diff --git a/sh/conv b/sh/conv
new file mode 100644
index 0000000..3f708a7
--- /dev/null
+++ b/sh/conv
@@ -0,0 +1,4 @@
+#!/bin/zsh
+conv() {
+	printf "%08x\n" $(((0x$1-0x4F920000+0x80000000)^3))
+}
diff --git a/sh/unconv b/sh/unconv
new file mode 100644
index 0000000..20f114b
--- /dev/null
+++ b/sh/unconv
@@ -0,0 +1,4 @@
+#!/bin/zsh
+unconv() {
+	printf "%08x\n" $(((0x$1^3)&0x00FFFFFF+0x4F920000))
+}