Best Protractors of 2026
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Protractors are essential tools for anyone who needs to measure angles with precision. They are commonly used in mathematics, engineering, and drafting. Protractors come in different shapes and sizes, but they all have a common purpose: to measure angles accurately. Some protractors have additional features like rulers or spirit levels, making them even more versatile. Whether you are a student, a professional, or a hobbyist, a protractor is a must-have tool in your collection of office products.
At a Glance: Our Top Picks
Top 10 Protractors
Helix Angle and Circle Maker
The Helix Circle Maker is a versatile measuring tool that combines the functions of a protractor and compass. With its beveled edges, slot guides, and rotating inside disk, it allows you to easily measure angles and draw perfect circles. The included circle stencils provide additional convenience and precision. Whether you're a teacher, student, engineer, or designer, this tool is a must-have in your arsenal. It measures in both inches and degrees, making it suitable for a wide range of applications. The Helix Circle Maker is a reliable and functional tool that will greatly assist you in your measuring and drawing tasks.
Helix Swing Arm Protractor, 180 Degree, 6 Inch
The Helix Swing Arm Protractor is a translucent protractor that rotates 180° and has easy-to-read inch and centimeter marks. It also includes a 6" & 10cm ruler integrated at the bottom. Made of shatter-resistant material, the protractor has beveled edges for easy lift and manipulation. This protractor is ideal for ages eight and up and comes in assorted colors (Blue, Teal, & Grey).
Student Geometry Math Set with Drawing Compass and Protractor
This Student Geometry Math Set comes with a drawing compass and a 6-inch clear swing arm protractor with a range of 0 to 180 degrees. The compass is stored in a clear box and comes with 1 piece of geometry compass and 1 box refill, making it easy to organize and carry. The protractor is made of plastic with clear inch and centimeter marks up to 6 inches and 10 cm respectively. Additionally, the clear color of the protractor allows for easy reading of words, letters, and figures on the page.
Sparco Plastic Protractor, 6-Inch Clear Ruler Base
This professional protractor features an open center and an accurate 6-inch ruler across the base. The sharply defined raised graduations are black-bonded in crystal-clear plastic that allows you to easily read and measure angles. Made of durable plastic material, this clear-colored protractor is perfect for students, teachers, architects, and engineers.
EBOOT Plastic Protractor 180 Degrees, 6 Inch, Clear, Pack of 2
The EBOOT Plastic Protractor is a set of two 6-inch protractors that are perfect for geometry drawing and math classes. With a measuring range of 0 to 180 degrees, these protractors make it easy to measure angles and lengths quickly. The inch and centimeter marks on the protractor further enhance its usability. Made of clear plastic with a hollow center, these protractors are easy to grip and carry in your bag or pencil case. Whether you need them for painting, measuring, or technical drawing, these ruler protractors are suitable for a wide range of applications. You can even share them with your friends and classmates.
HZMM 12-Inch Transparent Plastic Goniometer
The HZMM Plastic Goniometer is a handy tool designed to help you accurately measure the range of motion in your joints, making it perfect for physical therapy at home or for professionals. Its clear 360-degree markings allow you to take precise angle readings, ensuring you track your progress effectively. Made from lightweight, transparent plastic, it’s easy to carry and use, letting you see the area you’re measuring without obstruction. The foldable design adds convenience, making it simple to store or bring with you, whether you’re a therapist or recovering from surgery.
Westcott W-8 Engineers’ Protractor Ruler
The Westcott Protractor Ruler is a versatile tool that combines the functions of a protractor and a ruler. With its easy-to-read markings, you can accurately measure angles and distances in centimeters and tenths of an inch. The durable laminated exterior ensures that this ruler will last for a long time, making it a great addition to any office, home, or classroom. Its translucent design allows you to easily see the page beneath, making it convenient for precise measurements. Crafted with premium quality materials, this Westcott Protractor Ruler is perfect for students and professionals alike.
Lifefficient Military Protractor
The Lifefficient Military Protractor is built with durability in mind, using thicker and stronger materials that won’t easily bend or wear out, giving you a reliable tool for tough outdoor use. It comes with multiple map scales, so you can accurately measure distances on various maps, from 1:10,000 to 1:250,000, making navigation easier. For precise angle measurements, it features an inner scale marked in degrees and an outer scale in mils, useful for professional land navigation. Plus, it meets military standards, matching the quality of the Army’s standard issue protractor, ensuring you have a trusted and accurate tool in your hands.
Hoiny 10-Pack 6-Inch Clear Protractors
The Hoiny Clear Protractors Pack offers you ten durable 6-inch protractors made from thick plastic, ensuring they last through many uses while feeling safe to handle thanks to smooth edges. You can easily measure angles from 0 to 180 degrees in either direction, which is perfect for precise geometry work. The dual-scale markings in both inches and centimeters help you measure lengths and angles clearly. Thanks to their transparent design, you can see the paper underneath, making it easier to align and read your work. Plus, a small hole at the bottom helps you draw and read measurements more conveniently.
Unjoo Plastic 6-Inch 180° Protractor, Pack of 2
The Unjoo 6-Inch Protractor is designed with a clear, transparent body that lets you see the paper beneath, making it easier to align your measurements accurately. It features degree markings on both sides, allowing you to measure angles precisely from 1 to 180 degrees, which is perfect for various geometry tasks. The protractor also includes a small center hole that helps you draw angles with ease. Additionally, it has both inch and centimeter scales, so you can measure length and angles quickly without switching tools. This makes it a handy and versatile tool for students and professionals alike.
Frequently Asked Questions (FAQs)
1. What are the two types of protractors?
There are two types of protractors: semicircular and circular. The semicircular protractor measures angles from 0 to 180 degrees, while the circular protractor can measure angles from 0 to 360 degrees (a full turn).
2. Are protractors still used in school?
Yes, protractors are still used in schools. They are required tools for students in grades 4-7 and are allowed but not required in grade 8 and high school. Protractors are commonly used to measure and draw angles in math and geometry classes.
3. What do we use protractor for?
Protractors are handy tools used to measure and draw angles. The most popular types are the semicircular and circular protractors. They have two sets of numbers, ranging from 0° to 180° and 180° to 0°, allowing for accurate angle measurements and drawings.
4. What grade do students start using protractors?
Students typically start using protractors in the 4th grade. At this stage, they begin learning about different types of angles and advance to measuring angles using tools like a protractor.
5. Are protractors allowed on the AMC?
Yes, protractors are allowed on the AMC (American Mathematics Competitions) test. Along with other tools like rulers, compasses, and erasers, protractors can be used during the test. However, calculators are not required, and figures in the test may not necessarily be drawn to scale.
During our protractor research, we found 24 protractor products and shortlisted 10 quality products. We collected and analyzed 94,339 customer reviews through our big data system to write the protractors list. We found that most customers choose protractors with an average price of $5.77.
The protractors are available for purchase. We have researched hundreds of brands and picked the top brands of protractors, including Helix, Maped, EBOOT, Sparco, HZMM. The seller of top 1 product has received honest feedback from 98 consumers with an average rating of 4.9.
Rebecca Cantu grew up in a family-owned retail store for home and kitchen products. She worked online and gave assistance to people to buy ideal products for their sweet home after graduating from Northwestern University with a marketing degree. She has been writing content for online shopping guides since 2011 with her professional knowledge and natural sensitivity of appliances.