Can I convert 3.7V to 5V's using 3.3v to 5v converter
No. That is a level shifter. It uses a low voltage (3.3V) to switch a separate high voltage (5V) supply to create different logic levels.

It does not convert voltage, it merely switches.

To create 5V from 3.7V you need either a boost converter (inductor based circuit) or a charge pump converter (capacitor based circuit).