diff --git a/release_notes.md b/release_notes.md
index 9a7730feb..9aa8935b2 100644
--- a/release_notes.md
+++ b/release_notes.md
@@ -1,4 +1,5 @@
 ###In Development
+  - [#294](https://github.com/MehdiK/Humanizer/pull/294): Added support for untyped comparison of ByteSize
   - [#277](https://github.com/MehdiK/Humanizer/pull/277): Added support for custom enum description attribute property names
   - [#276](https://github.com/Mehdik/Humanizer/pull/276): Added Farsi ToOrdinalWords
   - [#281](https://github.com/Mehdik/Humanizer/pull/281): Changed the logic for handling hyphenation and large numbers ending in twelve for English ordinal words; e.g. before "twenty first" now "twenty-first"
diff --git a/src/Humanizer.Tests/ApiApprover/PublicApiApprovalTest.approve_public_api.approved.txt b/src/Humanizer.Tests/ApiApprover/PublicApiApprovalTest.approve_public_api.approved.txt
index 3a2bd3dd3..79bae93e1 100644
--- a/src/Humanizer.Tests/ApiApprover/PublicApiApprovalTest.approve_public_api.approved.txt
+++ b/src/Humanizer.Tests/ApiApprover/PublicApiApprovalTest.approve_public_api.approved.txt
@@ -29,6 +29,7 @@
     public Humanizer.Bytes.ByteSize AddKilobytes(double value) { }
     public Humanizer.Bytes.ByteSize AddMegabytes(double value) { }
     public Humanizer.Bytes.ByteSize AddTerabytes(double value) { }
+    public int CompareTo(object obj) { }
     public int CompareTo(Humanizer.Bytes.ByteSize other) { }
     public bool Equals(object value) { }
     public bool Equals(Humanizer.Bytes.ByteSize value) { }
diff --git a/src/Humanizer.Tests/Bytes/ComparingTests.cs b/src/Humanizer.Tests/Bytes/ComparingTests.cs
new file mode 100644
index 000000000..a1877a372
--- /dev/null
+++ b/src/Humanizer.Tests/Bytes/ComparingTests.cs
@@ -0,0 +1,48 @@
+using System.Collections.Generic;
+using System.Linq;
+using Humanizer.Bytes;
+using Xunit;
+using Xunit.Extensions;
+
+namespace Humanizer.Tests.Bytes
+{
+    public class ComparingTests
+    {
+        [Theory]
+        [InlineData(13, 23, -1)]
+        [InlineData(23, 23, 0)]
+        [InlineData(45, 23, 1)]
+        public void CompareStrongTyped(double value, double valueToCompareWith, int expectedResult)
+        {
+            var valueSize = new ByteSize(value);
+            var otherSize = new ByteSize(valueToCompareWith);
+            var result = valueSize.CompareTo(otherSize);
+
+            Assert.Equal(expectedResult, result);
+        }
+
+        [Theory]
+        [InlineData(13, 23, -1)]
+        [InlineData(23, 23, 0)]
+        [InlineData(45, 23, 1)]
+        public void CompareUntyped(double value, double valueToCompareWith, int expectedResult)
+        {
+            var valueSize = new ByteSize(value);
+            object otherSize = new ByteSize(valueToCompareWith);
+            var result = valueSize.CompareTo(otherSize);
+
+            Assert.Equal(expectedResult, result);
+        }
+
+        [Theory]
+        [InlineData(new[] { "1GB", "3KB", "5MB" }, new[] { "3KB", "5MB", "1GB"})]
+        [InlineData(new[] { "1MB", "3KB", "5MB" }, new[] { "3KB", "1MB", "5MB"})]
+        public void SortList(IEnumerable<string> values, IEnumerable<string> expected)
+        {
+            var list = values.Select(ByteSize.Parse).ToList();
+            list.Sort();
+
+            Assert.Equal(expected.Select(ByteSize.Parse), list);
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/Humanizer.Tests/Humanizer.Tests.csproj b/src/Humanizer.Tests/Humanizer.Tests.csproj
index 9d2a1d449..b50f55872 100644
--- a/src/Humanizer.Tests/Humanizer.Tests.csproj
+++ b/src/Humanizer.Tests/Humanizer.Tests.csproj
@@ -56,6 +56,7 @@
     </Reference>
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="Bytes\ComparingTests.cs" />
     <Compile Include="Bytes\CreatingTests.cs" />
     <Compile Include="Bytes\ByteSizeExtensionsTests.cs" />
     <Compile Include="Bytes\ParsingTests.cs" />
diff --git a/src/Humanizer/Bytes/ByteSize.cs b/src/Humanizer/Bytes/ByteSize.cs
index 253f749d5..89388bcaf 100644
--- a/src/Humanizer/Bytes/ByteSize.cs
+++ b/src/Humanizer/Bytes/ByteSize.cs
@@ -28,7 +28,7 @@ namespace Humanizer.Bytes
     /// Represents a byte size value.
     /// </summary>
 #pragma warning disable 1591
-    public struct ByteSize : IComparable<ByteSize>, IEquatable<ByteSize>
+    public struct ByteSize : IComparable<ByteSize>, IEquatable<ByteSize>, IComparable
     {
         public static readonly ByteSize MinValue = FromBits(long.MinValue);
         public static readonly ByteSize MaxValue = FromBits(long.MaxValue);
@@ -205,6 +205,17 @@ public override int GetHashCode()
             return Bits.GetHashCode();
         }
 
+        public int CompareTo(object obj)
+        {
+            if (obj == null)
+                return 1;
+
+            if (!(obj is ByteSize))
+                throw new ArgumentException("Object is not a ByteSize");
+
+            return CompareTo((ByteSize) obj);
+        }
+
         public int CompareTo(ByteSize other)
         {
             return Bits.CompareTo(other.Bits);