diff --git a/Common/UnitDefinitions/Volume.json b/Common/UnitDefinitions/Volume.json
index e5ab2458ae..270d3d2275 100644
--- a/Common/UnitDefinitions/Volume.json
+++ b/Common/UnitDefinitions/Volume.json
@@ -194,8 +194,8 @@
     {
       "SingularName": "CubicInch",
       "PluralName": "CubicInches",
-      "FromUnitToBaseFunc": "{x} * 1.6387 * 1e-5",
-      "FromBaseToUnitFunc": "{x} / (1.6387 * 1e-5)",
+      "FromUnitToBaseFunc": "{x} * 1.6387064e-5",
+      "FromBaseToUnitFunc": "{x} / 1.6387064e-5",
       "Localization": [
         {
           "Culture": "en-US",
diff --git a/UnitsNet.NanoFramework/GeneratedCode/Quantities/Volume.g.cs b/UnitsNet.NanoFramework/GeneratedCode/Quantities/Volume.g.cs
index 294afc745e..ef7d866445 100644
--- a/UnitsNet.NanoFramework/GeneratedCode/Quantities/Volume.g.cs
+++ b/UnitsNet.NanoFramework/GeneratedCode/Quantities/Volume.g.cs
@@ -725,7 +725,7 @@ private double GetValueInBaseUnit()
                         VolumeUnit.CubicDecimeter => _value / 1e3,
                         VolumeUnit.CubicFoot => _value * 2.8316846592e-2,
                         VolumeUnit.CubicHectometer => _value * 1e6,
-                        VolumeUnit.CubicInch => _value * 1.6387 * 1e-5,
+                        VolumeUnit.CubicInch => _value * 1.6387064e-5,
                         VolumeUnit.CubicKilometer => _value * 1e9,
                         VolumeUnit.CubicMeter => _value,
                         VolumeUnit.CubicMicrometer => _value / 1e18,
@@ -792,7 +792,7 @@ private double GetValueAs(VolumeUnit unit)
                         VolumeUnit.CubicDecimeter => baseUnitValue * 1e3,
                         VolumeUnit.CubicFoot => baseUnitValue / 2.8316846592e-2,
                         VolumeUnit.CubicHectometer => baseUnitValue / 1e6,
-                        VolumeUnit.CubicInch => baseUnitValue / (1.6387 * 1e-5),
+                        VolumeUnit.CubicInch => baseUnitValue / 1.6387064e-5,
                         VolumeUnit.CubicKilometer => baseUnitValue / 1e9,
                         VolumeUnit.CubicMeter => baseUnitValue,
                         VolumeUnit.CubicMicrometer => baseUnitValue * 1e18,
diff --git a/UnitsNet.Tests/CustomCode/VolumeTests.cs b/UnitsNet.Tests/CustomCode/VolumeTests.cs
index 17cb52f922..a362f21978 100644
--- a/UnitsNet.Tests/CustomCode/VolumeTests.cs
+++ b/UnitsNet.Tests/CustomCode/VolumeTests.cs
@@ -17,7 +17,7 @@ public class VolumeTests : VolumeTestsBase
 
         protected override double CubicFeetInOneCubicMeter => 35.314666721488590250438010354003;
 
-        protected override double CubicInchesInOneCubicMeter => 61023.98242;
+        protected override double CubicInchesInOneCubicMeter => 61_023.744094732283952756881891717;
 
         protected override double CubicKilometersInOneCubicMeter => 1E-9;
 
diff --git a/UnitsNet/GeneratedCode/Quantities/Volume.g.cs b/UnitsNet/GeneratedCode/Quantities/Volume.g.cs
index df86322da8..2815bdde9d 100644
--- a/UnitsNet/GeneratedCode/Quantities/Volume.g.cs
+++ b/UnitsNet/GeneratedCode/Quantities/Volume.g.cs
@@ -1682,7 +1682,7 @@ private bool TryToUnit(VolumeUnit unit, [NotNullWhen(true)] out Volume? converte
                 (VolumeUnit.CubicDecimeter, VolumeUnit.CubicMeter) => new Volume(_value / 1e3, VolumeUnit.CubicMeter),
                 (VolumeUnit.CubicFoot, VolumeUnit.CubicMeter) => new Volume(_value * 2.8316846592e-2, VolumeUnit.CubicMeter),
                 (VolumeUnit.CubicHectometer, VolumeUnit.CubicMeter) => new Volume(_value * 1e6, VolumeUnit.CubicMeter),
-                (VolumeUnit.CubicInch, VolumeUnit.CubicMeter) => new Volume(_value * 1.6387 * 1e-5, VolumeUnit.CubicMeter),
+                (VolumeUnit.CubicInch, VolumeUnit.CubicMeter) => new Volume(_value * 1.6387064e-5, VolumeUnit.CubicMeter),
                 (VolumeUnit.CubicKilometer, VolumeUnit.CubicMeter) => new Volume(_value * 1e9, VolumeUnit.CubicMeter),
                 (VolumeUnit.CubicMicrometer, VolumeUnit.CubicMeter) => new Volume(_value / 1e18, VolumeUnit.CubicMeter),
                 (VolumeUnit.CubicMile, VolumeUnit.CubicMeter) => new Volume(_value * 4.16818182544058e9, VolumeUnit.CubicMeter),
@@ -1737,7 +1737,7 @@ private bool TryToUnit(VolumeUnit unit, [NotNullWhen(true)] out Volume? converte
                 (VolumeUnit.CubicMeter, VolumeUnit.CubicDecimeter) => new Volume(_value * 1e3, VolumeUnit.CubicDecimeter),
                 (VolumeUnit.CubicMeter, VolumeUnit.CubicFoot) => new Volume(_value / 2.8316846592e-2, VolumeUnit.CubicFoot),
                 (VolumeUnit.CubicMeter, VolumeUnit.CubicHectometer) => new Volume(_value / 1e6, VolumeUnit.CubicHectometer),
-                (VolumeUnit.CubicMeter, VolumeUnit.CubicInch) => new Volume(_value / (1.6387 * 1e-5), VolumeUnit.CubicInch),
+                (VolumeUnit.CubicMeter, VolumeUnit.CubicInch) => new Volume(_value / 1.6387064e-5, VolumeUnit.CubicInch),
                 (VolumeUnit.CubicMeter, VolumeUnit.CubicKilometer) => new Volume(_value / 1e9, VolumeUnit.CubicKilometer),
                 (VolumeUnit.CubicMeter, VolumeUnit.CubicMicrometer) => new Volume(_value * 1e18, VolumeUnit.CubicMicrometer),
                 (VolumeUnit.CubicMeter, VolumeUnit.CubicMile) => new Volume(_value / 4.16818182544058e9, VolumeUnit.CubicMile),