diff --git a/.config/zsh/functions/adoc2md b/.config/zsh/functions/adoc2md
new file mode 100755
index 0000000..dc0b010
--- /dev/null
+++ b/.config/zsh/functions/adoc2md
@@ -0,0 +1,11 @@
+#!/usr/bin/env zsh
+# Convert AsciiDoc to Markdown.
+
+setopt LOCAL_OPTIONS ERR_RETURN NO_UNSET PIPE_FAIL
+
+if [[ -v 1 ]]; then
+    print "usage: print foo | ${0}"
+    return 1
+fi
+
+cat | asciidoc -b docbook --out-file=- - | pandoc --from=docbook --to=gfm