diff --git a/ctru-rs/src/applets/swkbd.rs b/ctru-rs/src/applets/swkbd.rs
index bc2553a..0d77fc2 100644
--- a/ctru-rs/src/applets/swkbd.rs
+++ b/ctru-rs/src/applets/swkbd.rs
@@ -213,26 +213,7 @@ impl Default for Swkbd {
     }
 }
 
-impl From<Kind> for u32 {
-    fn from(value: Kind) -> Self {
-        value as u32
-    }
-}
-
-impl From<Button> for u32 {
-    fn from(value: Button) -> Self {
-        value as u32
-    }
-}
-
-impl From<Error> for u32 {
-    fn from(value: Error) -> Self {
-        value as u32
-    }
-}
-
-impl From<ValidInput> for i32 {
-    fn from(value: ValidInput) -> Self {
-        value as i32
-    }
-}
+from_type_to_u32!(Kind);
+from_type_to_u32!(Button);
+from_type_to_u32!(Error);
+from_type_to_i32!(ValidInput);
diff --git a/ctru-rs/src/lib.rs b/ctru-rs/src/lib.rs
index bcd60e0..a841e78 100644
--- a/ctru-rs/src/lib.rs
+++ b/ctru-rs/src/lib.rs
@@ -15,6 +15,46 @@ extern crate pthread_3ds;
 #[cfg(feature = "big-stack")]
 static __stacksize__: usize = 2 * 1024 * 1024; // 2MB
 
+macro_rules! from_type_to_u8 {
+    ($from_type:ty) => {
+        impl From<$from_type> for u8 {
+            fn from(v: $from_type) -> Self {
+                v as u8
+            }
+        }
+    };
+}
+
+macro_rules! from_type_to_u16 {
+    ($from_type:ty) => {
+        impl From<$from_type> for u16 {
+            fn from(v: $from_type) -> Self {
+                v as u16
+            }
+        }
+    };
+}
+
+macro_rules! from_type_to_u32 {
+    ($from_type:ty) => {
+        impl From<$from_type> for u32 {
+            fn from(v: $from_type) -> Self {
+                v as u32
+            }
+        }
+    };
+}
+
+macro_rules! from_type_to_i32 {
+    ($from_type:ty) => {
+        impl From<$from_type> for i32 {
+            fn from(v: $from_type) -> Self {
+                v as i32
+            }
+        }
+    };
+}
+
 /// Activate the default panic handler.
 ///
 /// With this implementation, the main thread will stop and try to print debug info to an available [console::Console].
diff --git a/ctru-rs/src/services/am.rs b/ctru-rs/src/services/am.rs
index 100b5fa..d090660 100644
--- a/ctru-rs/src/services/am.rs
+++ b/ctru-rs/src/services/am.rs
@@ -34,7 +34,7 @@ impl<'a> Title<'a> {
 
         unsafe {
             ResultCode(ctru_sys::AM_GetTitleProductCode(
-                self.mediatype as u32,
+                self.mediatype.into(),
                 self.id,
                 buf.as_mut_ptr(),
             ))?;
@@ -47,7 +47,7 @@ impl<'a> Title<'a> {
 
