Storage Quota Estimate

Estimate origin storage usage and quota via the StorageManager API.

Processing: runs in your browser, nothing uploaded

Estimate origin storage usage and quota via the StorageManager API.

Browser API only — nothing is uploaded or stored on our servers.

About Storage Quota Estimate

Storage Quota Estimate on FileToolsHub is a free online browser tool.

Estimate origin storage usage and quota via the StorageManager API.

It is built for people testing devices and browser capabilities before a call or ticket.

Because Storage Quota Estimate is client-side, you can work with sensitive snippets without sending them to a third-party converter.

How to use Storage Quota Estimate

1
Open the page.
2
Read usage vs quota.
3
Refresh after clearing site data.

Why use Storage Quota Estimate

Storage estimate
Origin-scoped
No upload
Private

Use cases

Run Storage Quota Estimate to check this device or browser capability
Capture details for a support ticket before a meeting

Privacy

Storage Quota Estimate runs entirely in your browser on FileToolsHub. Your storage is processed in this tab and is never uploaded to our servers.

That means passwords, tokens, personal notes, and documents you paste or load stay on your device. Clear the page or close the tab when you are finished on a shared computer.

You still need a network connection to load the page the first time. After that, the core processing for Storage Quota Estimate does not require sending your content to FileToolsHub.

Limitations

Storage Quota Estimate depends on your browser. Very large inputs may slow or freeze older devices; try a smaller sample if the tab becomes unresponsive.