Protractor icon

Protractor

Extension Actions

CRX ID
kpjldaeddnfokhmgdlmpdlecmobaonnj
Status
  • Live on Store
Description from extension meta

Easily measure angles in your browser window.

Image from store
Protractor
Description from store

Move the two guides around to accurately match any vertex.

Customize precision, units, colors, and more.

The protractor can be easily resized, nudged, locked, and rotated.

Code is open source on Github.

Also on Firefox: https://addons.mozilla.org/en-US/firefox/addon/protractor/

Latest reviews

Sergio Zubizarreta
Great for math exercises.
MuzComedian
This needs some shade toggle or color options I can't see protractor itself where I need to measure
Jeremiah Adegboyega (vex)
girl its not "i wish i could give 0 stars" its "i wish i could give 6 stars"
Raiheera Singh Virk
which i could give 0 stars best thing ever!
Keith
Super useful, came in very handy for a project.
STOCKER TIME
Amazing
Shorya Upadhyay
This is an awesome tool!
Mike E
Awesome tool, thank you!
Adam Weinert
Brilliant tool - would love it if it could also display mils (6400)!
Brahim Oubbad
Nice tool, thank you so much
William J. Stockich
For years and years I've searched for a tool that could measure angles. No learning curve here. Accuracy up to 4 decimal digits. Zero-angle (+ x-axis) rotatable to any angle. Click- nudge to get an angle vertex exactly over a point. Zoomable. There are other options and most are adjustable. Beyond imaginable! No improvements left for me except going outside the browsers!
progamer2 progamer2
just amazing bro
David Battaglino
Simple to use and very effiency!! I really hint it to everyone.
David Battaglino
Simple to use and very effiency!! I really hint it to everyone.
Kalamazoo Veterans
The tool seems to be very helpful. However, the numbering system on my protractor is counterclockwise and I am unable to rectify the problem [90 is 270 and vice versa]. I've tried uninstalling and reinstalling multiple times and it appears to be the default. Please help!
Kalamazoo Veterans
The tool seems to be very helpful. However, the numbering system on my protractor is counterclockwise and I am unable to rectify the problem [90 is 270 and vice versa]. I've tried uninstalling and reinstalling multiple times and it appears to be the default. Please help!
Lilly Roundare
very simple to use, if a little difficult to center exactly. but overall it helped a lot :)
Lilly Roundare
very simple to use, if a little difficult to center exactly. but overall it helped a lot :)
Hansse
It's been really helpful during my online classes
Hansse
It's been really helpful during my online classes
Martin Rosenblad
Precis vad jag behövde, mycket bra!
Tom 359
Fantastic UI design, not fiddly at all.
Tom 359
Fantastic UI design, not fiddly at all.
Sean Ryan
It is anti-clockwise. No setting to flip it. Useless.
Sean Ryan
It is anti-clockwise. No setting to flip it. Useless.
Zac D
Awesome tool, wish I could double click on a number/angle to copy it.
Zac D
Awesome tool, wish I could double click on a number/angle to copy it.
S D
just what i needed
S D
just what i needed
Jossy Sebastian
but it is not visible over some colors ,NEED IN BLACK COLOR
Jossy Sebastian
but it is not visible over some colors ,NEED IN BLACK COLOR
Jack
Doesn't ever open. Totally unusable.
Jack
Doesn't ever open. Totally unusable.
Muniba Invests
Maybe I don't know how to use it, but I click on the extension and NOTHING happens.
Andy Parsons
Great tool for measure joint angles for patients virtually! Thanks!
Andy Parsons
Great tool for measure joint angles for patients virtually! Thanks!
Steven Landman
Simple, stylish and perfect for what I needed.
Steven Landman
Simple, stylish and perfect for what I needed.
_MemoryCore_
It works :D
_MemoryCore_
It works :D
Stan I
Exactly what I wanted. Thank you!
Stan I
Exactly what I wanted. Thank you!
Crispin Dry
Really helpful for me. From my window I can see a church spire on the horizon, about 4 miles away. I took a reading with my compass (297°) then, using the protractor, I centred it on my location in Google Maps and set the line to that reading. Lo and behold the line went very close to a church marked on the map that was actually 4.14 miles away! (The church was St. Jude's in Hampstead, London. Download the protractor and you should be able to work out which street I live in!)
Crispin Dry
Really helpful for me. From my window I can see a church spire on the horizon, about 4 miles away. I took a reading with my compass (297°) then, using the protractor, I centred it on my location in Google Maps and set the line to that reading. Lo and behold the line went very close to a church marked on the map that was actually 4.14 miles away! (The church was St. Jude's in Hampstead, London. Download the protractor and you should be able to work out which street I live in!)
T_Rizzle
It is perfect. It is accurate and no bugs or unworking things on it. Perfect for geo homework.
T_Rizzle
It is perfect. It is accurate and no bugs or unworking things on it. Perfect for geo homework.
haobing zheng
this is so useful and i think it is perfect
haobing zheng
this is so useful and i think it is perfect
KY Poon
This extension is great! I would suggest to make "clockwise" rotation AND 0 degree at the North to make measurement of North bearing much easier. Thanks to the option page, I can customize that by my own. But I would suggest to make it a default option to save everybody's time.
KY Poon
This extension is great! I would suggest to make "clockwise" rotation AND 0 degree at the North to make measurement of North bearing much easier. Thanks to the option page, I can customize that by my own. But I would suggest to make it a default option to save everybody's time.