[Luc]

I have looked for this myself, and come to the conclusion that it doesn't exist unless you're willing to buy a second hand, bulky hospital scale.

Measuring human weight is harder than it seems (we don't stay still).

Most scales use a strain gauge sensor that detects bending of a metal arm through changes in resistance. It's pretty noisy and needs averaging. There's some integrated circuits to relate the resistance to weight. Most do some factory calibration only around the target weights (median adult weights).

Look instead for a scale that explicitly states that it is accurate over the whole range (e.g. baby to 220lbs). Usually there's tradeoffs - e.g. the displayed weight won't 'settle down'. I have one like this and it works better than any previous one I had (tested by adding calibrated weights), but I hesitate to recommend since it's a low cost consumer model.

[ilyt]

My $10 +decade old one CR2032 powered one does that just fine.

Accurate enough for weight control (doesn't drift from day to day), no "stuck weight" problem mentioned either. Just need to wait 2 seconds for self calibration to finish

[mrguyorama]

If your scale doesn't give you a different weight from one day to the next, either you are a very unusual human that doesn't ever change weight somehow, the scale only gives two sig figs, or it's lying to you.

Humans are constantly changing weight, with every single breath you take.

[ilyt]

I eat once a day and weight myself in the morning before eating or drinking anything, hence the consistency. If I weight myself in other parts of the day I get different results so it isn't just weight stuck at same level. So I can see the trend based on what I ate last few days pretty quickly.

I also tested on small weight and what my kitchen weight calls 3.016KG my bathroom weight calls 3.0KG so I'm pretty sure it's still reasonably accurate in absolute scale.

[justsomehnguy]

> I also tested on small weight

You need to weight youself and then weight yourself again with something of known weight in your hands.

Floor scales usually aren't good at a small weights, though I wouldn't be surprised if they are not bad at it nowadays.

[rkagerer]

Even without endorsing, could you at least tell us the model?

[Luc]

Avec Maman AM05