diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3cb10e2..0de03ed 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -24,7 +24,10 @@
 - X10D.Unity: Added `Point.ToUnityVector2Int()`
 - X10D.Unity: Added `PointF.ToUnityVector2()`
 - X10D.Unity: Added `Rect.ToSystemRectangleF()`
+- X10D.Unity: Added `RectInt.ToSystemRectangle()`
+- X10D.Unity: Added `RectInt.ToSystemRectangleF()`
 - X10D.Unity: Added `Rectangle.ToUnityRect()`
+- X10D.Unity: Added `Rectangle.ToUnityRectInt()`
 - X10D.Unity: Added `RectangleF.ToUnityRect()`
 - X10D.Unity: Added `Size.ToUnityVector2()`
 - X10D.Unity: Added `Size.ToUnityVector2Int()`
diff --git a/X10D.Unity.Tests/Assets/Tests/Drawing/RectIntTests.cs b/X10D.Unity.Tests/Assets/Tests/Drawing/RectIntTests.cs
new file mode 100644
index 0000000..e58b3d2
--- /dev/null
+++ b/X10D.Unity.Tests/Assets/Tests/Drawing/RectIntTests.cs
@@ -0,0 +1,43 @@
+using System.Collections;
+using NUnit.Framework;
+using UnityEngine;
+using UnityEngine.TestTools;
+using X10D.Core;
+using X10D.Unity.Drawing;
+using Random = System.Random;
+
+namespace X10D.Unity.Tests.Drawing
+{
+    public class RectIntTests
+    {
+        [UnityTest]
+        public IEnumerator ToSystemRectangle_ShouldReturnRectangleF_WithEquivalentMembers()
+        {
+            var random = new Random();
+            var rect = new RectInt(random.Next(), random.Next(), random.Next(), random.Next());
+            var rectangle = rect.ToSystemRectangle();
+
+            Assert.AreEqual(rect.x, rectangle.X);
+            Assert.AreEqual(rect.y, rectangle.Y);
+            Assert.AreEqual(rect.width, rectangle.Width);
+            Assert.AreEqual(rect.height, rectangle.Height);
+
+            yield break;
+        }
+
+        [UnityTest]
+        public IEnumerator ToSystemRectangleF_ShouldReturnRectangleF_WithEquivalentMembers()
+        {
+            var random = new Random();
+            var rect = new RectInt(random.Next(), random.Next(), random.Next(), random.Next());
+            var rectangle = rect.ToSystemRectangleF();
+
+            Assert.AreEqual(rect.x, rectangle.X);
+            Assert.AreEqual(rect.y, rectangle.Y);
+            Assert.AreEqual(rect.width, rectangle.Width);
+            Assert.AreEqual(rect.height, rectangle.Height);
+
+            yield break;
+        }
+    }
+}
diff --git a/X10D.Unity.Tests/Assets/Tests/Drawing/RectIntTests.cs.meta b/X10D.Unity.Tests/Assets/Tests/Drawing/RectIntTests.cs.meta
new file mode 100644
index 0000000..462b6b5
--- /dev/null
+++ b/X10D.Unity.Tests/Assets/Tests/Drawing/RectIntTests.cs.meta
@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: 18f2e8fbc200475ca5fe7857a457a874
+timeCreated: 1654077768
\ No newline at end of file
diff --git a/X10D.Unity.Tests/Assets/Tests/Drawing/RectangleFTests.cs b/X10D.Unity.Tests/Assets/Tests/Drawing/RectangleFTests.cs
index b49312c..32676c4 100644
--- a/X10D.Unity.Tests/Assets/Tests/Drawing/RectangleFTests.cs
+++ b/X10D.Unity.Tests/Assets/Tests/Drawing/RectangleFTests.cs
@@ -16,7 +16,7 @@ namespace X10D.Unity.Tests.Drawing
             var random = new Random();
             var rectangle = new RectangleF(random.NextSingle(), random.NextSingle(), random.NextSingle(), random.NextSingle());
             var rect = rectangle.ToUnityRect();
-            
+
             Assert.AreEqual(rectangle.X, rect.x, 1e-6f);
             Assert.AreEqual(rectangle.Y, rect.y, 1e-6f);
             Assert.AreEqual(rectangle.Width, rect.width, 1e-6f);
diff --git a/X10D.Unity.Tests/Assets/Tests/Drawing/RectangleTests.cs b/X10D.Unity.Tests/Assets/Tests/Drawing/RectangleTests.cs
