diff --git a/apps/backend/src/app/files/files.service.ts b/apps/backend/src/app/files/files.service.ts
index 68aa367..f567a78 100644
--- a/apps/backend/src/app/files/files.service.ts
+++ b/apps/backend/src/app/files/files.service.ts
@@ -294,7 +294,54 @@ export class FilesService {
 			.execute();
 	}
 
-	public async removeFileType() {
-		//TODO
+	/**
+	 * Removes a file type by its ID if it is not in use by any files or machines.
+	 *
+	 * @param {string} fileTypeId - The ID of the file type to be removed.
+	 * @return {Promise<object>} - A promise that resolves to the result of the deletion operation.
+	 * @throws {BadRequestException} - If the file type is in use by any files or machines.
+	 * @throws {InternalServerErrorException} - If an error occurs during the deletion process.
+	 */
+	public async removeFileType(fileTypeId: string): Promise<object> {
+		const fileUsingFileType = await this.database
+			.use()
+			.select()
+			.from(FilesTable)
+			.where(eq(FilesTable.fileType, fileTypeId))
+			.prepare("checkFileTypeInUseInFiles")
+			.execute();
+
+		if (fileUsingFileType.length > 0) {
+			throw new BadRequestException(
+				"This file type is in use by some files and cannot be deleted.",
+			);
+		}
+		const machinesUsingFileType = await this.database
+			.use()
+			.select()
+			.from(FilesTypeForMachine)
+			.where(eq(FilesTypeForMachine.fileTypeId, fileTypeId))
+			.prepare("getMachineByFileTypeId")
+			.execute();
+
+		if (machinesUsingFileType.length > 0) {
+			throw new BadRequestException(
+				"This file type is in use by some machines and cannot be deleted until there is no machine using this fileType.",
+			);
+		}
+
+		try {
+			return await this.database
+				.use()
+				.delete(FilesTypesTable)
+				.where(eq(FilesTypesTable.id, fileTypeId))
+				.returning()
+				.prepare("deleteFileTypeById")
+				.execute();
+		} catch (e) {
+			throw new InternalServerErrorException(
+				"An error occurred while deleting a file type",
+			);
+		}
 	}
 }