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Fix: WordPress Memory Exhausted Error – Increase PHP Memory

Are you seeing an allowed memory size exhausted error in WordPress? This is one of the most common WordPress errors, and you can easily fix it by increasing the php memory limit in WordPress. In this article, we will show you how to fix WordPress memory exhausted error by increasing PHP memory.

Fix: WordPress Memory Exhausted Error – Increase PHP Memory

What is WordPress Memory Exhausted Error?

WordPress is written in PHP, which is a server-side programming language. Every website needs a WordPress hosting server for it to function properly.

Web servers are just like any other computer. They need memory to efficiently run multiple applications at the same time. Server administrators allocate specific memory size to different applications including PHP.

When your WordPress code requires more memory than the default allocated memory, you get to see this error.

Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 2348617 bytes) in /home4/xxx/public_html/wp-includes/plugin.php on line xxx

Memory exhausted error displayed on a WordPress site

By default, WordPress automatically tries to increase PHP memory limit if it is less than 64MB. However, 64MB is often not high enough.

Having said that, let’s see how to easily increase PHP memory limit in WordPress to avoid memory exhausted error.

Increase PHP Memory Limit in WordPress

First you need to edit the wp-config.php file on your WordPress site. It is located in your WordPress site’s root folder, and you will need to use an FTP client or file manager in your web hosting control panel.

Next, you need to paste this code in wp-config.php file just before the line that says ‘That’s all, stop editing! Happy blogging.’

define( 'WP_MEMORY_LIMIT', '256M' );

This code tells WordPress to increase the PHP memory limit to 256MB.

Once you are done, you need to save your changes and upload your wp-config.php file back to your server.

You can now visit your WordPress site and memory exhausted error should disappear now.

If you are new to WordPress, then take a look at our beginners guide on how to copy and paste code from the web.

We also have a step by step guide on how to find and edit wp-config.php file.

Note: If this solution does not work for you, then this means your web hosting service provider does not allow WordPress to increase PHP memory limit. You will need to ask your web hosting provider to increase your PHP memory limit manually.

That’s all we hope this article helped you solve WordPress memory exhausted error by increasing PHP memory limit. You may also want to see our step-by-step beginner’s guide to troubleshooting WordPress errors.

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Reader Interactions

435 CommentsLeave a Reply

  1. This Worked for me.

    /**This is a test for memory*/
    define(‘WP_MEMORY_LIMIT’, ’64M’);

    Thank you for this wonderful share.

  2. Should the memory limit ever be higher than 64M? Most WP sites i’ve worked on the average page load never exceeds 40-5megs. The reason I ask, is I read that the WP_MEMORY_LIMIT defines the amount of memory WordPress can use per Apache thread. Which means that multiple threads will use more and more, and eventually swap to disk which is never good.

    Anybody an expert and can answer this?

  3. It seems like WordPress is either unable to create wp-config.php file or the file gets deleted after the install. Use ftp to make sure that there is a wp-config.php file present on your site. If not then try creating one by renaming the wp-config-sample.php file to wp-config.php file. You will need to manually edit the file and provide your database information.

      • if i locate it on an ftp, and i click on it, it brings it like a download file, pls help with a full guide on how to do it pls my site is going down everyday…

        • don’t double click it. Either right click and select EDIT or highlight it and look for an EDIT button somewhere (maybe at the top if it’s Godaddy). Good Luck!

  4. I opened the wp-config.php file from my ftp directory.
    I was not sure how to completely enter the adjustment – I didn’t know basic coding for php, so I just copied the basic precursors shown for each entry and added as follows:

    /**This is a test for memory*/
    define(‘WP_MEMORY_LIMIT’, ’64M’);

    It worked!

  5. Thank you!!! This fixed a problem I created myself and saved having to pay someone at the hosting company to update the file.

  6. I am getting this exact error but I am not sure how to get into do I get into wp-config.php which is located in the root WordPress directory as I don’t know where to find it. Yes I am a complete beginner. Can you help?

    Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 122880 bytes) in /home/crooked1/public_html/wp-includes/SimplePie/Sanitize.php on line 331

  7. Thank you so much!! For real.. you have been a lifesaver. I can’t tell you how appreciative I am for your help.

  8. Hi,

    I’ve tried to increase the limit to 64mb, and I got this warning until 5 times:

    ‘WARNING: Job restart due to inactivity for more than 5 minutes.’

    The database backup is stopped until 60s%, and the result is below when it tried to upload to Dropbox:

    ‘ERROR: Uploaded file size and local file size don’t match.’

