Simply enrol into the Frequent Flyer Conversion Programme. Your UNI$ will be converted automatically or on demand to KrisFlyer Miles or Asia Miles based on your subscribed programme.
If you are holding a KrisFlyer UOB Credit Card, please do not enroll for Singapore Airlines Krisflyer auto-conversion or one-time conversion. The earned miles will be credited into your KrisFlyer account directly. Please visit here for more info.