Utilities-GetFriendlyByteString.cs

private static string GetFriendlyByteString(long bytes)
{
    string[] units = { "B", "KB", "MB", "GB", "TB", "PB", "EB" };
    double runningTotal = bytes;
    foreach (var unit in units)
    {
        double dividedTotal = runningTotal / 1024;
        if (dividedTotal < 1)
        {
            return $"{runningTotal:F2} {unit}";
        }

        runningTotal = dividedTotal;
    }

    // Heuristically unreachable.
    return null;
}