbonlink-api/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://carbonlink.gitbook.io/carbonlink-api/core/data-objects/estimate.md).

# Estimate

Contains data related to the emission estimation of one or more goods and services.

#### The Estimate object

| **id**  `string`                                                           | Unique identifier for the object                                                                                                 |
| -------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------- |
| **kgCO2e**  `float`                                                        | Total weight of emissions                                                                                                        |
| **price**  `float`                                                         | Total price of offsetting this amount of kgCO2e using carbon assets from the `default_asset` asset, in USD                       |
| **default\_asset**  `string`                                               | Identifier for the [**Asset**](/carbonlink-api/core/data-objects/asset.md) object used to estimate the price of a future offset. |
| **breakdown**  `object`                                                    | Breakdown of GHG emissions by various constituent gases, in kilograms.                                                           |
| **products**  `object`                                                     | Object containing one or more [**Product**](/carbonlink-api/core/data-objects/product.md) objects                                |
| **shipping\_details** `object` *<mark style="color:blue;">optional</mark>* | Optional object containing details about the shipping these **Product**(s).                                                      |
| **customerRef** `string` *<mark style="color:blue;">optional</mark>*       | Customer reference ID                                                                                                            |
| **createdAt** `string`                                                     | Time of Estimate creation                                                                                                        |

```typescript
// Example:
{
  id: "est_12345678",
  kgCO2e: 123.45,
  price: 230.91,
  default_asset: "asset_123456...",
  breakdown: {
    "co2": 0.12,
    "ch4": 0.48,
    "sf6": 0.40
  },
  products: {
    "prod_123...": {
        id: "prod_123...",
        ...
    },
    "prod_456...": {
        id: "prod_456...",
        ...
    }
  },
  shipping_details: {
    distance: {
      unit: "mile",
      value: 12.12
    },
    route: "land",
    weight: {
      unit: "kg",
      value: 100
    },
  },
  customerRef: "jane@company.com",
  createdAt: "2011-10-05T14:48:00.000Z",
}
```