do Europeans need converters for the US?

All electronics these days are universal 110 to 240 VAC, 50 to 60 HZ. She will need a plug adapter.

She needs to look at the hard to read nameplate on the power “brick.” Almost certainly it says 100-240 VAC. Wouldn’t she know this about her computer?

All laptop power supplies sold for many years (at least 5, probably 10) have been dual voltage, so no voltage converter needed.
Double check that the small print on the charger (not on the laptop itself) says "110-240V".

She will need a plug adapter, which are available in "all good travel or electronics shops".

FYI--We just returned from Paris and found our easiest way to deal with tablets and cellphones is to buy an European 220 .to USB charger for 6 euros. Europeans would do well to do the same in the U.S. They are available in any Dollar General or Walmart store cheap.

A USB charger will not work for a laptop.

Kathleen,

Your daughter will need to check the "Input Voltage" specifications on the laptop charger / power supply. If the spec's state "Input 100 - 240 VAC, 50~60 Hz", then she won't have any trouble using it in the U.S. Is there any possibility you could ask her about that, and then post the answer back here?

Thanks to all for your responses! Turns out it's her camera she was concerned about, not the laptop... and she tells me she thinks it will be fine. As requested, I'll report back after our trip to family wedding in Utah and a few days in Jackson, Wyoming.

A lot of cameras are pretty old school unless she has a really recent one. It is really worth her reading carefully the information on the charger block/battery charger, unless it is very recent and uses USB to charge.

How does she charge the camera? Does it plug in directly or do you put the battery on a charger than plugs in? If directly, be sure to check the cord for a voltage conversion as noted in earlier posts. If through a separate charger, it almost for sure has a voltage conversion.

My camera is two years old and it charges through a USB connection to a computer or laptop. That should the same anywhere in the world.

Just closing the loop on this discussion. My daughter’s charger did have the notation “ 110 to 240 V” and everything went smoothly while she was in the US. Thanks to everyone for helping us to the right answer!