Is it possible to convert an American plug to European without purchasing an adapter? Can it be done by rewiring the plug ourselves?

Yes, you can convert an American plug to a European one by rewiring, but it’s not recommended unless you’re skilled in electrical work. You’d need to replace the plug with a European-compatible one, ensuring proper wiring (live, neutral, and ground) matches the European standard. Voltage compatibility (110-120V vs. 220-240V) must also be confirmed to avoid damaging the device. For safety and convenience, an adapter or professional help is usually better.