Are portable luggage scales accurate enough to avoid airline overweight fees?

Most handheld digital luggage scales in this category claim accuracy within roughly 0.1 lb and a 110 lb (50 kg) capacity, which is sufficient to stay under typical airline checked-bag limits. Because airline scales and home scales can differ slightly, buyers commonly weigh with a buffer of a pound or two below the limit rather than trusting the readout to the exact ounce.