Add Formulas and Calculations in PDFs For Free

Drop document here to upload
Select from device
Up to 100 MB for PDF and up to 25 MB for DOC, DOCX, RTF, PPT, PPTX, JPEG, PNG, JFIF, XLS, XLSX or TXT
0
Forms filled
0
Forms signed
0
Forms sent
Last updated on Sep 19, 2025

Discover the simplicity of processing PDFs online

Card illustration
Upload your document in seconds
Card illustration
Fill out, edit, or eSign your PDF hassle-free
Card illustration
Download, export, or share your edited file instantly
Top-rated PDF software recognized for its ease of use, powerful features, and impeccable support
Users Most Likely To Recommend - Summer 2025
Grid Leader in Small-Business - Summer 2025
High Performer - Summer 2025
Regional Leader - Summer 2025
Easiest To Do Business With - Summer 2025
Best Meets Requirements- Summer 2025

Every PDF tool you need to get documents
done paper-free

Card illustration

Create & edit PDFs

Generate new PDFs from scratch or transform existing documents into reusable templates. Type anywhere on a PDF, rewrite original PDF content, insert images or graphics, redact sensitive details, and highlight important information using an intuitive online editor.
Card illustration

Fill out & sign PDF forms

Say goodbye to error-prone manual hassles. Complete any PDF document electronically – even while on the go. Pre-fill multiple PDFs simultaneously or extract responses from completed forms with ease.
Card illustration

Organize & convert PDFs

Add, remove, or rearrange pages inside your PDFs in seconds. Create new documents by merging or splitting PDFs. Instantly convert edited files to various formats when you download or export them.
Card illustration

Collect data and approvals

Transform static documents into interactive fillable forms by dragging and dropping various types of fillable fields on your PDFs. Publish these forms on websites or share them via a direct link to capture data, collect signatures, and request payments.
Card illustration

Export documents with ease

Share, email, print, fax, or download edited documents in just a few clicks. Quickly export and import documents from popular cloud storage services like Google Drive, Box, and Dropbox.
Card illustration

Store documents safely

Store an unlimited number of documents and templates securely in the cloud and access them from any location or device. Add an extra level of protection to documents by locking them with a password, placing them in encrypted folders, or requesting user authentication.

Customer trust by the numbers

64M+
users worldwide
4.6/5
average user rating
4M
PDFs edited per month
9 min
average to create and edit a PDF
Join 64+ million people using paperless workflows to drive productivity and cut costs

Why choose our PDF solution?

Cloud-native PDF editor

Access powerful PDF tools, as well as your documents and templates, from anywhere. No installation needed.

Top-rated for ease of use

Create, edit, and fill out PDF documents faster with an intuitive UI that only takes minutes to master.

Industry-leading customer service

Enjoy peace of mind with an award-winning customer support team always within reach.

What our customers say about pdfFiller

See for yourself by reading reviews on the most popular resources:
Support person was very professional and had a great deal of patience. Recommend some kind of tutorial or steps for getting started before filling a form. For example to edit steps 7, 8, 9. To save steps 3,4,5, etc. It would be great if a hot line number was available in some cases. Thanks again for all of your assistance. I look forward to using your service again in the future and would recommend your product highly.
Earl G
2016-12-29
I found PDFfiller through Goggle search after trying numerous other sites. I was pleased at how easy your site was to use, in addition to all the options and of course, the price.
Joanne M
2017-02-08
I am a first time user. I've experienced some difficulty but the Support Team is right on it and I expect it to be resolved soon. Your support is outstanding!
Don B
2018-08-29
The intricacies of weaving through browser and google app to use this plugin are quite noteworthy. I consider it a great achievement that the plugin seems to work, even when it encounters strange circumstances. For all that this is a bit ungainly, there were some things I wished worked a little better, but overall quite good.
Todd P
2020-01-07
Best tool with advanced features - PDF Filler Add, edit, share & highlight option in one application. Easy to use and must have application if you publish documents frequently. If you work on PDF files daily it is a must have application. It handles PDF files and let you edit and add content very easily. - Easy to use tools - Add text, edit text, highlight, notes etc. many features in one application - No watermarks which makes it easy to edit and share. It is working good till now and not found any such cons in the application. Conversion of files do takes times and using advance features needs a pro in that. It gets slower with big files.
Vishal G.
2019-12-27
Satisfied customer I had my free trial with the company but found that it was not for me. The payment had been taken out of my account. I contacted the company and with in minutes I had a reply and my money was refunded to me. I am retired and do not use my computer to its full extent. If this experience is anything to go by then I am sure everyone will be satisfied with the company. Thanks to everyone for their help.
T G GOGGINS
2023-08-03
What do you like best? GREAT to use, has lots of options and you can upload almost anything! What do you dislike? I wish that there were more options, like adding icons, or company stamps. I also have found sometimes when I download it there are lines that run through it, very frustrating when it took like an hour to manipulate a document, and it won't upload without random lines. What problems is the product solving and how is that benefiting you? Specifically AIA forms for commercial contracting, such a great tool!
Stephanie Atwood
2022-11-03
So far this has been exactly what I was looking for. We just upgraded from paper to a software system and I need something to make our contracts and enrollment documents fillable for the parents and students without redoing everything.
maribeth w
2021-05-19
Could be worse! Cheap, handy, available on all my devices. Billing department works very fast and efficient. Glitches and crashes while I am doing offline editing. What do you think about this review?
Garreth Bloom
2021-03-19

