def convert_readable(size_to_convert):
    """
    This function will convert size to human readable string
    :param size_to_convert: size in bytes
    :return: human-readable string with size
    """
    i = 0
    size_to_convert = int(size_to_convert)
    units = ['B', 'kB', 'MB', 'GB', 'TB', 'PB']
    for i in range(6):
        size_to_convert /= 1024
        if size_to_convert < 1:
            break
    size_to_convert *= 1024
    if i == 0:
        return f"{size_to_convert}B"
    return f"{round(size_to_convert, 2)}{units[i]}"