At Readers.com™, measuring to find your perfect reading glasses size is different than measuring for a pair of optical glasses. If you own a pair of prescription eyewear, you may be accustomed to the three-number frame measurement format (lens-bridge-temple) listed on the inside of the temple. Those optical measurements can be used as a guide, but they are different than the measurements we’ve found are most helpful for our customers.

To get an idea of the right reading glasses size for you, we recommend taking a pair of glasses or sunglasses that you know fit your face well and measuring those for the following dimensions.

Alternately, you can use our printable ruler to measure your face from temple to temple.

How to Measure Your Readers Frames

Frame Size

The width of each of our frames is measured from hinge to hinge on the inside of the frame. Available frame sizes are:

Frame Height

The frame height measurement is taken at the tallest part of the frame front, from the bottom of the frame to the top of the frame. This measurement includes the frame on the top and bottom of the lens. Available frame heights range from very small (13-24mm) reading glasses to very large (50-75mm) reading glasses.

Temple Length

To measure temple length, place your ruler at the hinge and measure straight back to the end of the temple. The correct temple length is important because it ensures that the frame rests comfortably on and behind your ear. We’re proud to offer temple lengths ranging from short temples(110-130mm) to long temples (145-160mm).

Please note: We do not measure around the curve of the temples, and instead measure straight back to the end of the temple.

Bridge Sizes

Bridge size is important because it keeps your glasses firmly on your nose. To determine the bridge size, measure across the bridge from lens to lens at the point where the lenses sit closest to each other (where the glasses will sit on your nose). Our bridge sizes include narrow (10-19mm), average (20-21mm), and wide (22-34mm).

Frame and Face Shape

Your reading glasses are an important tool to help you see more clearly, but they should also complement your face shape so you can wear them with confidence!

The general rule of thumb is: the more round your face shape (round and oval), the more angular your frames should be; and the more angular your face shape (square and heart), the rounder the frame shape.

Square faces should avoid retro square, rectangle, or square readers and instead opt for aviator, cat eye, or round frames.

Heart-shaped faces should steer clear of round or oval frames, and migrate towards rectangle, retro square, or cat eye frames.

Oval faces have the most flexibility with frame shapes, but they tend to look best in round, rectangle, or retro square frames.

Round faces should avoid round or oval frames and look for browline, rectangle, or retro square frames.

Want to learn more about the frame and face shape dynamic? Check out our Face Shape Guide.

How Do I Know If I Need Reading Glasses?

Sometime after the age of 40, you may notice that your vision isn’t what it used to be, but you can still see relatively well. Then one day, the menus at restaurants are a bit blurry and you find yourself squinting. Your eyes feel strained at the end of the day, and you find yourself holding your phone out at an arm’s length to read your text messages. Does this sound like you?

These are some of the most common signs and symptoms that you may be developing presbyopia, the clinical term for what happens to your eyes as you age, creating the need for reading glasses.

Between the ages of 40 and 65, most people’s eyes go through a change that leads to presbyopia. The eye’s lens, which contracts and expands thanks to the help of a circular muscle, becomes less flexible and more rigid over time. This hardening of the lens prohibits the eye from contracting to focus on close-up objects, which is what causes fuzzy vision when trying to read.

Although this may sound frightening, everyone develops some degree of presbyopia during their life, and a simple visit to your eye doctor for an eye exam can confirm the diagnosis. Luckily, there are several easy fixes to correct your reading vision! The most common solution is wearing a pair of reading glasses, also referred to as “readers.” The Vision Council’s VisionWatch Report states that 26.2% of American adults aged 45-54 currently wear reading glasses — you’re not alone!

Finding Your Reading Glasses Power

If you’re going to be buying and wearing reading glasses for the first time, you’ll find the words “reading power,” “reading strength,” “reading magnification,” and “diopter” used interchangeably – they all mean the same thing. When it comes to reading powers, the lower the number, the less magnification there is in the lens. At Readers.com®, we carry powers +1.00 to +7.00, including quarter powers (+.25 increments) and half powers (+.50 increments) so you can get the reading power you need.

There are several ways to determine which reading power is right for you:

Current Eyeglass Prescription

At your annual eye exam, ask your eye doctor what reading power you need.

Power Finder

If you have a current reading glasses prescription with the “ADD” power listed, use our Power Finder Tool to determine the best reading power for you. You can also use this tool if:

• You have a pair of readers that used to work for you, but now things are a bit blurry and you believe you need a stronger power.
• Or to get an estimated reading power based on your age range.

Printable Diopter Chart

This printable chart can be used as a guideline to determine the best reading power for you. If you can see two lines equally clearly, choose the lower power. The chart goes up to a +3.25 power, so if your vision requires a stronger power, we recommend visiting an eye doctor to find your reading power.

Visit our What Reading Glasses Power Do I Need? guide to learn more.

How to Buy Reading Glasses

Beginning your search for a pair of reading glasses may seem daunting, but if you know the answers to the following questions, you’ll be able to find the perfect pair of readers in no time!

What Reading Glasses Lens Type Do I Need?

	Bifocal readers have unmagnified lenses which also contain inserts with the magnification of your choice in the lower portion of the lenses. This lens type is perfect for those who prefer to wear their readers all day, or who look from their reading to distance vision frequently.
	Fully magnified reading glasses have the magnification of your choice throughout the entire lens. This lens type works best for those who only want to wear readers when necessary.
	Computer readers are the best option for those who will be using a computer or other digital device for an extended period of time. Available in fully magnified, multifocal, or unmagnified lenses, special lens coatings, and tints help reduce eye strain.
	Headed outside? Our reading sunglasses are available with bifocal or fully magnified lenses, and will help you see clearly while protecting your eyes from the sun’s UVA/UVB rays.

What’s My Reading Glasses Style?

Knowing your personal style and the frame shape that looks best on you will help you choose the perfect pair of readers! From classic frame colors to playful patterns, very narrow to very wide widths, and any frame shape imaginable, reading glasses aren’t the one-size-fits-all glasses they used to be.

Here’s a printable ruler to help you find a style in a size that will fit you best!

Where can I buy reading glasses?

Many people will debate over the best place to buy reading glasses, and it honestly comes down to what you’re looking for in a pair of reading glasses. Over-the-counter (also called non-prescription) reading glasses are commonly found at drug stores, discount stores, and other retailers, but did you know that you can purchase reading glasses online? If you have all the info mentioned in this guide, you’re set to start shopping! Readers.com® is one of the largest online reading glasses retailers, with more than 500 unique styles! We understand it can be a little harder to buy reading glasses online, which is why we offer a simple 90-day return or exchange policy. 

About Dr. Holly Vaught, OD

Dr. Holly J. Vaught, is the eye doctor at Vaught Family Eye Care in Franklin, Indiana, where she provides comprehensive services for patients of all ages. In 2009, she graduated with honors from Indiana University School of Optometry. Her training includes the areas of diagnosis and treatment of common ocular diseases, primary care, contact lenses, and pre- and post-op care for refractive and cataract surgeries. Dr. Vaught is a member in good standing of the American Optometric Association, the Indiana Optometric Association, and Women of Vision.

Disclaimer: All references to “bifocals” herein refer to readers having unmagnified lenses containing a “bifocal style” single powered reading glass insert located in the lower portion of the lenses.

[Updated: January 2020]