Add Formulas 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 May 29, 2026

Try these PDF tools

Edit PDF
Quickly edit and annotate PDFs online.
Sign
eSign documents from anywhere.
Request signatures
Send a document for eSignature.
Share
Instantly send PDFs for review and editing.
Merge
Combine multiple PDFs into one.
Rearrange
Rearrange pages in a PDF document.
Compress
Compress PDFs to reduce their size.
Convert
Convert PDFs into Word, Excel, JPG, or PPT files and vice versa.

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:
Using it to send IRS forms, very flexible options. Would like to enlarge the font size for printing some forms. If I use it more in future I will be interested in the webinar, but no need right now.
J Beckman
2018-02-14
all the features save so much time! and the price of using them at first seemed ridiculous, but once you realize how much time and effort this can save you the price automatically becomes such an amazing deal.
Nick
2019-06-25
Good less expensive alternative to some of the competition Overall, I have been satisfied with PDFfiller The software works just like advertised. I love that it is super reliable to work when I need it. The user interface was slightly challenging to get used to but after that, it has been nice.
Daniel H.
2019-08-21
Does way better than I expected Works way better than any other ones I have tried. Will not use anything else. Allows me to make changes to any document I have scanned in so far.
Southernmost Vapor
2023-05-09
********** was the easiest & fastest customer service to resolve a billing issue. If I need to use a document signing company in the future it will most definitely be **********! Thank you ********** Team you truly are amazing! This world needs more kindness in it, thank you for everything!
caprice f.
2022-04-12
I found myself trying to rate it 4… I found myself trying to rate it 4 stars, but it's honest about what it is- a robust, web-based pdf editing tool that doesn't try to be more than it is, and does what it is supposed to do very well.
Robert Pierce
2022-01-25
I made a mistake and accidentally… I made a mistake and accidentally signed up for this service. When I got the bill for $96, I was shocked. I thought it was going to be such a hassle and was so pleasantly surprised. I got a full refund within an hour of writing to them with a very nice note.
donnalou stevens
2021-08-10
easy to use and there are a lot of options to have... easy to use and there are a lot of options to have things mailed, emailed, faxed, etc right with a click of a button and entering information. It does have a fee for this BUT it is SUPER convenient so honestly its a very small price to pay to not have to worry about all the extra work i would have to do myself.
anonymous V.
2020-05-20
I love that I can easily cancel my… I love that I can easily cancel my Trial subscription. It is not scam, you can try and leave if you dont need it.
Jasmina Markovic
2025-05-16

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