index 4a7eb2d..632e5d6 100644
--- a/X10D.Unity.Tests/Assets/Tests/Drawing/RectangleTests.cs
+++ b/X10D.Unity.Tests/Assets/Tests/Drawing/RectangleTests.cs
@@ -15,7 +15,22 @@ namespace X10D.Unity.Tests.Drawing
             var random = new Random();
             var rectangle = new Rectangle(random.Next(), random.Next(), random.Next(), random.Next());
             var rect = rectangle.ToUnityRect();
-            
+
+            Assert.AreEqual(rectangle.X, rect.x);
+            Assert.AreEqual(rectangle.Y, rect.y);
+            Assert.AreEqual(rectangle.Width, rect.width);
+            Assert.AreEqual(rectangle.Height, rect.height);
+
+            yield break;
+        }
+
+        [UnityTest]
+        public IEnumerator ToUnityRectInt_ShouldReturnRect_WithEquivalentMembers()
+        {
+            var random = new Random();
+            var rectangle = new Rectangle(random.Next(), random.Next(), random.Next(), random.Next());
+            var rect = rectangle.ToUnityRectInt();
+
             Assert.AreEqual(rectangle.X, rect.x);
             Assert.AreEqual(rectangle.Y, rect.y);
             Assert.AreEqual(rectangle.Width, rect.width);
diff --git a/X10D.Unity/src/Drawing/RectIntExtensions.cs b/X10D.Unity/src/Drawing/RectIntExtensions.cs
new file mode 100644
index 0000000..51b6fc4
--- /dev/null
+++ b/X10D.Unity/src/Drawing/RectIntExtensions.cs
@@ -0,0 +1,36 @@
+using System.Diagnostics.Contracts;
+using System.Drawing;
+using System.Runtime.CompilerServices;
+using UnityEngine;
+
+namespace X10D.Unity.Drawing;
+
+/// <summary>
+///     Drawing-related extension methods for <see cref="RectInt" />.
+/// </summary>
+public static class RectIntExtensions
+{
+    /// <summary>
+    ///     Converts the current <see cref="RectInt" /> to a <see cref="Rectangle" />.
+    /// </summary>
+    /// <param name="rectangle">The rectangle to convert.</param>
+    /// <returns>The converted rectangle.</returns>
+    [Pure]
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static Rectangle ToSystemRectangle(this RectInt rectangle)
+    {
+        return new Rectangle(rectangle.x, rectangle.y, rectangle.width, rectangle.height);
+    }
+
+    /// <summary>
+    ///     Converts the current <see cref="RectInt" /> to a <see cref="RectangleF" />.
+    /// </summary>
+    /// <param name="rectangle">The rectangle to convert.</param>
+    /// <returns>The converted rectangle.</returns>
+    [Pure]
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static RectangleF ToSystemRectangleF(this RectInt rectangle)
+    {
+        return new RectangleF(rectangle.x, rectangle.y, rectangle.width, rectangle.height);
+    }
+}
diff --git a/X10D.Unity/src/Drawing/RectangleExtensions.cs b/X10D.Unity/src/Drawing/RectangleExtensions.cs
index 371ccae..5c5977d 100644
--- a/X10D.Unity/src/Drawing/RectangleExtensions.cs
+++ b/X10D.Unity/src/Drawing/RectangleExtensions.cs
@@ -21,4 +21,16 @@ public static class RectangleExtensions
     {
         return new Rect(rectangle.X, rectangle.Y, rectangle.Width, rectangle.Height);
     }
+
+    /// <summary>
+    ///     Converts the current <see cref="Rectangle" /> to a <see cref="RectInt" />.
+    /// </summary>
+    /// <param name="rectangle">The rectangle to convert.</param>
+    /// <returns>The converted rectangle.</returns>
+    [Pure]
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static RectInt ToUnityRectInt(this Rectangle rectangle)
+    {
+        return new RectInt(rectangle.X, rectangle.Y, rectangle.Width, rectangle.Height);
+    }
 }