[2026] 8 Free PDF Measuring Tools You Can't Miss

Do you need to measure the objects in CAD drawings, PDF blueprints or other PDF documents? Finding an appropriate PDF measuring tool saves time and eliminates manual errors.

This guide list you total 9 PDF measuring tools for Windows, Mac, and online use, 8 of them are free to use. Whether you're an architect measuring floor plans or a student working with diagrams, discover which tool fits your needs.

  Cisdem PDFMaster

A Versatile PDF Measuring Tool with the Highest Precision!

• Measure distance, perimeter, area and angle in PDF with ease.
• Change the scale when measuring a PDF, like units and precision.
• Easy and accurate measurement with just a few clicks.
• Customize measurement results’ color, opacity, stroke and even style.
• Manage your measurement records orderly, view, comment, or delete.
• Other key features: edit, annotate, sign, draw, convert, compress, protect and unlock PDF.
• Available on Windows and Mac.

Free Download macOS 11 or later Free Download Windows 10 or later
Earlier than macOS 11, click here

Top of All: The Most Precise PDF Measuring Tool

Cisdem PDFMaster is a versatile PDF editor that has a measuring tool. It helps handle digital documents and measure the drawings in a PDF easily and efficiently.

There are 4 precise PDF measuring tools provided by Cisdem PDFMaster to measure distance, perimeter, polygon area and rectangle area. Each measuring tool will give you many options to customize their appearance like color, opacity, width and style. Besides, you can comment on the measurement marks or delete the unwanted ones if needed.

Best of all, the measured results in Cisdem will be completely retained on the PDF pages when you’re done measuring. This can be greatly convenient for users who need to record large amounts of measurement data.

Other Main Features Provided in Cisdem PDFMaster

• Powerful AI features: summarize, rewrite, proofread and translate.
• Edit PDF files in PDFMaster easily like a word processor.
• Make annotations and drawings on the PDF pages.
• Batch convert PDF into/from various file formats.
• Unlock password-protected PDF files.
• Protect PDF with passwords, watermarks, digital signature and more.
• Reduce the size of PDF files in bulk.
• Manipulate PDF pages simply as you want.
• Create fillable PDF forms with various form fields provided.
• Support OCR technology.

First up, set up scaling in Cisdem Measuring Tool

Cisdem allows users to set up the scaling for accurate calibration, right after you select a tool from Measure expanded menu, click Display Settings, then you will be able to change the scale ratio as per your requirements.

You can also check the following table as a reference to calibrate:

How to Measure Distance on PDF Drawings?

1. Free download Cisdem PDF measuring tool on your Windows or Mac.
   Free Download macOS 11 or later Free Download Windows 10 or later
   Earlier than macOS 11, click here
2. Upload your PDF by clicking Open Files.
3. Go to Annotate > Measure. Select the Line tool from the right tool panel to measure the distance between two points in a PDF.
4. Make adjustments to the border color, opacity, line width, line style, etc. before measuring.
5. Click anywhere in the PDF as the start point, move the cursor to the second point and click the mouse button again.
6. Go to File > Save to complete your measurement.

How to Measure Perimeter in PDF?

1. In the Measure menu, select the Multilines tool to calculate the sum of the distances of multiple points.
2. Click to set the start point, move the mouse cursor to place the second point, third point, fourth... then double click to place the endpoint.

How to Measure Area in PDF?

1. Choose Polygon from the Measure menu.
2. Click the points of the polygon you want to measure in sequence to frame it.
3. Then you'll see the measurement results (both area and length) within the polygon.
4. (Optional) If you want to measure the area of a rectangle, you can choose Rectangle from Measure menu list, and directly drag your cursor to create a rectangle.

Also, you can check the YouTube video tutorial to measure PDF on PC.

8 Free PDF Measuring Tools You Can't Miss Out

Parts of you may prefer free PDF measuring software due to tight budget, occasional use or other reasons, if so, here are 8 best free PDF measuring tools available for you.

#1. PDF X-Change (Windows Only)

PDF X-Change is a full-featured PDF editor specifically designed for Windows. It has the capabilities of PDF viewing, converting, protecting, etc., as well as PDF measuring. 70% of its features are free to use, including annotation, measurement, bookmarking, editing texts, creating and converting PDFs, organizing pages, sharing and reviewing files, etc. But if you want to edit objects in a PDF with full control, or use advanced features like OCR, creating PDF form, you need to upgrade to its licensed version.

As for its measure feature, 3 types of measuring tool are available: distance, perimeter and area. Still, it gives users much freedom to change the format of the measurement marks on page, like color and opacity. However, only straight lines or rectilinear shapes can be measured in this program, while angle or arc shapes require the help of other tools.

How to Measure PDF Drawings on Windows?

1. Launch the program of PDF-XChange Editor on your PC.
2. Go to File tab and click Open to upload the PDF you want to measure.
3. Click Comment feature and choose one desired measuring tool.
4. Select Format to change the appearance and scale ratio of measurement trace if needed.

#2. Adobe Acrobat Reader (Windows and Mac)

If you are looking for a basic yet workable PDF measuring tool, Adobe Acrobat Reader has got you covered. 

Without downloading and paying for Adobe Acrobat, the Adobe Acrobat Reader lets users view, markup and measure PDFs for free. It is capable of taking accurate measurement of your floor plans, PDF drawings or other files, you can measure perimeter, distance and area with this free PDF measuring tool.

Step-by-Step Tutorial on Measuring PDF for Free

1. Open Adobe Acrobat Reader on your Windows or Mac.
2. Go to Menu > Open to upload your floor plan or other PDF files from your computer or Cloud.
3. Choose Measure objects from All tools on the left toolbar.
4. Click Measuring tool. On the right, select one snap type and measurement type before measuring.
5. Click to confirm the starting point and the points passed through, and double-click to end the measurement.
6. Select Properties from the right-click menu to adjust the settings.
7. Finally, go back to Menu > Save to download the PDF file you measured.

