Measure the length of the child's leg from the knees down...this length will seat the child in comfort with the feet barely brushing the floor. However, if the child grows.....You'll have to start again. Now, if you meant a chair to sit at the dining-room table etc... You'll just have to wing it like the rest of us.
The height of a chair is 10 feet.
id say about waist height =)
Industry standard height for a chair is 18 to 20 inches. The height depends on the use and function of the chair.
To measure chair height accurately, use a tape measure to determine the distance from the floor to the highest point of the seat. This measurement will give you the chair's height.
The average height of a chair is between 16 to 18 inches for adults. This is found to be the most comfortable height for a seat.
Ergonomically, the optimum height for kitchen counters is 3 feet, or 36 inches. This can vary however, as people of different heights would require different height counters.
Launch height is term used in aviation as optimum height for a release of missiles or bombs.
The recommended height for chair rail installation is typically between 30 to 36 inches from the floor. Chair rail should be placed at a height that is visually appealing and practical for protecting walls from chair backs and other furniture.
I am that height so what I do is just buy the items, and adjust the chair to fit my height.
A typical counter height chair has dimensions of approximately 36 inches in height, 18 inches in width, and 20 inches in depth.
The ideal chair height for a 30-inch table is typically around 18 inches.
The optimum height for a curtain rod is 2 to 3 inches above the frame.