Before buying a phone, camera, or hard drive, it helps to translate an abstract storage number like "128GB" into something concrete — roughly how many photos, songs, or hours of video that actually holds. This calculator does that translation using typical average file sizes for each media type.
Real file sizes vary quite a bit depending on resolution, compression, and format — a RAW photo is much larger than a compressed JPEG, and 4K video takes up dramatically more space than standard HD — so these figures use common average estimates rather than your device's exact settings.
Use it as a general planning guide when deciding how much storage you actually need, keeping in mind that operating systems and apps also use a meaningful chunk of any device's total storage.
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Bookmark this page if you expect to use this tool regularly — it loads fast and behaves the same way every time, with no account needed.
This kind of task shows up constantly in everyday writing, coding, design, and admin work, which is exactly why a dedicated, focused tool saves so much back-and-forth.
A tool that does one job well, without a cluttered interface or unrelated features competing for attention, tends to be faster to use than a heavier all-in-one app.
If you find yourself needing this conversion or calculation often, keeping this page open in a tab is usually faster than digging through a bigger software suite's menus.
Because there's no sign-up or installation step, you can jump straight from search result to working tool in a couple of seconds.
Because the calculation or conversion happens instantly as you type, you can experiment freely and see how changing one value affects the result.
This tool avoids unnecessary steps like account creation or email verification, since the underlying task itself is simple enough not to need them.
Frequently asked questions
Why do my actual photo counts differ from this estimate?
Actual file sizes vary by camera resolution and compression settings — a modern smartphone photo can range from 2MB to over 10MB depending on settings, so this uses a common average.
Does this account for the operating system's own storage use?
No, this only estimates media capacity; on an actual device, the OS and pre-installed apps typically use several gigabytes before you store anything.