The purpose of this study is to describe the transformation of Javanese traditional household appliances in the industrial era, and to describe the conservation efforts of the Javanese traditional household appliances lexicon which is threatened with extinction due to technological transformation. The research data consists of a lexicon of traditional Javanese household appliances that have undergone a transformation in Javanese society in the regencies of Klaten, Boyolali, and Semarang obtained from interviews, observations, and literature review. The results of the study show that the transformation of traditional household appliances in modern Javanese society cannot be separated from the times and has experienced a language shift from Javanese to a foreign language, especially English. Some traditional Javanese household appliances that have been transformed into modern household appliances are classified based on whether traditional tools are still used by the community today. Conservation efforts that can be done to preserve traditional household appliances in era 5.0 include: documenting the names of traditional Javanese household appliances and distributing them to the wider community through articles; preservation of the physical visual form of the utensil, through pictures, replicas of traditional utensils, displays of traditional household utensils in strategic public places for individuals, communities, or official institutions. Penelitian ini bertujuan mendeskripsikan transformasi peralatan rumah tangga tradisional masyarakat Jawa di era industri, dan memaparkan upaya konservasi leksikon peralatan rumah tangga tradisional masyarakat Jawa yang terancam punah karena transformasi teknologi. Data penelitian terdiri atas leksikon peralatan rumah tangga tradisional Jawa yang mengalami transformasi pada masyarakat Jawa di Kabupaten Klaten, Boyolali, dan Semarang. Data pelenilitian diperoleh dari hasil wawancara, observasi, dan kajian pustaka. Hasil penelitian menunjukkan bentuk transformasi peralatan rumah tangga tradisional masyarakat Jawa modern tidak terlepas dari perkembangan zaman dan mengalami pergeseran bahasa dari bahasa Jawa ke bahasa asing utamanya bahasa Inggris. Beberapa alat rumah tangga tradisional Jawa yang bertransformasi menjadi alat rumah tangga modern diklasifikasikan berdasar masih tidaknya perkakas tradisonal dipergunakan oleh masyarakat hingga saat ini. Upaya konservasi yang bisa dilakukan untuk melestarikan peralatan rumah tangga tradisional di era 5.0 diantaranya: mendokumentasi nama peralatan rumah tangga tradisional Jawa dan menyebarkannya ke masyarakat luas melalui artikel; pelestarian bentuk visual secara fisik dari perkakas tersebut, melalui gambar, replika peralatan tradisional, displai peralatan rumah tangga tradisional di tempat umum yang strategis secara pribadi, komunitas, atau lembaga resmi.