> ## Documentation Index
> Fetch the complete documentation index at: https://docs.wherobots.com/llms.txt
> Use this file to discover all available pages before exploring further.

# ST_LengthSpheroid (Python)

> Calculate the perimeter of a geometry using WGS84 spheroid.

Calculate the perimeter of a geometry using WGS84 spheroid.

SQL reference: [`ST_LengthSpheroid`](/reference/wherobots-db/geometry-data/measurement/ST_LengthSpheroid)

## Signature

```python theme={"system"}
from sedona.spark.sql.st_functions import ST_LengthSpheroid

ST_LengthSpheroid(geometry: ColumnOrName) -> Column
```

## Parameters

<ParamField path="geometry" type="ColumnOrName" required>
  Geometry column to calculate length for.
</ParamField>

## Returns

<ResponseField name="return" type="Column">
  perimeter of geometry as a double column. Unit is meter.
</ResponseField>


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