Major stores like Walmart and Target typically stock them in the travel or luggage sections.

A non-digital alternative that doesn't require batteries. Travel Tip: No Scale?

Many airport shops sell them, though they are usually more expensive there. Top-Rated Models

If you're in a pinch and don't have a dedicated luggage scale, you can use a standard . Simply weigh yourself first, then weigh yourself while holding the suitcase, and subtract your weight from the total. Best Luggage Scale To Help Avoid Baggage Fees - Pack Hacker

A top-rated digital scale known for its precision. FREETOO: Portable and easy to handle for heavy bags.