diff --git a/lib/std/Io.zig b/lib/std/Io.zig
index 02fda4743fc63d9fb836cd725ac7799c84b6963b..937b0aeaefa67e2d9ea78e82ab0313184035f9af 100644
--- a/lib/std/Io.zig
+++ b/lib/std/Io.zig
@@ -903,6 +903,10 @@ pub const Timestamp = struct {
         return .{ .nanoseconds = x };
     }
 
+    pub fn toMilliseconds(t: Timestamp) i64 {
+        return @intCast(@divTrunc(t.nanoseconds, std.time.ns_per_ms));
+    }
+
     pub fn toSeconds(t: Timestamp) i64 {
         return @intCast(@divTrunc(t.nanoseconds, std.time.ns_per_s));
     }