AcTools.Utils.FileUtils.ReadableSize C# (CSharp) Method

        public static string ReadableSize(long size) {
            double temp = size;
            var level = 0;
            while (temp > 2e3) {
                temp /= 1024;
                level++;
            }

            return temp.ToString("F2") + " " + (" KMGT"[level] + "B").TrimStart();
        }