How do I calculate the pixels needed for a print?

Multiply the physical width and height in inches by the target PPI. An 8 × 10 inch print at 300 PPI needs 2400 × 3000 pixels before accounting for any bleed or provider-specific crop.

What is the difference between PPI and DPI?

PPI describes how many image pixels are assigned to each printed inch. DPI describes a printer’s physical ink or toner dots per inch. People often say DPI when planning an image file, but pixel-to-print calculations use PPI.

Is 300 PPI always required for printing?

No. 300 PPI is a common target for close-viewed photo prints, but acceptable resolution depends on viewing distance, print process, paper, subject detail, and the provider’s workflow. Large displays viewed from farther away often use fewer pixels per inch.

Can changing the PPI value add detail to an image?

No. Changing resolution metadata without resampling does not create pixels. Resampling can increase pixel dimensions, but generated or interpolated pixels are not the same as detail captured in the original image.

Does the calculator include bleed and trimming?

No. It converts the finished width and height you enter. If a printer requests bleed, add the required physical amount to the document dimensions before calculating pixels, and follow that provider’s template.

Can I convert centimeters to pixels?

Yes. Choose centimeters in the print-to-pixels mode. The calculator converts centimeters to inches using 2.54 centimeters per inch, then multiplies by the selected PPI.

Does this calculator resize my image?

No. It only calculates print and pixel dimensions. Use an image resizer after you know the target dimensions, and keep the original file so you can compare the resized result.

Pixel to Print Size Calculator

Convert image pixels to a physical print size at a chosen PPI, or work backward from inches or centimeters to the pixel dimensions a print needs. The calculator does not resample or alter an image.

How to calculate image size for printing?

1
Step 1: Choose a calculation direction
Start with image pixels to find a print size, or start with a physical print size to find the pixel dimensions you need.
2
Step 2: Enter dimensions and PPI
Provide the width, height, and target pixels per inch. Common planning values include 150 PPI for some distance-viewed prints and 300 PPI for many close-viewed photo prints, but the print provider’s specification is the source of truth.
3
Step 3: Use the calculated target
Compare the result with the original image and the printer’s requirements. If you need to resize, preserve the aspect ratio and inspect a proof before ordering a final print.

Reviews

Loved by Instasize Creators

4.7

| 325K App Store ratings

One of my go-to apps

Great app for filtering photos and even greater app for sizing pictures for not only posts but story photos as well... love this app I mainly use insta size for all my posts now ;)

@beachxbunny

Fast and Straightforward

Resizing photos for social media should be a cinch, but most editing programs are a pain to use. Of the dozen I’ve used, Instasize is the fastest, easiest and most consistent...

@Soho Brad

Great Sizes

Perfect app for the exact social media picture sizes. Love it. I use it daily. & I like the premade options they give you for different social medias!

@Baby24doll

I love instasize

Its the best app. for sizing photos to fit for Instagram or other forms of social media. You can also edit photos and create collages with multiple photos. It’s had been my friend for several years!

@Jay town

Always helpful

Always helpful when needing to resize photos

@Leobaby96

Huge fan

I love this app. Makes posting all types of photos. Love how it makes them fit on different formats

@Nicola Bella

I’ve been using for years. Can’t work without it.

I use this app everyday to perfectly resize images for all of my social media platforms

@The Flywire

LOVE

This app saved the day for me! I’m finally able to resize my photos for IG....effortlessly

@Tamrinaann

Great App

We use this App weekly to resize pics for social media posts. Very user friendly, easy to use program when you want to get in and out quickly...

@cle957

One of my go-to apps

Great app for filtering photos and even greater app for sizing pictures for not only posts but story photos as well... love this app I mainly use insta size for all my posts now ;)

@beachxbunny

Fast and Straightforward

Resizing photos for social media should be a cinch, but most editing programs are a pain to use. Of the dozen I’ve used, Instasize is the fastest, easiest and most consistent...

@Soho Brad

Great Sizes

Perfect app for the exact social media picture sizes. Love it. I use it daily. & I like the premade options they give you for different social medias!

@Baby24doll

I love instasize

@Jay town

Always helpful

Always helpful when needing to resize photos

@Leobaby96

Huge fan

I love this app. Makes posting all types of photos. Love how it makes them fit on different formats

@Nicola Bella

I’ve been using for years. Can’t work without it.

I use this app everyday to perfectly resize images for all of my social media platforms

@The Flywire

LOVE

This app saved the day for me! I’m finally able to resize my photos for IG....effortlessly

@Tamrinaann

Great App

We use this App weekly to resize pics for social media posts. Very user friendly, easy to use program when you want to get in and out quickly...

@cle957

One of my go-to apps

Great app for filtering photos and even greater app for sizing pictures for not only posts but story photos as well... love this app I mainly use insta size for all my posts now ;)

@beachxbunny

Fast and Straightforward

Resizing photos for social media should be a cinch, but most editing programs are a pain to use. Of the dozen I’ve used, Instasize is the fastest, easiest and most consistent...

@Soho Brad

Great Sizes

Perfect app for the exact social media picture sizes. Love it. I use it daily. & I like the premade options they give you for different social medias!

@Baby24doll

I love instasize

@Jay town

Always helpful

Always helpful when needing to resize photos

@Leobaby96

Huge fan

I love this app. Makes posting all types of photos. Love how it makes them fit on different formats

@Nicola Bella

I’ve been using for years. Can’t work without it.

I use this app everyday to perfectly resize images for all of my social media platforms

@The Flywire

LOVE

This app saved the day for me! I’m finally able to resize my photos for IG....effortlessly

@Tamrinaann

Great App

We use this App weekly to resize pics for social media posts. Very user friendly, easy to use program when you want to get in and out quickly...

@cle957

FAQ

Pixel to Print Size Calculator FAQ

Can't find what you're looking for? Contact support

Divide each pixel dimension by the target pixels per inch. A 3000 × 2400 pixel image at 300 PPI calculates to 10 × 8 inches. At 150 PPI, the same pixels calculate to 20 × 16 inches, but each printed inch contains fewer source pixels.