Since size is a crucial element in space planning and interior decoration, it is of utmost importance that you are able to take proper measurements before buying bar stools to ensure that you don't end up with a crowded looking bar or stools that are too high for counter.

Some useful measurement tips include:

1. Measure the height of your bar counter. A typical bar measures about 40 to 42 inches high. For this, you will need stools with seat height of 24 to 26 inches. For shorter bars measuring 35 to 36 inches tall, buy stools that stand 24 to 26 inches high.
   
   
2. Make sure there is ample space between the bar stools and other bar furniture. Measuring from the center point of a bar stool to another, there should be at least 30 inches of space in between. Bar stools with armrests may need a little more space.
   
   
3. Have 10 to 13 inches of space between the stool and the bottom of the counter or bar to provide enough room to comfortably sit or swivel the seat around.
   

The material of the stools is very essential because this is a major determinant of the quality of the furniture. Most bar stools are made of metal and wood bases, protected with durable fabric like vinyl, leather or micro fiber, which are excellent shields against food and beverage spills.

Each kind of material has its own pros and cons. For instance, stools with leather material require more complicated cleaning methods and special care products while plastic bar stools can easily be wiped clean with a piece of damp cloth. Looking at the other side, leather seats look a lot more elegant than plastic ones.

Next, you have to determine what kind of features you want your bar stools to have. Some of the most common features include backrests, armrests, footrests, swivel seats and adjustable seats.

You may opt for a single feature or a combination. Just make sure that your bar stools have uniform features. Having one bar stool with an armrest and another one beside it with none is not a pretty sight.

To make it easier for you to choose, put yourself in the shoes of a customer and determine which of these will add comfort and enjoyment to your stay in the bar.

Just like with any other bar furniture, it is imperative that you choose bar stools that will echo the personality of your bar. Classic wooden stools for instance will definitely look out of place in a modern styled bar.

Some examples of styles and kinds of stools that go well with them:

1. Wooden bar stools complement traditional and classic styles.
   
   
2. Stools made of metal and leather are more apt for contemporary bars.
   
   
3. Rustic looking stools will blend beautifully with a country styled bar.
   
   
4. Free-spirited prints and upbeat colors on stools are a perfect match to a bar with an eclectic theme.
   

Determine the number of pieces of seating you want to have inside your bar.

The measurements you have taken previously will give you an idea on how many stools will fit into your establishment while still leaving ample space to move and walk around.

You may be spending a few dollars more for high quality furniture.

However, in the long run, you will be saving even more with this move because good quality furniture requires less maintenance and are less likely to break apart than cheap and low quality furniture.