diff --git a/src/convert.rs b/src/convert.rs
new file mode 100644
index 0000000..4c49458
--- /dev/null
+++ b/src/convert.rs
@@ -0,0 +1,9 @@
+use super::*;
+
+pub trait From<T>: Sized {
+    fn from(_: T) -> Self;
+}
+
+pub trait Into<T>: Sized {
+    fn from(self) -> T;
+}
diff --git a/src/lib.rs b/src/lib.rs
index 23663f2..e2d1053 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -21,6 +21,9 @@
 mod native;
 pub mod types;
 
+#[cfg(not(feature = "std"))]
+pub mod convert;
+
 #[cfg(feature = "std")]
 use std::vec::Vec;