def convertToPlato(specificGravity: float) ->float:
    """
    Convert Specific Gravity to Plato.

    http://hbd.org/ensmingr/

    Parameters
    ----------
    specificGravity : float
        Specific gravity.

    Returns
    -------
    float
        Degress plato.
    """
    return -463.37 + 668.72 * specificGravity - 205.35 * pow(specificGravity, 2
        )
