sgd to idr1 SGD = 12,676.7785 IDR Exchange rates may vary. Fees may apply. Singapore Dollars to Indonesian Rupiahs: exchange rates SGD. IDR. 1 SGD, 12,628.63 IDR.SGDIDR Exchange Rate One Year ago: 11861.1373: Change in Last Full Year: +6.59% Singapore Dollar to Indonesian Rupiah currency exchange FAQs