diff --git a/math/floor.jule b/math/floor.jule
new file mode 100644
index 0000000..cae99c5
--- /dev/null
+++ b/math/floor.jule
@@ -0,0 +1,7 @@
+fn Floor(n: f64): f64 {
+	let i = int(n)
+	if n < f64(i) {
+		return f64(i - 1)
+	}
+	return f64(i)
+}
\ No newline at end of file
diff --git a/math/floor_test.jule b/math/floor_test.jule
new file mode 100644
index 0000000..3cf5668
--- /dev/null
+++ b/math/floor_test.jule
@@ -0,0 +1,11 @@
+#build test
+
+use "std/testing"
+
+#test
+fn testFloor(t: &testing::T) {
+	t.Assert(Floor(12.2) == 12, "12.2 should floor to 12")
+	t.Assert(Floor(12) == 12, "12 should floor to 12")
+	t.Assert(Floor(-0.35) == -1, "-0.35 should floor to -1")
+	t.Assert(Floor(-12.2) == -13, "-12.2 should floor to -13")
+}
\ No newline at end of file