         unsafe {
             ResultCode(ctru_sys::AM_GetTitleInfo(
-                self.mediatype as u32,
+                self.mediatype.into(),
                 1,
                 &mut self.id.clone(),
                 info.as_mut_ptr() as _,
@@ -71,7 +71,7 @@ impl Am {
     pub fn get_title_count(&self, mediatype: FsMediaType) -> crate::Result<u32> {
         unsafe {
             let mut count = 0;
-            ResultCode(ctru_sys::AM_GetTitleCount(mediatype as u32, &mut count))?;
+            ResultCode(ctru_sys::AM_GetTitleCount(mediatype.into(), &mut count))?;
             Ok(count)
         }
     }
@@ -83,7 +83,7 @@ impl Am {
         unsafe {
             ResultCode(ctru_sys::AM_GetTitleList(
                 &mut read_amount,
-                mediatype as u32,
+                mediatype.into(),
                 count,
                 buf.as_mut_ptr(),
             ))?;
diff --git a/ctru-rs/src/services/cam.rs b/ctru-rs/src/services/cam.rs
index 3d05089..2f0f29f 100644
--- a/ctru-rs/src/services/cam.rs
+++ b/ctru-rs/src/services/cam.rs
@@ -382,7 +382,7 @@ pub trait Camera {
         unsafe {
             ResultCode(ctru_sys::CAMU_SetWhiteBalance(
                 self.camera_as_raw(),
-                white_balance as u32,
+                white_balance.into(),
             ))?;
             Ok(())
         }
@@ -397,7 +397,7 @@ pub trait Camera {
         unsafe {
             ResultCode(ctru_sys::CAMU_SetWhiteBalanceWithoutBaseUp(
                 self.camera_as_raw(),
-                white_balance as u32,
+                white_balance.into(),
             ))?;
             Ok(())
         }
@@ -462,7 +462,7 @@ pub trait Camera {
         unsafe {
             ResultCode(ctru_sys::CAMU_FlipImage(
                 self.camera_as_raw(),
-                flip as u32,
+                flip.into(),
                 ctru_sys::CONTEXT_A,
             ))?;
             Ok(())
@@ -508,7 +508,7 @@ pub trait Camera {
         unsafe {
             ResultCode(ctru_sys::CAMU_SetSize(
                 self.camera_as_raw(),
-                size as u32,
+                size.into(),
                 ctru_sys::CONTEXT_A,
             ))?;
             Ok(())
@@ -520,7 +520,7 @@ pub trait Camera {
         unsafe {
             ResultCode(ctru_sys::CAMU_SetFrameRate(
                 self.camera_as_raw(),
-                frame_rate as u32,
+                frame_rate.into(),
             ))?;
             Ok(())
         }
@@ -531,7 +531,7 @@ pub trait Camera {
         unsafe {
             ResultCode(ctru_sys::CAMU_SetPhotoMode(
                 self.camera_as_raw(),
-                photo_mode as u32,
+                photo_mode.into(),
             ))?;
             Ok(())
         }
@@ -544,7 +544,7 @@ pub trait Camera {
         unsafe {
             ResultCode(ctru_sys::CAMU_SetEffect(
                 self.camera_as_raw(),
-                effect as u32,
+                effect.into(),
                 ctru_sys::CONTEXT_A,
             ))?;
             Ok(())
@@ -556,7 +556,7 @@ pub trait Camera {
         unsafe {
             ResultCode(ctru_sys::CAMU_SetContrast(
                 self.camera_as_raw(),
-                contrast as u32,
+                contrast.into(),
             ))?;
             Ok(())
         }
@@ -567,7 +567,7 @@ pub trait Camera {
         unsafe {
             ResultCode(ctru_sys::CAMU_SetLensCorrection(
                 self.camera_as_raw(),
-                lens_correction as u32,
+                lens_correction.into(),
             ))?;
             Ok(())
         }
@@ -578,7 +578,7 @@ pub trait Camera {
         unsafe {
             ResultCode(ctru_sys::CAMU_SetOutputFormat(
                 self.camera_as_raw(),
-                format as u32,
+                format.into(),
                 ctru_sys::CONTEXT_A,
             ))?;
             Ok(())
@@ -782,7 +782,7 @@ impl Cam {
     /// Plays the specified sound based on the [ShutterSound] argument
     pub fn play_shutter_sound(&self, sound: ShutterSound) -> crate::Result<()> {
         unsafe {
-            ResultCode(ctru_sys::CAMU_PlayShutterSound(sound as u32))?;
+            ResultCode(ctru_sys::CAMU_PlayShutterSound(sound.into()))?;
             Ok(())
         }
     }
@@ -793,3 +793,14 @@ impl Drop for Cam {
         unsafe { ctru_sys::camExit() };
     }
 }
+
+from_type_to_u32!(FlipMode);
+from_type_to_u32!(ViewSize);
+from_type_to_u32!(FrameRate);
+from_type_to_u32!(WhiteBalance);
+from_type_to_u32!(PhotoMode);
+from_type_to_u32!(Effect);
+from_type_to_u32!(Contrast);
+from_type_to_u32!(LensCorrection);
+from_type_to_u32!(OutputFormat);
+from_type_to_u32!(ShutterSound);
diff --git a/ctru-rs/src/services/cfgu.rs b/ctru-rs/src/services/cfgu.rs
index 603db7e..0d1b19c 100644
--- a/ctru-rs/src/services/cfgu.rs
+++ b/ctru-rs/src/services/cfgu.rs
@@ -115,16 +115,6 @@ impl Drop for Cfgu {
     }
 }
 
