diff --git a/SabreTools.Text.Extensions.Test/NumberHelperTests.cs b/SabreTools.Text.Extensions.Test/NumberHelperTests.cs
index 74f3b72..a1b97bc 100644
--- a/SabreTools.Text.Extensions.Test/NumberHelperTests.cs
+++ b/SabreTools.Text.Extensions.Test/NumberHelperTests.cs
@@ -1,4 +1,5 @@
 using System;
+using System.Globalization;
 using Xunit;
 
 namespace SabreTools.Text.Extensions.Test
@@ -31,6 +32,17 @@ namespace SabreTools.Text.Extensions.Test
             Assert.True(variance < 0.1f);
         }
 
+        [Theory]
+        [InlineData("en-US")]
+        [InlineData("de-DE")]
+        [InlineData("fr-FR")]
+        public void ConvertToDoubleTest_CurrentCultureIgnored(string culture)
+        {
+            CultureInfo.CurrentCulture = new CultureInfo(culture);
+            double? actual = NumberHelper.ConvertToDouble("59.940000");
+            Assert.Equal(59.94, actual);
+        }
+
         #endregion
 
         #region ConvertToInt64
diff --git a/SabreTools.Text.Extensions/NumberHelper.cs b/SabreTools.Text.Extensions/NumberHelper.cs
index 6f69741..a3742cf 100644
--- a/SabreTools.Text.Extensions/NumberHelper.cs
+++ b/SabreTools.Text.Extensions/NumberHelper.cs
@@ -1,4 +1,5 @@
 using System;
+using System.Globalization;
 
 namespace SabreTools.Text.Extensions
 {
@@ -47,7 +48,7 @@ namespace SabreTools.Text.Extensions
             if (string.IsNullOrEmpty(numeric))
                 return null;
 
-            if (!double.TryParse(numeric, out double doubleValue))
+            if (!double.TryParse(numeric, NumberStyles.Float | NumberStyles.AllowThousands, CultureInfo.InvariantCulture, out double doubleValue))
                 return null;
 
             return doubleValue;