Calculations in a PDF

When you are a student, banker, accountant or actuary, you spend much time on different calculations. The Add Fillable Fields feature allows you to insert different types of fields into your PDF or Word document and do complex calculations. Transform any document or form with smart digital fields using the drag and drop wizard.
To get started, upload the document to your pdfFiller account and open it in the Editor.
Screen
To create fillable fields for formula, click on the Add Fillable Fields tab on the right.
Screen
When the tab opens, you see different types of fields that you can add to your document. To add the Formula Field, select Formula.
Screen
Drag and drop the selected field anywhere on the document.
Screen
Open the Formula Builder at the top of your document. It will help you calculate a value based on number fields in the document.
Screen
Resize the field by dragging its corners or edges. Use the text formatting tools to preset the field’s text format including the font, size, color and alignment of text. Change the format of the calculated value by clicking Format on the right. Click the Save orange button in the top right corner to save the changes.
Screen
Once you’ve clicked Save, you will see the calculated value on the place where you’ve dragged and dropped the field.
Screen
To delete a fillable field, click on the trash can icon above it. You can customize any fillable field. Click Advanced in the right pane and select the options you need.
Screen
After you’ve added the Formula Field to your document, you can edit your document, sign or send it to be signed and share. When you’ve finished, click the Done orange button in the top right corner.

How do I do calculations in a PDF?

01
Upload the document to your pdfFiller account and open it in the Editor.
02
Click on the Add Fillable Fields tab on the right.
03
Select Formula.
04
Open the Formula Builder to calculate a value.
05
Click Save.
06
Click Done.

Add Formulas and Calculations in PDFs Feature

Welcome to the new Add Formulas and Calculations in PDFs feature! Say goodbye to manual calculations and let this feature do the work for you.

Key Features:

Easily add formulas and calculations to your PDF documents
Support for a wide range of mathematical functions
Customize formulas to suit your specific needs

Potential Use Cases and Benefits:

Create professional-looking invoices with automatic calculations
Generate accurate financial reports with ease
Speed up data analysis by automating calculations

Solving your problem has never been easier with this feature. Take the hassle out of crunching numbers and let Add Formulas and Calculations in PDFs streamline your workflow.

Get documents done
from anywhere

Create, edit, and share PDFs even on the go. The pdfFiller app equips you with every tool you need to manage documents on your mobile device. Try it now on iOS or Android!

How to Add Formulas and Calculations in PDFs

To make the most out of the Add Formulas and Calculations in PDFs feature in pdfFiller, follow these simple steps:

01
Open the PDF document you want to add formulas and calculations to.
02
Click on the 'Tools' tab located at the top of the page.
03
From the dropdown menu, select 'Formulas and Calculations'.
04
A sidebar will appear on the right side of the screen with various options.
05
Click on the 'Add Formula' button to start creating a new formula.
06
In the formula editor, you can enter mathematical expressions using numbers, operators, and functions.
07
To reference fields in your PDF, simply click on the 'Insert Field' button and select the desired field.
08
You can also use the 'Insert Function' button to add pre-defined functions to your formula.
09
Once you have entered your formula, click on the 'Save' button to apply it to the selected field.
10
To edit or delete a formula, click on the respective buttons next to the formula in the sidebar.
11
You can add multiple formulas to different fields in your PDF document.
12
To preview the calculated values, click on the 'Preview' button in the sidebar.
13
If you need to make any changes, simply go back to the formula editor and modify the formula.
14
Once you are satisfied with the formulas and calculations, click on the 'Done' button to save your changes.

By following these steps, you can easily add formulas and calculations to your PDFs using pdfFiller's convenient feature.

For pdfFiller’s FAQs

Below is a list of the most common customer questions. If you can’t find an answer to your question, please don’t hesitate to reach out to us.
What if I have more questions?
Contact Support
pdfFiller is an online PDF editing platform. With pdfFiller, you can search for, edit, store, print and export PDF documents online without downloading and installing any software. pdfFiller also allows you to access and edit PDF documents from any device anytime.
Yes. You can easily do calculations in a PDF by adding a formula field to your document. Calculate a value based on number fields in the document in minutes.

#1 usability according to G2

Try the PDF solution that respects your time.
Users Most Likely To Recommend - Summer 2025
Grid Leader in Small-Business - Summer 2025
High Performer - Summer 2025
Regional Leader - Summer 2025
Easiest To Do Business With - Summer 2025
Best Meets Requirements- Summer 2025