diff --git a/CutList.Core/ArchUnits.cs b/CutList.Core/Formatting/ArchUnits.cs
similarity index 98%
rename from CutList.Core/ArchUnits.cs
rename to CutList.Core/Formatting/ArchUnits.cs
index 22bbbc3..25049bd 100644
--- a/CutList.Core/ArchUnits.cs
+++ b/CutList.Core/Formatting/ArchUnits.cs
@@ -1,8 +1,7 @@
-using System;
 using System.Text;
 using System.Text.RegularExpressions;
 
-namespace CutList.Core
+namespace CutList.Core.Formatting
 {
     public static class ArchUnits
     {
@@ -72,4 +71,4 @@ namespace CutList.Core
             }
         }
     }
-}
\ No newline at end of file
+}
diff --git a/CutList.Core/FormatHelper.cs b/CutList.Core/Formatting/FormatHelper.cs
similarity index 98%
rename from CutList.Core/FormatHelper.cs
rename to CutList.Core/Formatting/FormatHelper.cs
index 0d88a8a..73daa5b 100644
--- a/CutList.Core/FormatHelper.cs
+++ b/CutList.Core/Formatting/FormatHelper.cs
@@ -1,6 +1,4 @@
-using System;
-
-namespace CutList.Core
+namespace CutList.Core.Formatting
 {
     /// <summary>
     /// Provides formatting utilities for displaying measurements and values.
diff --git a/CutList.Core/Fraction.cs b/CutList.Core/Formatting/Fraction.cs
similarity index 97%
rename from CutList.Core/Fraction.cs
rename to CutList.Core/Formatting/Fraction.cs
index 3bd203e..efa6e99 100644
--- a/CutList.Core/Fraction.cs
+++ b/CutList.Core/Formatting/Fraction.cs
@@ -1,9 +1,7 @@
-using System;
-using System.Linq;
 using System.Text;
 using System.Text.RegularExpressions;
 
-namespace CutList.Core
+namespace CutList.Core.Formatting
 {
     public static class Fraction
     {
@@ -82,4 +80,4 @@ namespace CutList.Core
             return true;
         }
     }
-}
\ No newline at end of file
+}