Estimate your email storage usage with our free tool! Input email count and sizes to see if you're nearing your Gmail or Outlook limit.

Managing digital clutter is more important than ever, especially when it comes to your inbox. Many of us accumulate thousands of messages over time, often without realizing how much space they take up. Whether you’re using Gmail with its 15GB cap or Outlook with a generous 50GB, knowing where you stand can save you from the dreaded “storage full” notification.
Emails might seem small, but attachments like PDFs, photos, or videos can add up fast. A tool to calculate email storage usage helps you visualize the impact of your inbox habits. It’s not just about numbers—it’s about staying organized and ensuring you don’t lose access to new messages when space runs out. Beyond that, keeping tabs on your usage can prompt smarter habits, like regularly clearing out spam or old newsletters.
If you’ve ever wondered how close you are to hitting your provider’s limit, a quick estimation can be eye-opening. Pair that with simple actions like deleting bulky files or archiving important data elsewhere, and you’ll keep your digital workspace tidy. Take a moment to assess your mailbox today; a little effort now prevents a big headache later.
Our tool provides a solid estimate based on the data you input, like email count and average size. It’s not exact since email providers may compress data or handle attachments differently, but it’s a great starting point to gauge your usage. If you’re super close to the limit, it’s worth double-checking directly with your provider’s dashboard for precision.
Most emails without attachments are around 75-100KB, which is why we suggest 100KB as a default. If you send or receive a lot of images or documents, that average can jump significantly—sometimes to 1MB or more per email. Feel free to adjust the input based on your habits for a better estimate.
If you’re close to maxing out, start by deleting old or unnecessary emails, especially those with large attachments. You can also download important files to your device or cloud storage and remove them from your inbox. For a long-term fix, consider archiving emails or upgrading your plan if your provider offers more space.