What is the right height for a kitchen chair?

you just need to ask the seller about this question

The repairman for our vendor figured out, as he was about to replace some mechanisms so our Boss B9431 chairs would tilt, that they were not broken! While flipping down the paddle on the left can lock the chair in a particular angle, once you've tilted it, it will not tilt IF the height adjustment lever on the right is PUSHED IN towards the chair, locking out the capability of tilting. You have to gently pull the height lever away from the chair, sliding 0.5 or 0.7 inches, to activate the tilt ability. This may be the case with other models, or may not.

The product dimensions are as follows: width - 48cm, depth - 49cm, and height - 79cm.

There are a few factors the go in to determining the properheight for a kitchen chair. Dining roomtables tend to be about 30 inches tall. Therefore, you don't want your chairs to be more than 18.5 to 20 incheshigh.

I went to the site for this product, and from what I can see from the pictures posted there,
1. You keep the base of the seat strapped into the kitchen chair,
2. You remove the cloth/padded liner that you would use for a baby,
3. You adjust the angle of the inner seat so the toddler will be sitting in an upright position, and
4. You remove the tray and push the chair up to the table.
This should make the high chair the right height so the toddler can eat from a dish placed on the table.

I hope this helped you!