I had literally never thought about it and picked a scale off Amazon. Went to use it and found the same thing. Wayyyy too narrow.

Found this one and any time it’s time to replace I reorder it.

https://www.amazon.com/gp/aw/d/B0032TNPOE/ref=ppx_yo_mob_b_inactive_ship_o0_img?ie=UTF8&psc=1

EDIT - oh I just realized it goes to 440

I’ve never tried this one personally but it’s the same brand , same width (15”) and goes to 550.

https://www.amazon.com/gp/aw/d/B01ATYK3M6/ref=psdcmw_344746011_t1_B0032TNPOE

I bought this one in 2012 and it's been great! It's a little big...my husband was 425 lbs so we needed one that would register his weight too, but it's been very accurate (and has lasted 6 years so far!). https://www.amazon.com/gp/product/B0032TNPOE/ref=oh_aui_search_detailpage?ie=UTF8&psc=1