Readable File Size

ReadableFileSize.cs

public static String readableFileSized(long size)
        {
            long bytes = size;
            string[] suf = { "B", "KB", "MB", "GB", "TB", "PB" };
            int place = Convert.ToInt32(Math.Floor(Math.Log(bytes, 1024)));
            double num = Math.Round(bytes / Math.Pow(1024, place), 1);
            string readable = num.ToString() + suf[place];
            return readable;
        }