Enter a value in any unit and see the equivalent in every other unit instantly — no upload, nothing sent to a server.
EkZapp's free MB/GB Converter turns any storage or file size value into every other common unit — Bytes, Kilobytes, Megabytes, Gigabytes, and Terabytes — in one click. Enter a number, pick the unit you're starting from, and see all five equivalents laid out side by side, instantly. It's built for anyone who needs a quick, reliable answer without doing binary math by hand or hunting through an operating system's file properties dialog.
A common situation this solves: you're checking whether a video file, backup, or download will fit on a drive, in an email attachment limit, or within a cloud storage plan, and the two numbers you're comparing happen to be in different units — one in MB, one in GB. Rather than converting by hand and risking a mistake, you enter the value here and instantly see it in every unit, so the comparison is exact.
The conversion uses the binary standard — 1 KB = 1024 Bytes, 1 MB = 1024 KB, 1 GB = 1024 MB, and 1 TB = 1024 GB — which is the same standard your computer's operating system uses when it reports file and drive sizes. This differs slightly from the decimal (1000-based) units that storage manufacturers often print on packaging, which is explained further below.
Everything happens instantly in your browser using plain JavaScript. No file is uploaded and no data leaves your device — you're only entering a number, so there's nothing to process on a server and no reason for any delay, regardless of how large or small the value is.
See Bytes, KB, MB, GB and TB side by side after one conversion — no need to convert step by step manually.
Runs locally in your browser the moment you click Convert — no loading, no server round-trip.
No account, no ads blocking the tool, no cap on how many conversions you run — completely free every time.
Check whether a file fits within an email provider's attachment limit, often stated in MB.
Compare a file or folder's size against a cloud storage plan's remaining GB before uploading.
Check if a video, backup, or photo collection will fit on a drive labeled in GB.
Estimate export file sizes or convert render output between MB and GB for storage planning.
Quickly convert disk, RAM, or backup sizes between units when planning storage or capacity.
Understand how a data plan measured in GB translates to how many MB-sized downloads it covers.
Check whether a game install, listed in GB, will fit in the storage remaining on a console or PC.
Convert a folder's byte count into GB or TB to plan how many backup drives or cloud slots you'll need.
| Task | EkZapp MB/GB Converter | Manual calculation |
|---|---|---|
| Time for one conversion | ✓ Under 2 seconds | A minute or more with a calculator |
| All units shown at once | ✓ Yes, all 5 | One pair at a time |
| Risk of a division error | ✓ None | ✕ Common with 1024 math |
| Decimal precision | ✓ Consistent | Depends on rounding by hand |
| Cost | ✓ Free | Your time |
Type the number you want to convert into the value field.
Choose the unit your value is currently in — Bytes, KB, MB, GB, or TB.
The equivalent values in all five units appear instantly in the result grid.
Read off whichever unit you need, or change the value and convert again as many times as you like.
There are actually two competing conventions for what "1 GB" means, and mixing them up is the single most common source of confusion in storage math. Operating systems like Windows and macOS use the binary standard, where each unit is 1024 times the one before it — this converter follows that standard, since it matches what you'll see in a file manager or disk properties window.
Storage device manufacturers, on the other hand, typically label capacity using the decimal standard, where 1 GB is exactly 1,000,000,000 bytes and each unit is 1000 times the one before it. This is why a drive labeled "1TB" often shows up as roughly 931 GB when you plug it in and check its properties — the drive genuinely holds 1 trillion bytes, but your operating system is reporting that same byte count using 1024-based units.
Neither convention is "wrong" — they're just answering slightly different questions. If you're comparing a file size shown by your computer against another file size shown by your computer, the binary standard used here will match exactly. If you're comparing against a number printed on packaging or a marketing spec sheet, keep in mind it's likely using the decimal definition instead, and expect a small gap between the two.
Useful ballpark figures when you're estimating whether something will fit before you've actually created it.
| File type | Typical size | Notes |
|---|---|---|
| A text document (few pages) | 20–200 KB | Plain text or simple Word doc |
| A smartphone photo | 2–8 MB | Depends on resolution and camera |
| An MP3 song (3–4 min) | 3–6 MB | At typical streaming bitrates |
| A PDF with images | 1–20 MB | Scanned pages are larger than text-only |
| A 10-minute 1080p video | 150 MB – 1 GB | Varies heavily with compression |
| A modern video game install | 20–150 GB | AAA titles trend toward the higher end |
| A full phone or laptop backup | 50–500 GB | Depends on stored photos and videos |
These figures vary widely based on compression, resolution, and format, so treat them as a rough starting point rather than an exact answer — when you know the precise byte count of a file, converting it above will always be more accurate than these general ranges.
The MB/GB Converter is one of more than fifty free tools on EkZapp, sitting alongside a Word Counter, Case Converter, and other lightweight utilities. Because the entire calculation runs as plain JavaScript in your browser, there's no server processing cost involved — the page loads once, and every conversion afterward is essentially free to run, which is exactly why the tool carries no usage limit or paywall.
This kind of utility tends to get reached for briefly — a quick check in the middle of moving a file, buying storage, or comparing drives — rather than used continuously. That usage pattern is part of why the tool is kept to a single page with no extra steps: enter a value, click Convert, read the numbers, and get back to whatever you were doing.
It also means there's very little that can go wrong. There's no account to lose access to, no file ever leaves your device, and no settings menu to configure before the tool does what you need. Every visit starts from the same blank state, which keeps the tool predictable whether you use it once a year or several times a week.