diff --git a/conversion/conversion.go b/conversion/conversion.go
new file mode 100644
index 0000000..6d2587c
--- /dev/null
+++ b/conversion/conversion.go
@@ -0,0 +1,14 @@
+package conversion
+
+import "unsafe"
+
+func Bytes(s string) []byte {
+	return unsafe.Slice(unsafe.StringData(s), len(s))
+}
+
+func String(b []byte) string {
+	if len(b) == 0 {
+		return ""
+	}
+	return unsafe.String(unsafe.SliceData(b), len(b))
+}
diff --git a/conversion/conversion_test.go b/conversion/conversion_test.go
new file mode 100644
index 0000000..c7a9c6f
--- /dev/null
+++ b/conversion/conversion_test.go
@@ -0,0 +1,40 @@
+package conversion
+
+import (
+	"bytes"
+	"testing"
+)
+
+func TestBytes(t *testing.T) {
+	testCases := []struct {
+		input    string
+		expected []byte
+	}{
+		{"test", []byte("test")},
+		{"", []byte("")},
+	}
+
+	for _, tc := range testCases {
+		result := Bytes(tc.input)
+		if !bytes.Equal(result, tc.expected) {
+			t.Errorf("Expected %v, but got %v", tc.expected, result)
+		}
+	}
+}
+
+func TestString(t *testing.T) {
+	testCases := []struct {
+		input    []byte
+		expected string
+	}{
+		{[]byte("test"), "test"},
+		{[]byte(""), ""},
+	}
+
+	for _, tc := range testCases {
+		result := String(tc.input)
+		if result != tc.expected {
+			t.Errorf("Expected %s, but got %s", tc.expected, result)
+		}
+	}
+}