diff --git a/en/format.go b/en/format.go
new file mode 100644
index 0000000..e97a1f7
--- /dev/null
+++ b/en/format.go
@@ -0,0 +1,58 @@
+package orden
+
+import (
+	"strconv"
+)
+
+// FormatInt64 return the number in its numeric- ordinal format.
+//
+// For example —
+//
+//	0 → "0th"
+//
+//	1 → "1st"
+//
+//	2 → "2nd"
+//
+//	3 → "3rd"
+//
+//	4 → "4th"
+//
+//	5 → "5th"
+//
+//	...
+//
+//	10 → "10th"
+//
+//	11 → "11th"
+//
+//	12 → "12th"
+//
+//	13 → "13th"
+//
+//	14 → "14th"
+//
+//	...
+//
+//	1000 → "1000th"
+//
+//	1001 → "1001st"
+//
+//	1002 → "1002nd"
+//
+//	1003 → "1003rd"
+//
+//	1004 → "1004th"
+//
+//	...
+func FormatInt64(n int64) string {
+
+	var p []byte
+	{
+		p = append(p, strconv.FormatInt(n, 10)...)
+
+		p = append(p, suffixInt64(n)...)
+	}
+
+	return string(p)
+}