diff --git a/csharp/src/Apache.Arrow/Arrays/TimestampArray.cs b/csharp/src/Apache.Arrow/Arrays/TimestampArray.cs
index 0269768f490bb..0dc5726d01734 100644
--- a/csharp/src/Apache.Arrow/Arrays/TimestampArray.cs
+++ b/csharp/src/Apache.Arrow/Arrays/TimestampArray.cs
@@ -76,7 +76,7 @@ protected override long ConvertTo(DateTimeOffset value)
                 switch (DataType.Unit)
                 {
                     case TimeUnit.Nanosecond:
-                        return ticks * 100;
+                        return checked(ticks * 100);
                     case TimeUnit.Microsecond:
                         return ticks / 10;
                     case TimeUnit.Millisecond: