sgd to idrThe SGDIDR rate is up +7.32% in the last six months. This means the Singapore Dollar has increased in value compared to the Indonesian Rupiah. Singapore Dollar to Indonesian1 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.