diff --git a/QOIDecoder/DecoderProgram.cs b/QOIDecoder/DecoderProgram.cs
index 3940ab5..c617c56 100644
--- a/QOIDecoder/DecoderProgram.cs
+++ b/QOIDecoder/DecoderProgram.cs
@@ -11,9 +11,13 @@ namespace QOIDecoder
     class DecoderProgram
     {
         static bool verbose = false;
+        static DateTime t1;
 
         static void Main(string[] args)
         {
+            AppDomain.CurrentDomain.ProcessExit += ProcessExitMethod; 
+            t1 = DateTime.UtcNow;
+
             if (args.Length == 0)
             {
                 PrintUsage();
@@ -211,6 +215,13 @@ static void Main(string[] args)
 
         static void Verbose(string str) { if (verbose) Console.WriteLine(str); }
 
+        static void ProcessExitMethod(object sender, EventArgs args)
+        {
+            DateTime t2 = DateTime.UtcNow;
+            TimeSpan time = t2 - t1;
+            Console.WriteLine($"Finished in {time.TotalMilliseconds} ms.");
+        }
+
         static void PrintUsage()
         {
             Console.WriteLine("Usage: qoidecode [options] <source> <destination>\nOptions:\n-h  Print usage and exit.\n-v   Verbose logging.");
diff --git a/QOIEncoder/EncoderProgram.cs b/QOIEncoder/EncoderProgram.cs
index f04a3b1..ccccd1d 100644
--- a/QOIEncoder/EncoderProgram.cs
+++ b/QOIEncoder/EncoderProgram.cs
@@ -12,9 +12,13 @@ namespace QOIEncoder
     class EncoderProgram
     {
         static bool verbose = false;
+        static DateTime t1;
 
         static void Main(string[] args)
         {
+            AppDomain.CurrentDomain.ProcessExit += ProcessExitMethod;
+            t1 = DateTime.UtcNow;
+
             if (args.Length == 0)
             {
                 PrintUsage();
@@ -197,6 +201,13 @@ static void Main(string[] args)
 
         static void Verbose(string str) { if (verbose) Console.WriteLine(str); }
 
+        static void ProcessExitMethod(object sender, EventArgs args)
+        {
+            DateTime t2 = DateTime.UtcNow;
+            TimeSpan time = t2 - t1;
+            Console.WriteLine($"Finished in {time.TotalMilliseconds} ms.");
+        }
+
         static void PrintUsage()
         {
             Console.WriteLine("Usage: qoiencode [options] <source> <destination>\nOptions:\n-h   Print usage and exit.\n-v   Verbose logging.");