#3. PDF Annotator (Windows Only)

PDF Annotator provides Windows users two separate tools for measurement: One is Measure tool, another is Dimension tool. The Measure tool can measure the distance, perimeter, area and angle.

However, the measurement marks are displayed temporarily so that you can’t save it to the PDF. Meanwhile, the Dimension tool can only measure the distance between two points but the measurement data will be permanently retained on the document.

How to Measure PDF on Windows?

1. Upload your PDF file from your local device.
2. First select Tool > Measure to activate the measure tool, then go to Tool > Tool Styles, the options you can choose from the drop-down menu are Distance, Perimeter, Area, Angle, Scale and Manage Scales.
3. Select a scale from the list or customize the scale in Manage Sales.
4. Choose the tool to measure the distance between two points, a perimeter between points, an area or an angle in your PDF, and finish with ESC or right click.

#4. Preview (Mac Only)

There is good news for Mac users that a default image and PDF viewer -- Preview can be a handy PDF measuring tool for free. With the aid of ruler provided by Preview, users are able to measure the size and margins of rectangular selection in a PDF file without having to print it out. Even, you can manually calculate the area basing on the box data.

It is a great option for those who simply need to measure some rectangles, otherwise you’ll have to turn to a professional PDF measuring tool.

How to Use this Free PDF Measuring Tool on Mac?

1. Right click on your PDF file and open it with Preview.
2. Go to Tools tab on the top > Show Inspector from the drop-down.
3. Hit the Ruler icon in the floating window.
4. Head towards the Tools tab > Rectangular Selection, drag a rectangle as you need on the page, then its measured data will be shown on the Crop window.

#5 EasyPDFTakeoff (Windows Only)

EasyPDFTakeoff is a lightweight and free PDF measurement tool designed for Windows users who need to review, annotate, and measure PDF drawings efficiently. Besides, it allows users to annotate, sign, redact, and organize PDF files with ease.

Its measurement tools are built for accurate PDF takeoffs, users can create line, rectangle, counter, and polygon takeoff items to measure distances, areas with high precision, and in preferred settings. It is especially helpful for contractors, architects, engineers to measure floor plans, blueprints, and other technical drawings for real world projects.

How to Measure PDF Free with EasyPDFTakeoff?

1. Download and install this free PDF measuring tool on your PC.
2. Launch the program, click Create a new project.
3. Then fill in the fields to complete the project information, and go to Load PDF file to open the PDF drawing.
4. Double click on the file, activate scaling mode, then create a takeoff item to measure distance or area on your drawing.

#6 PlanForm (Windows, macOS, iOS, Android)

PlanForm is best suited for professionals who need a cross-platform tool to review and measure PDF drawings, it is available on macOS, Windows, iOS, and Android. It is designed to measure, markup, convert, organize and perform OCR on PDF drawings. The free version allows full viewing and navigation, highlighting and commenting, but not allowed to most of the markup tools. It also allows saving images as PDF and printing for free.

It has rich measurement options, including scale settings, length and area measurement. But to measure angle, radius, count or auto fill, you need to upgrade to the premium version. 

However, some users complains about its limitations, including restricted markup features in the free version, less powerful shape editing feature, and a less polished user interface compared with native apps in macOS or Windows.

How to Measure PDF Free with PlanForm?

1. Download and install PlanForm PDF measuring tool on your Mac or PC.
2. Launch the program, drag and drop the drawing to open.
3. Set up scale for your file first.
4. Then click on Measure to open up the panel, and choose a tool to measure distance or area according to your need.

#7 FoxyUtils Measure PDF (Online)

In addition to free PDF measuring software, online tools are also a good option to measure PDF for free. They eliminate downloads and work instantly on any device. FoxyUtils PDF measurement tool is the first we want to recommend.

FoxyUtils Measure PDF is a simple online PDF measurement tool that allows users to measure distances and areas directly in their browser. Also, it can insert shape, image and text into the drawings. 

Users can calibrate the PDF scale first to improve accuracy, then use measurement tools to calculate distance or area, even add results to the drawings. By signing up a free account, users can export the PDF with measurement data on it.

However, it requires stable Internet connection, and doesn’t provide advanced takeoff or professional measurement features. Even, the file is stored in the server for a while, which brings information leak risk.

How to Use Foxit PDF Measuring Tool Online?

1. Visit https://foxyutils.com/measure-pdf/ and sign up with your email address.
2. Click Add PDF to upload your PDF.
3. Go to Measure > Calibrate to set up the scaling first. Then go to Measure, choose Distances or Areas to measure.
4. Once you’ve finished, click File > Export PDF.

#8. APITemplate.io (Online)

APITemplate.io is actually an automated PDF generation service, with measurement being one of many operations. It is chosen here because of its easy and fast processing. Unlike common measuring tools, it only allows users to measure the distance between two points, and has no option to save the measured PDF. So it just works as a ruler.

How to Use this Free PDF Measuring Tool Online?

1. Type and search “APITemplate.io PDF measure tool” in a browser.
2. In the tool page, click Select PDF File to upload your PDF file.
3. Your PDF will be displayed directly below. You can adjust its size by clicking the “-” or “+” icon.
4. Click to start and end measuring the distance of two points.

Comparison Table of Best PDF Measuring Tools

Conclusion

All these 9 PDF measuring tools can measure PDF drawings with high precision, but it depends on your personal needs to pick one. Simple tools like Preview and APITemplate.io work for basic distance measurement, while professional PDF measurement software like Cisdem PDFMaster and PDF-XChange are better for complex measurements, with additional PDF editing and processing features.