Data Storage Converter
Bytes, KB, MB, GB and TB, binary or decimal.
Enter your values
Enter the amount you are working with.
Choose one of: Bytes, Kilobytes, Megabytes, