Systems and methods for predictive conversion of user text input in one language or character set to another language or character set are disclosed. The method may generally include converting a partial user input in a non-target language or character set to a converted partial user input in a target language or character set and computing likely possible converted completions of the converted partial user input based on a likely completions module. The converting may be based on a dictionary of non-target language or character set to target language or character set mappings. The likely completions module may be a database or a model trained by performing statistical analysis on a database of user inputs or a subset thereof. The subset of user inputs may be selected from those from a particular geographic location or time period and/or from the user or the user's current session.