diff --git a/crates/bevy_math/src/primitives/dim2.rs b/crates/bevy_math/src/primitives/dim2.rs
index 2befff6808..09eb970200 100644
--- a/crates/bevy_math/src/primitives/dim2.rs
+++ b/crates/bevy_math/src/primitives/dim2.rs
@@ -538,6 +538,15 @@ impl Rectangle {
         }
     }
 
+    /// Create a `Rectangle` from a single length.
+    /// The resulting `Rectangle` will be the same size in every direction.
+    #[inline(always)]
+    pub fn from_length(length: f32) -> Self {
+        Self {
+            half_size: Vec2::splat(length / 2.0),
+        }
+    }
+
     /// Get the size of the rectangle
     #[inline(always)]
     pub fn size(&self) -> Vec2 {
diff --git a/crates/bevy_math/src/primitives/dim3.rs b/crates/bevy_math/src/primitives/dim3.rs
index 4eca086972..05b682f096 100644
--- a/crates/bevy_math/src/primitives/dim3.rs
+++ b/crates/bevy_math/src/primitives/dim3.rs
@@ -422,6 +422,15 @@ impl Cuboid {
         }
     }
 
+    /// Create a `Cuboid` from a single length.
+    /// The resulting `Cuboid` will be the same size in every direction.
+    #[inline(always)]
+    pub fn from_length(length: f32) -> Self {
+        Self {
+            half_size: Vec3::splat(length / 2.0),
+        }
+    }
+
     /// Get the size of the cuboid
     #[inline(always)]
     pub fn size(&self) -> Vec3 {
diff --git a/crates/bevy_render/src/mesh/primitives/dim3/plane.rs b/crates/bevy_render/src/mesh/primitives/dim3/plane.rs
index 5fa8546c2a..02043acf48 100644
--- a/crates/bevy_render/src/mesh/primitives/dim3/plane.rs
+++ b/crates/bevy_render/src/mesh/primitives/dim3/plane.rs
@@ -46,6 +46,16 @@ impl PlaneMeshBuilder {
         }
     }
 
+    /// Creates a new [`PlaneMeshBuilder`] from the given length, with the normal pointing upwards,
+    /// and the resulting [`PlaneMeshBuilder`] being a square.
+    #[inline]
+    pub fn from_length(length: f32) -> Self {
+        Self {
+            half_size: Vec2::splat(length) / 2.0,
+            ..Default::default()
+        }
+    }
+
     /// Sets the normal of the plane, aka the direction the plane is facing.
     #[inline]
     #[doc(alias = "facing")]