Is the data converter private?
Yes. Conversions run entirely in your browser. Values you enter are not uploaded to EverydayTools servers.
Convert storage units with an explicit SI vs IEC toggle so marketing terabytes and OS “gigabytes” stop fighting in your head—then copy a one-line summary for tickets or specs.
A data size converter translates amounts between bits, bytes, and prefixed units—using either decimal (SI, powers of 1000) or binary (IEC, powers of 1024) steps—so file sizes, backups, and hardware labels can be compared without hand-calculator errors.
Digital storage is counted in bytes. Prefixes group large counts: SI uses kilo = 1000, mega = 10⁶, giga = 10⁹, and so on—the system printed on many SSD boxes and cloud invoices. IEC binary prefixes (KiB, MiB, GiB, TiB) use powers of 1024 (2¹⁰), which matches a lot of software internals and RAM sizing.
The famous 'missing gigabytes' on a new drive are usually not corruption: the label and the OS are often using different counting bases. Networking speeds add another wrinkle—Mbps is bits per second, while file managers show MB/s (bytes per second), an 8× difference.
Pick the same convention as your source: decimal for many product labels, binary for much OS and developer math—and never mix Mbps with MB/s without dividing by eight.
Concise answers for common searches — definitions, steps, and comparisons.
Yes. Conversions run entirely in your browser. Values you enter are not uploaded to EverydayTools servers.
Use SI (KB, MB, GB with 1000 steps) for SSD labels and many cloud bills. Use IEC (KiB, MiB, GiB with 1024 steps) for RAM sizing and much OS or developer math.
Divide megabits per second (Mbps) by 8 to estimate megabytes per second (MB/s). A 100 Mbps line is roughly 12.5 MB/s before protocol overhead.
Every unit is converted through bytes: value × (unit’s bytes per 1) ÷ (target unit’s bytes per 1). SI uses 10³ⁿ; IEC uses 2¹⁰ⁿ from the byte upward.
Formula
bytes = amount × factor(unit); targetAmount = bytes ÷ factor(target). Bit uses factor ⅛ byte.Use the SI (1000) toggle for label-style megabytes and gigabytes, or IEC (1024) for kibibytes and mebibytes—the units in the lists change to match.
Type a non-negative number; commas are ignored. All listed units update together.
Tap a unit under From or To, or use Swap to flip the pair. The highlighted row shows the conversion factor.
Copy Result grabs a one-line summary including which convention you used. Share appears on supported devices.
Input
1 TB (decimal, SI) capacityOutput
≈ 931 GiB shown in many OS summaries1×10¹² bytes ÷ 2³⁰ ≈ 931.32. The bytes are the same; the divisor changed.
Input
12,000 MiB of JPEGsOutput
≈ 11.71875 GiB12,000 × 2²⁰ ÷ 2³⁰ = 12,000 ÷ 1024 GiB—pure binary stepping.
Common real-world scenarios where this tool saves time.
Turn '500 GB incremental' into TiB or bytes so tape and object-storage tiers line up with vendor quotes.
Estimate how many hours of 4K footage fit a drive when editors mix GB/hour rules with binary project disks.
Show Mbps vs MB/s and why a 100 Mbps link does not move 100 megabytes per second.
Real files vary with quality and compression—use as intuition, not guarantees.
| What | Rough size |
|---|---|
| MP3 song (3–4 min) | 3–10 MB |
| Smartphone JPEG | 2–8 MB |
| Raw photo (24 MP) | 15–40 MB |
| 1080p movie (compressed) | 4–8 GB |
| 4K movie (compressed) | 40–100 GB |
| AAA game install | 50–150 GB |
| Mobile OS update | 3–6 GB |
Streaming bitrate changes these numbers; always check your source file or export settings.
Time ≈ file size in bits ÷ line rate in bits per second.
| File | 100 Mbps link | 1 Gbps link |
|---|---|---|
| 1 GB (8×10⁹ bits) | ~80 s | ~8 s |
| 10 GB | ~800 s (~13 min) | ~80 s |
| 100 GB | ~8,000 s (~2.2 h) | ~800 s |
Divide Mbps by 8 for MB/s. TCP, Wi-Fi, and disk writes usually reduce real throughput.
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MB (megabyte) usually means 10⁶ bytes (1,000,000) in the SI decimal system—the convention many drive labels and cloud bills use. MiB (mebibyte) is exactly 2²⁰ bytes (1,048,576) in the IEC binary system. The ratio is about 4.86% at the megabyte scale and grows with each step, which is why mixing them stacks error.
Use 1000 (SI) when you want to match storage marketing, many cloud SKUs, and scientific SI prefixes. Use 1024 (IEC: KiB, MiB, GiB) when you want to match how much software and OS internals count RAM and some filesystem math. This tool has a toggle so you can see both without guessing.
The label TB is usually 10¹² bytes (decimal). Windows historically shows “GB” using binary gibibytes (dividing by 2³⁰). 1,000,000,000,000 ÷ 1,073,741,824 ≈ 931.3—that is the same capacity expressed in a different counting base, not missing space from formatting alone.
Megabits per second (Mbps) counts bits; megabytes per second (MB/s) counts bytes. Divide Mbps by 8 for a first-order MB/s estimate. Example: 100 Mbps ≈ 12.5 MB/s before protocol overhead. Real downloads are often a bit lower than the ideal line rate.
In decimal SI: 1 TB = 1,000 GB. In binary IEC: 1 TiB = 1,024 GiB. Headlines and storefronts usually mean decimal TB; OS panels may show GiB while saying “GB.” Pick the toggle that matches the document you are reconciling.
Historically both were called “kilobyte,” which caused decades of confusion. Modern practice: KB = 1000 bytes (SI), KiB = 1024 bytes (IEC). If a spec does not say which, check context—RAM and many developer tools lean binary; consumer storage labels lean decimal.
No. All math runs in your browser; nothing you type is sent to our servers.
Inputs stay in your browser; nothing is uploaded for conversion.
Factors are exact powers of 1000 or 1024. Real disks also reserve space for formatting and firmware; this tool converts ideal capacities only.
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Reviewed by EverydayTools Editorial Team on 2026-05-22.
Data size converter — SI (1000) or IEC (1024) from a byte baseline in your browser. Nothing uploaded. Line rates? Speed converter (Mbps ÷ 8 ≈ MB/s).
MB vs MiB?
MB = 1000² B (labels) · MiB = 1024² B (OS/dev)
1 TB SSD ≈ ?
~931 GiB in many Windows summaries
Mbps → MB/s?
Divide Mbps by 8 (bits vs bytes)
Convention
Binary (IEC) · steps of 1024
MB ↔ GB (decimal)
KiB / MiB / GiB (binary)
Bytes & bits
Capacity check
1 MiB = 0.000977 GiB= 1,073,741,824 bytes
Result
1 GiB
8,589,934,592 Bit · 1,073,741,824 Byte · 1,048,576 KiB · 0.000977 TiB
1,024 MiB = 1 GiB
Shortcuts: S swap · C copy
IEC binary factors
IEC (binary): KiB = 1024 B, MiB = 1024² B — common in RAM and many filesystem views.
Switch to SI for KB/MB/GB (×1000) when matching marketing or scientific prefixes.
1 GiB