Background : Zoom %

Protractor colorColor : Rotate : °
Protractor radius :
Move protractor :

Developed for the Yahoo! Widget Engine, Protractor is a small widget that provides you with a simple tool for measuring angles and circles, directly from your desktop. It can be used by math. Protractor for measuring Angles. Camera view with Pause button. Measure angle between two markers. Horizontal and vertical plumb lines (Tap to snap nearest marker to line, double tap to track, tap again to release). CAL button to calibrate Accelerometer if plumb lines are out. Find song used in mp4.

Printable Protractor

This is a transparent online protractor, also helps you measure angles in a picture, you can easily measure the angle of any object around you, taking a picture and uploading it, then dragging the midpoint of the protractor to the vertex of the angle.

How to use this online protractor ?

You can measure the angle of any actual object directly on your screen
If you want to move the protractor, drag the midpoint of it.
You can rotate the protractor just like the traditional protactor
Click the edge outside of the protractor will add a pushpin on it
Placing two pushpins will show the degrees of that angle
Double-click on the pushpin will remove it
These actions can also be done in the buttons inside the control panel
The protractor can zoom in, zoom out and move the position
The background can be zoomed in and out
You can download your design and share to others
Mobile browsers don't support drag action, just use buttons

Best Free Protractor App

Every time I want to measure the angle, I always can't find the protractor.Fortunately, here is an online protractor that is convenient and practical.Now, we can use laptops, computers, tablets or smart phones to measure the angle of anything, around us anytime, anywhere.

If you want to measure something that is small, just place it on the screen and measure it directly;If you want to measure something bigger, you can take a picture and upload it, then move the center point of the protractor to measure its angle.

Use camera or image to measure angle

You can take picture of any object that you would like to measure, for example, a car, road, house, stairs or a mountain,the protractor is transparent, after you uploaded the image, it will be display in the background.then, you can drog the protractor or add pushpins to figure out the degrees of angles,upload file only accept image file in formats of jpg, gif, png, svg, webp.

In the control panel, if the background color is close to the protractor, and it's not easy to distinguish, you can change a protractor color to see it clearly.Also you can move it, shrink or enlarge the size of protractor,according to your needs.

Angles and Degrees

Angles are measured in degrees, the symbol for degrees is a little circle °
The full circle is 360° (360 degrees)
A half circle or a straight angle is 180°(180 degrees)
A quarter circle or a right angle is 90°(90 degrees)

$Free$

How to measure an angle with a protractor

Place the midpoint of the protractor on the vertex of the angle.
Line up one side of the angle with the zero line of the protractor (where you see the number 0).
Read the degrees where the other side crosses the number scale.
Take care to read from the right set of numbers.
A protractor has two sets of numbers: one set goes from 0 to 180, the other set from 180 to 0.
Which one you read depends on how you place the protractor:
place it so that one side of the angle lines up with one of the zeros, and read that set of numbers.

What do you think of this protractor ?

Thanks for your comments, I saw some people want to rotate it, so i added this feature, thank you all for your support, sharing and enjoy to use it. Sims 4 kids puberty mod.

Translate into your native language

We hope to provide a more user-friendly experience,are you willing to offer a native language version for your country ? We are looking for volunteer to improve the content in your native language, if you are interested to help this, please visit this translation page.Below are some other language version.

Online rulers

Online ruler : The most accurate size ruler on the web.
Metric scale ruler : variable scale ruler with metric units(cm, m, km)
Imperial scale ruler : variable scale ruler with imperial units(in, ft, yd, mi)

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