If you are looking an online translator, well that's all you can get I think. Personally, i never trust online translator to translate my script or writing. It will never be precise. For single word, yes it is accurate. But for sentences or phrases, never use online translator. I suggest that you use the printed dictionary. So far, i use the one by: John M.Echols and Hassan Shadily, published by PT Gramedia Jakarta, Many academics refer to this dictionary because it's the best we can find here.

Ja du hast recht.. Es wäre besser, wenn du ein Wörterbuch indonesisch bei playstore herunterlädst :)