-macro_rules! from_type_to_u8 {
-    ($from_type:ty) => {
-        impl From<$from_type> for u8 {
-            fn from(v: $from_type) -> Self {
-                v as u8
-            }
-        }
-    };
-}
-
 from_type_to_u8!(Region);
 from_type_to_u8!(Language);
 from_type_to_u8!(SystemModel);
diff --git a/ctru-rs/src/services/fs.rs b/ctru-rs/src/services/fs.rs
index c89fec2..dd8b520 100644
--- a/ctru-rs/src/services/fs.rs
+++ b/ctru-rs/src/services/fs.rs
@@ -1018,45 +1018,6 @@ impl Drop for Dir {
     }
 }
 
-impl From<PathType> for ctru_sys::FS_PathType {
-    fn from(p: PathType) -> Self {
-        use self::PathType::*;
-        match p {
-            Invalid => ctru_sys::PATH_INVALID,
-            Empty => ctru_sys::PATH_EMPTY,
-            Binary => ctru_sys::PATH_BINARY,
-            ASCII => ctru_sys::PATH_ASCII,
-            UTF16 => ctru_sys::PATH_UTF16,
-        }
-    }
-}
-
-impl From<ArchiveID> for ctru_sys::FS_ArchiveID {
-    fn from(a: ArchiveID) -> Self {
-        use self::ArchiveID::*;
-        match a {
-            RomFS => ctru_sys::ARCHIVE_ROMFS,
-            Savedata => ctru_sys::ARCHIVE_SAVEDATA,
-            Extdata => ctru_sys::ARCHIVE_EXTDATA,
-            SharedExtdata => ctru_sys::ARCHIVE_SHARED_EXTDATA,
-            SystemSavedata => ctru_sys::ARCHIVE_SYSTEM_SAVEDATA,
-            Sdmc => ctru_sys::ARCHIVE_SDMC,
-            SdmcWriteOnly => ctru_sys::ARCHIVE_SDMC_WRITE_ONLY,
-            BossExtdata => ctru_sys::ARCHIVE_BOSS_EXTDATA,
-            CardSpiFS => ctru_sys::ARCHIVE_CARD_SPIFS,
-            ExtDataAndBossExtdata => ctru_sys::ARCHIVE_EXTDATA_AND_BOSS_EXTDATA,
-            SystemSaveData2 => ctru_sys::ARCHIVE_SYSTEM_SAVEDATA2,
-            NandRW => ctru_sys::ARCHIVE_NAND_RW,
-            NandRO => ctru_sys::ARCHIVE_NAND_RO,
-            NandROWriteAccess => ctru_sys::ARCHIVE_NAND_RO_WRITE_ACCESS,
-            SaveDataAndContent => ctru_sys::ARCHIVE_SAVEDATA_AND_CONTENT,
-            SaveDataAndContent2 => ctru_sys::ARCHIVE_SAVEDATA_AND_CONTENT2,
-            NandCtrFS => ctru_sys::ARCHIVE_NAND_CTR_FS,
-            TwlPhoto => ctru_sys::ARCHIVE_TWL_PHOTO,
-            NandTwlFS => ctru_sys::ARCHIVE_NAND_TWL_FS,
-            GameCardSavedata => ctru_sys::ARCHIVE_GAMECARD_SAVEDATA,
-            UserSavedata => ctru_sys::ARCHIVE_USER_SAVEDATA,
-            DemoSavedata => ctru_sys::ARCHIVE_DEMO_SAVEDATA,
-        }
-    }
-}
+from_type_to_u32!(FsMediaType);
+from_type_to_u32!(PathType);
+from_type_to_u32!(ArchiveID);
diff --git a/ctru-rs/src/services/gfx.rs b/ctru-rs/src/services/gfx.rs
index 457f94d..355e938 100644
--- a/ctru-rs/src/services/gfx.rs
+++ b/ctru-rs/src/services/gfx.rs
@@ -283,14 +283,7 @@ impl Screen for BottomScreen {
     }
 }
 
-impl From<Side> for ctru_sys::gfx3dSide_t {
-    fn from(s: Side) -> ctru_sys::gfx3dSide_t {
-        match s {
-            Side::Left => ctru_sys::GFX_LEFT,
-            Side::Right => ctru_sys::GFX_RIGHT,
-        }
-    }
-}
+from_type_to_u32!(Side);
 
