diff --git a/CHANGELOG.md b/CHANGELOG.md
index d88de9d9..a14bc047 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -23,6 +23,7 @@
 - On Windows, added `WindowBuilderExtWindows::with_owner_window` to allow creating popup windows.
 - On Windows, added `WindowExtWindows::set_enable` to allow creating modal popup windows.
 - On macOS, emit `RedrawRequested` events immediately while the window is being resized.
+- Implement `Default`, `Hash`, and `Eq` for `LogicalPosition`, `PhysicalPosition`, `LogicalSize`, and `PhysicalSize`.
 
 # 0.24.0 (2020-12-09)
 
diff --git a/src/dpi.rs b/src/dpi.rs
index ed30abb7..ff0b0c95 100644
--- a/src/dpi.rs
+++ b/src/dpi.rs
@@ -163,7 +163,7 @@ pub fn validate_scale_factor(scale_factor: f64) -> bool {
 /// The position is stored as floats, so please be careful. Casting floats to integers truncates the
 /// fractional part, which can cause noticable issues. To help with that, an `Into<(i32, i32)>`
 /// implementation is provided which does the rounding for you.
-#[derive(Debug, Copy, Clone, PartialEq)]
+#[derive(Debug, Copy, Clone, Eq, PartialEq, Default, Hash)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 pub struct LogicalPosition<P> {
     pub x: P,
@@ -228,7 +228,7 @@ impl<P: Pixel, X: Pixel> Into<[X; 2]> for LogicalPosition<P> {
 }
 
 /// A position represented in physical pixels.
-#[derive(Debug, Copy, Clone, PartialEq)]
+#[derive(Debug, Copy, Clone, Eq, PartialEq, Default, Hash)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 pub struct PhysicalPosition<P> {
     pub x: P,
@@ -293,7 +293,7 @@ impl<P: Pixel, X: Pixel> Into<[X; 2]> for PhysicalPosition<P> {
 }
 
 /// A size represented in logical pixels.
-#[derive(Debug, Copy, Clone, PartialEq)]
+#[derive(Debug, Copy, Clone, Eq, PartialEq, Default, Hash)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 pub struct LogicalSize<P> {
     pub width: P,
@@ -358,7 +358,7 @@ impl<P: Pixel, X: Pixel> Into<[X; 2]> for LogicalSize<P> {
 }
 
 /// A size represented in physical pixels.
-#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
+#[derive(Debug, Copy, Clone, Eq, PartialEq, Default, Hash)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 pub struct PhysicalSize<P> {
     pub width: P,