    What’s wrong with it? I’m using Bluehost.

    Thanks!

    PS: I’m not a technical person, so give explanation in details :-)

  9. Been having a doozy of a time working on my site and I would sacrifice a MacBook at midnight to get my site working, one little line of code and we are back up. Thanks!

  10. THANK YOU so much!!!! This worked like a charm and took me less than a minute to implement.

  11. Thank you so much!!!!
    I’m in the middle of a launch and all of a sudden I couldn’t update or create any web pages on the whole site because of a 500 Internal Server Error. (And of course this happened as soon as I discovered the Home page had a big problem.)

    Could get no help from support, am not a web developer.

    Yet I was STILL able to follow your instructions and Hallelujah! Miracle of Miracles! Everything works now.

    All this work driving traffic, getting new people to the site – almost wasted due to server error – but Disaster Averted! you saved the day.

    My sincerest gratitude.

    Again, can’t thank you enough.

  12. Thanks so much! I was about to bitch to WooThemes that their $129 extension was breaking my site, but it turned out to be a memory issue. Cheers!

  13. On line 36/37 of wordpress, wp-config.php you must type:

    /** Memory Limit */
    define(‘WP_MEMORY_LIMIT’, ’64M’);

    For me this problem is solve thi way. You can change 64M with what value you want.

    • This comment is sooo key!

      You have to add define( ‘WP_MEMORY_LIMIT’, ’64M’ ); just before the unique key and salts are defined, otherwise the change doesn’t take effect. Thanks!!!

      • yesssss thanks, I was wondering why it didn’t work for me. It was because so far no one told me WHERE in the wp-config i had to add this line. THANKS!!!

    • Thank you for clarifying this step. Now I know why it never just changing the other line for the value didn’t work before. This saved me big time for a client tonight!

  14. Hello,
    Today I had a problem with wordpress: after I logged appeared “white screen of death”. We went into cpanel and inserted “define (‘WP_MEMORY_LIMIT’, ’64M ‘)’ in wp-config.php and everything went very well.
    Thanks a lot WPBeginner.

  15. Thanks a lot, i work very hard with every method i found on internet, but i filled , my problem occur during word-press installation i pasted this code in mid and increase its value to 128 mb , now its works fine, thanks a lot again.

  16. My host provides 64MB, and wants a hefty kicker to increase the php memory limit – so I’m inclined to be “green” and reduce my memory use.

    HOW might I determine what plugins or other things to remove to stay under 64MB
    A) php memory consumption, e.g. which plugins are being greedy
    B) have I got a memory leak issue, e.g. any plugins being nasty

    Thank you for this forum, by the way – I am truly a beginner, but excited about WP (grrr, if I can make it jump its hoops right)

  17. Didn’t work for me, but I’m not sure what it means to be “inside the main php tag”. I opened the file in Dreamweaver and did a search. The word “main” doesn’t appear anywhere on the page. So I put the code in line 2, just after the “<php". Tried it at 64 and 128. Thanks.

  18. Thanks for the help.
    But 64M was already default for me and of course it wasn’t sufficient so I changed it to 96M and I think u should mention this as well.

  19. Nice but nothing works – use rackspace cloud – tried 32 – 64 – 128 – 256- 512 – 1024Mb MU site i can’t go more up and only in admin i can’t get access after a plugin from wpmudev so guess i have to delete that and try something pro.

  20. its really work,, i had problem of internam server,,, when add new plugine,,, i just increse memomry limit
    define(‘WP_MEMORY_LIMIT’, ’64M’);
    in wp-admin and problem solved..

    tthnaks a lot

  21. thanks! for me the provider had to change a setting to increase the memory limit, but that did fix it!

  22. Thanks a million for this! I got the error message right after the WordPress install–I never even had a chance to add a plug-in.:

    Fatal error: Allowed memory size of 33554432 bytes exhausted…

    All seems to be working fine now.

  23. I have tried to do this, but it has not solved the problem.  I am on 1&1 hosting and I have tried all the changes, but I still get this error whenever uploading a semi-large picture:
     
    Fatal error: Out of memory (allocated 29884416) (tried to allocate 4096 bytes) in /homepages/21/d258522816/htdocs/TBJFilms/WP/wp-includes/media.php on line 1010
     
    What is your suggestion?

  24. Tried placing this at the end of the wp-config.php and didnt work.

    However, placing it on top right after the <?php tag worked. Hooray!