 #[cfg(test)]
 mod tests {
diff --git a/ctru-rs/src/services/gspgpu.rs b/ctru-rs/src/services/gspgpu.rs
index 73fb77d..29ca102 100644
--- a/ctru-rs/src/services/gspgpu.rs
+++ b/ctru-rs/src/services/gspgpu.rs
@@ -1,7 +1,5 @@
 //! GSPGPU service
 
-use std::convert::From;
-
 #[derive(Copy, Clone, Debug)]
 #[repr(u32)]
 pub enum Event {
@@ -67,30 +65,5 @@ impl From<ctru_sys::GSPGPU_FramebufferFormat> for FramebufferFormat {
     }
 }
 
-impl From<FramebufferFormat> for ctru_sys::GSPGPU_FramebufferFormat {
-    fn from(g: FramebufferFormat) -> Self {
-        use self::FramebufferFormat::*;
-        match g {
-            Rgba8 => ctru_sys::GSP_RGBA8_OES,
-            Bgr8 => ctru_sys::GSP_BGR8_OES,
-            Rgb565 => ctru_sys::GSP_RGB565_OES,
-            Rgb5A1 => ctru_sys::GSP_RGB5_A1_OES,
-            Rgba4 => ctru_sys::GSP_RGBA4_OES,
-        }
-    }
-}
-
-impl From<Event> for ctru_sys::GSPGPU_Event {
-    fn from(ev: Event) -> Self {
-        use self::Event::*;
-        match ev {
-            Psc0 => ctru_sys::GSPGPU_EVENT_PSC0,
-            Psc1 => ctru_sys::GSPGPU_EVENT_PSC1,
-            VBlank0 => ctru_sys::GSPGPU_EVENT_VBlank0,
-            VBlank1 => ctru_sys::GSPGPU_EVENT_VBlank1,
-            PPF => ctru_sys::GSPGPU_EVENT_PPF,
-            P3D => ctru_sys::GSPGPU_EVENT_P3D,
-            DMA => ctru_sys::GSPGPU_EVENT_DMA,
-        }
-    }
-}
+from_type_to_u32!(FramebufferFormat);
+from_type_to_u32!(Event);
diff --git a/ctru-rs/src/services/ndsp/mod.rs b/ctru-rs/src/services/ndsp/mod.rs
index ee366d4..832e586 100644
--- a/ctru-rs/src/services/ndsp/mod.rs
+++ b/ctru-rs/src/services/ndsp/mod.rs
@@ -115,7 +115,7 @@ impl Ndsp {
 
     /// Set the audio output mode. Defaults to `OutputMode::Stereo`.
     pub fn set_output_mode(&mut self, mode: OutputMode) {
-        unsafe { ctru_sys::ndspSetOutputMode(mode as u32) };
+        unsafe { ctru_sys::ndspSetOutputMode(mode.into()) };
     }
 }
 
@@ -163,12 +163,12 @@ impl Channel<'_> {
     /// Set the channel's output format.
     /// Change this setting based on the used sample's format.
     pub fn set_format(&self, format: AudioFormat) {
-        unsafe { ctru_sys::ndspChnSetFormat(self.id.into(), format as u16) };
+        unsafe { ctru_sys::ndspChnSetFormat(self.id.into(), format.into()) };
     }
 
     /// Set the channel's interpolation mode.
     pub fn set_interpolation(&self, interp_type: InterpolationType) {
-        unsafe { ctru_sys::ndspChnSetInterp(self.id.into(), interp_type as u32) };
+        unsafe { ctru_sys::ndspChnSetInterp(self.id.into(), interp_type.into()) };
     }
 
     /// Set the channel's volume mix.
@@ -340,3 +340,7 @@ impl Drop for Ndsp {
         }
     }
 }
+
+from_type_to_u32!(InterpolationType);
+from_type_to_u32!(OutputMode);
+from_type_to_u16!(AudioFormat);
diff --git a/ctru-rs/src/services/ps.rs b/ctru-rs/src/services/ps.rs
index 8795b32..552a34e 100644
--- a/ctru-rs/src/services/ps.rs
+++ b/ctru-rs/src/services/ps.rs
@@ -70,6 +70,9 @@ impl Drop for Ps {
     }
 }
 
+from_type_to_u32!(AESAlgorithm);
+from_type_to_u32!(AESKeyType);
+
 #[cfg(test)]
 mod tests {
     use std::collections::HashMap;