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.SGD to IDR forecast for May 2025.In the beginning at 12709 Indonesian Rupiahs. Maximum 12931, minimum 11546. The averaged exchange rate 12452. SGD to IDR forecast at the