diff --git a/src/main/java/fr/iut_fbleau/but3/dev62/mylibrary/book/converter/BookConverter.java b/src/main/java/fr/iut_fbleau/but3/dev62/mylibrary/book/converter/BookConverter.java
index 6761041..e3b9f97 100644
--- a/src/main/java/fr/iut_fbleau/but3/dev62/mylibrary/book/converter/BookConverter.java
+++ b/src/main/java/fr/iut_fbleau/but3/dev62/mylibrary/book/converter/BookConverter.java
@@ -4,6 +4,7 @@ package fr.iut_fbleau.but3.dev62.mylibrary.book.converter;
 import fr.iut_fbleau.but3.dev62.mylibrary.book.BookDTO;
 import fr.iut_fbleau.but3.dev62.mylibrary.book.BookDetails;
 import fr.iut_fbleau.but3.dev62.mylibrary.book.BookInfo;
+import fr.iut_fbleau.but3.dev62.mylibrary.book.entity.Book;
 
 public final class BookConverter {
     private BookConverter(){}
@@ -22,4 +23,19 @@ public final class BookConverter {
                 .language(bookdetails.getLanguage())
                 .build();
     }
+
+    public static BookDTO ToDTO(Book book){
+        return BookDTO.builder()
+                .isbn(book.getIsbn())
+                .title(book.getTitle())
+                .author(book.getAuthor())
+                .editor(book.getEditor())
+                .date(book.getDate())
+                .price(book.getPrice())
+                .stock(book.getStock())
+                .categories(book.getCategories())
+                .description(book.getDescription())
+                .language(book.getLanguage())
+                .build();
+    }
 }
diff --git a/src/test/java/fr/iut_fbleau/but3/dev62/mylibrary/book/converter/BookConverterTest.java b/src/test/java/fr/iut_fbleau/but3/dev62/mylibrary/book/converter/BookConverterTest.java
index db8f38a..3b3231b 100644
--- a/src/test/java/fr/iut_fbleau/but3/dev62/mylibrary/book/converter/BookConverterTest.java
+++ b/src/test/java/fr/iut_fbleau/but3/dev62/mylibrary/book/converter/BookConverterTest.java
@@ -45,28 +45,42 @@ public class BookConverterTest {
             assertEquals(bookdetails.getLanguage(), result.getLanguage());
         }
     }
-/*
+
     @Nested
     @DisplayName("toDTO() method tests")
     class ToDTOTests {
-        LocalDate date = LocalDate.of(2026, 3, 24);
-        ArrayList<String> categories = new ArrayList<>();
-        categories.add("Thriller");
-        categories.add("Biographie");
-        Book book = Book.builder()
-                .isbn("1234567891012")
-                .title("La vie de Maxime")
-                .author("Marvin Aubert")
-                .editor("Kioon")
-                .date(date)
-                .price()
-                .stock()
-                .categories(categories)
-                .Description()
-                .language()
-                .build();
 
-        BookDTO result = BookConvert.ToDTO(book);
+        @Test
+        void ShouldConvertBookToDTO() {
+            LocalDate date = LocalDate.of(2026, 3, 24);
+            ArrayList<String> categories = new ArrayList<>();
+            categories.add("Thriller");
+            categories.add("Biographie");
+            Book book = Book.builder()
+                    .isbn("1234567891012")
+                    .title("La vie de Maxime")
+                    .author("Marvin Aubert")
+                    .editor("Kioon")
+                    .date(date)
+                    .price(12.99)
+                    .stock(50)
+                    .categories(categories)
+                    .description("C'était un brave partit trop tôt")
+                    .language("Français")
+                    .build();
 
-    }*/
+            BookDTO result = BookConverter.ToDTO(book);
+
+            assertEquals(book.getIsbn(), result.getIsbn());
+            assertEquals(book.getTitle(), result.getTitle());
+            assertEquals(book.getAuthor(), result.getAuthor());
+            assertEquals(book.getEditor(), result.getEditor());
+            assertEquals(book.getDate(), result.getDate());
+            assertEquals(book.getPrice(), result.getPrice());
+            assertEquals(book.getStock(), result.getStock());
+            assertEquals(book.getCategories(), result.getCategories());
+            assertEquals(book.getDescription(), result.getDescription());
+            assertEquals(book.getLanguage(), result.getLanguage());
+        }
+    }
 }