diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2be5dfad..9df5e037 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,7 @@
 - On Windows, fix bug where `RedrawRequested` would only get emitted every other iteration of the event loop.
 - On X11, fix deadlock on window state when handling certain window events.
 - `WindowBuilder` now implements `Default`.
+- **Breaking:** `WindowEvent::CursorMoved` changed to `f64` units, preserving high-precision data supplied by most backends
 
 # 0.20.0 (2020-01-05)
 
diff --git a/src/event.rs b/src/event.rs
index 9f30e881..10ab6217 100644
--- a/src/event.rs
+++ b/src/event.rs
@@ -242,7 +242,7 @@ pub enum WindowEvent<'a> {
         /// (x,y) coords in pixels relative to the top-left corner of the window. Because the range of this data is
         /// limited by the display area and it may have been transformed by the OS to implement effects such as cursor
         /// acceleration, it should not be used to implement non-cursor-like interactions such as 3D camera control.
-        position: PhysicalPosition<i32>,
+        position: PhysicalPosition<f64>,
         #[deprecated = "Deprecated in favor of DeviceEvent::ModifiersChanged"]
         modifiers: ModifiersState,
     },
diff --git a/src/platform_impl/linux/x11/event_processor.rs b/src/platform_impl/linux/x11/event_processor.rs
index 14fc1b1f..424bb89c 100644
--- a/src/platform_impl/linux/x11/event_processor.rs
+++ b/src/platform_impl/linux/x11/event_processor.rs
@@ -723,8 +723,7 @@ impl<T: 'static> EventProcessor<T> {
                             util::maybe_change(&mut shared_state_lock.cursor_pos, new_cursor_pos)
                         });
                         if cursor_moved == Some(true) {
-                            let position =
-                                PhysicalPosition::new(xev.event_x as i32, xev.event_y as i32);
+                            let position = PhysicalPosition::new(xev.event_x, xev.event_y);
 
                             callback(Event::WindowEvent {
                                 window_id,
@@ -830,8 +829,7 @@ impl<T: 'static> EventProcessor<T> {
                                 event: CursorEntered { device_id },
                             });
 
-                            let position =
-                                PhysicalPosition::new(xev.event_x as i32, xev.event_y as i32);
+                            let position = PhysicalPosition::new(xev.event_x, xev.event_y);
 
                             // The mods field on this event isn't actually populated, so query the
                             // pointer device. In the future, we can likely remove this round-trip by
@@ -899,8 +897,7 @@ impl<T: 'static> EventProcessor<T> {
                             .map(|device| device.attachment)
                             .unwrap_or(2);
 
-                        let position =
-                            PhysicalPosition::new(xev.event_x as i32, xev.event_y as i32);
+                        let position = PhysicalPosition::new(xev.event_x, xev.event_y);
 
                         callback(Event::WindowEvent {
                             window_id,
diff --git a/src/platform_impl/web/stdweb/canvas.rs b/src/platform_impl/web/stdweb/canvas.rs
index 94586d04..35bc8044 100644
--- a/src/platform_impl/web/stdweb/canvas.rs
+++ b/src/platform_impl/web/stdweb/canvas.rs
@@ -207,7 +207,7 @@ impl Canvas {
 
     pub fn on_cursor_move<F>(&mut self, mut handler: F)
     where
-        F: 'static + FnMut(i32, PhysicalPosition<i32>, ModifiersState),
+        F: 'static + FnMut(i32, PhysicalPosition<f64>, ModifiersState),
     {
         // todo
         self.on_cursor_move = Some(self.add_event(move |event: PointerMoveEvent| {
diff --git a/src/platform_impl/web/web_sys/canvas.rs b/src/platform_impl/web/web_sys/canvas.rs
index 70b0ecc9..1d7e4746 100644
--- a/src/platform_impl/web/web_sys/canvas.rs
+++ b/src/platform_impl/web/web_sys/canvas.rs
@@ -216,7 +216,7 @@ impl Canvas {
 
     pub fn on_cursor_move<F>(&mut self, mut handler: F)
     where
-        F: 'static + FnMut(i32, PhysicalPosition<i32>, ModifiersState),
+        F: 'static + FnMut(i32, PhysicalPosition<f64>, ModifiersState),
     {
         self.on_cursor_move = Some(self.add_event("pointermove", move |event: PointerEvent| {
             handler(
diff --git a/src/platform_impl/windows/event_loop.rs b/src/platform_impl/windows/event_loop.rs
index 8d90e247..beb3cef5 100644
--- a/src/platform_impl/windows/event_loop.rs
+++ b/src/platform_impl/windows/event_loop.rs
@@ -855,8 +855,8 @@ unsafe extern "system" fn public_window_callback<T: 'static>(
                 });
             }
 
-            let x = windowsx::GET_X_LPARAM(lparam) as i32;
-            let y = windowsx::GET_Y_LPARAM(lparam) as i32;
+            let x = windowsx::GET_X_LPARAM(lparam) as f64;
+            let y = windowsx::GET_Y_LPARAM(lparam) as f64;
             let position = PhysicalPosition::new(x, y);
 
             subclass_input.send_event(Event::WindowEvent {