diff --git a/src/locale/en.json b/src/locale/en.json
index bc48997..615aac2 100644
--- a/src/locale/en.json
+++ b/src/locale/en.json
@@ -2,27 +2,27 @@
   "appTitle": "Paper Tube Production Calculator",
   "beltSpecificationCalculate": "Belt Specification Calculate",
   "multiLayerPaperTapeWidthAngleCalculate": "MultiLayer Paper Tape Width Angle Calculate",
-  "paperCoreDiameter": "Paper Core Diameter",
-  "paperDensity": "Paper Density",
+  "paperCoreDiameter": "Paper core diameter",
+  "paperDensity": "Paper density",
   "paperGrammage": "Grammage",
-  "paperRollExternalDiameter": "Paper Roll External Diameter",
-  "paperRollLength": "Paper Roll Length",
-  "paperRollWallThickness": "Paper Roll Wall Thickness",
+  "paperRollExternalDiameter": "Paper roll external diameter",
+  "paperRollLength": "Paper roll length",
+  "paperRollWallThickness": "Paper roll wall thickness",
   "paperRollWeightLengthCalculate": "Paper Roll Weight Length Calculate",
   "paperTapeWidthAngleCalculate": "Paper Tape Width Angle Calculate",
   "paperTubeProductionCalculate": "Paper Tube Production Calculate",
   "paperTubeWeightCalculate": "Paper Tube Weight Calculate",
   "parameters": "Parameters",
-  "productionAmount": "Production Amount",
+  "productionAmount": "Production amount",
   "reset": "Reset",
   "results": "Results",
-  "singlePaperTubeWeight": "Single Paper Tube Weight",
-  "totalPaperTubeWeight": "Total Paper Tube Weight",
-  "paperRollWidth": "Paper Roll Width",
-  "paperThickness": "Paper Thickness",
-  "paperRollWeight": "Paper Roll Weight",
+  "singlePaperTubeWeight": "Single paper tube weight",
+  "totalPaperTubeWeight": "Total paper tube weight",
+  "paperRollWidth": "Paper roll width",
+  "paperThickness": "Paper thickness",
+  "paperRollWeight": "Paper roll weight",
   "paperLength": "Paper Roll Length",
-  "innerPaperWidth": "Inner Paper Width",
+  "innerPaperWidth": "Inner paper width",
   "workFrequency": "Work Frequency",
   "workTime": "Work time",
   "workEfficiency": "Work efficiency",