BMI

Body weight divided by height squared. It is a ratio calculated from two numbers, not something a device measures.

It is the body number your doctor already has and the one nearly every population study is built on, which makes it the common language even where it describes you poorly.

It cannot tell muscle from fat, so a lean muscular person can read overweight and a sedentary person carrying little muscle can read normal. Read it next to body fat percentage, which answers the question BMI is usually being asked.

Worth mentioning a steady climb across years rather than any single value.