    • Yes, I used the
      1error_reporting(E_ALL); ini_set(‘display_errors’, 1);
      2
      3define( ‘WP_DEBUG’, true);I found in a post next to this one and was getting an error by using define(‘WP_MEMORY_LIMIT’, ‘128M’); on the last line of my php-config file. Thanks to this comment I placed it right below <?php tag at the top and now the error report is no longer :) I just hope my site doesn't keep crashing on every new plugin install, going to check that now. Thanks to all you geeks out there!

  25. this was a great help, but as you noted it could easily be a plugin, or as someone mentioned it could be a memory leak.

    And as others have pointed out, there are memory settings for a reason, some hosts will cut your services if you try to circumvent them.

    Is there a way to check on what’s eating memory?

    I’ll be searching, but this is something that should be listed under related posts, or as a note and link at the end regarding one of the “numerous solutions for it”. Going for the “simplest one” might get you through the day, but is may not be a good long term solution as it may cover up the real problem and delay the inevitable.

    • Worked for me!! I changed my site language to Spanish and I guess that used up the memory. Added the simple line recommended in the post and voilá!! Back in my admin mode. The really helpful part was “Don’t panic!” because my anxiety level was rising fast.
      Thanks ever so much.

    • define(‘WP_MEMORY_LIMIT’, ’64M’);
      not solved
      define(‘WP_MEMORY_LIMIT’, ‘164M’);
      solved
      THANKS

  26. @shally1584 There is no = << in our code. So are you sure that you are pasting our code as an independent function and not as part of something else.

  27. hi.i tried to adjust memory limit and got this error

    ‘Parse error: syntax error, unexpected ‘=’ in /home/amanerdm/public_html/beaverealty.com/wp-config.php on line 62′

    pls help fix this.thanx.

  28. Thank you for this post… I had a couple of category / archive query pages that were throwing this error after I upgraded to WordPress 3.1. I was just about to re-write the queries until I found your post in a Google search.

    You saved me a lot of work and headaches :)

  29. I ended up having to switch hosting companies because I couldn’t get my current one to increase the memory from 32MB to, well, anything more. Pretty sad. Took a bit of hassle to transfer three WordPress sites (and multiple other sites), but it was worth it. My current host offers 128MB and my sites are working SO much better. I can actually add plug-ins.

  30. Hello
    I tried the fix by adding the line immediately after the opening >php tag (line 1)
    define(‘WP_MEMORY_LIMIT’, ’64M’);

    It did not work for me BUT
    I placed the line with comments for my own use on (as it happens) line 22 and it worked.

    I am testing this procedure on a test WP site using Twentyten 1.2 Theme

    /home/par*****/public_html/wp-config.php

    Line 22 /** WP memory limit Note it does not work when placed immediately after line 1 */
    define(‘WP_MEMORY_LIMIT’, ’64M’);

  31. This trick doesn’t work for me ever since WP 3.

    what I found worked was to create a PHP.INI file in the wp-admin folder with the line:

    memory_limit = 128M

    (or whatever you want to make it)

  32. I tried this, but my host limits it to 32 megs. Can anyone recommend a good host for WP, because I’m going to have to change. Thanks!

  33. I have done the trick but seems like nothing happened. The error keep showing so can you suggest other solutions?

  34. Great article. A brand new plugin that may soon find its way on to this list is Cobalt WP Boost.

    Check it out here:
    http://frugaltheme.com/about/cobalt-wp-boost-plugin/

    It allows blog owners to raise their WordPress Memory Limits with a couple of mouse clicks, as well as showing at-a-glance memory usage information. WordPress keeps its internal memory limit at 32MB, which is fine for a small-time blog; but if you’re trying to add any robust plugins for social networking or ecommerce applications, 32M will not suffice. This problem can only be expected to worsen with the release of 3.0 which, judging from the beta release, will consume a lot more memory itself without upping the 32MB limit.

  35. Just remember that if the problem is a memory leak (either in PHP itself or in some library that is used by a plugin), this will merely delay the occurence.

    Before you change the memory limits, you should ensure that you’re using the most up-to-date versions of any plugins. Be sure you are running the newest version of WP. If your host offers multiple versions of PHP, be sure you’re using version 5.

    Your hosting service may have preset limits on memory usage. If your editing causes you to exceed those limits, your service may be suspended or canceled without warning.

  36. I think the better way is to put this limit in wp-setting.php file where this memory limit already described as 32M, just changed that value to 64M.

  37. I think that this might fix an issue I’ve been having with my site. I just can’t figure out where the main php table is in the wp-confip.php to place the line.

    Thanks!

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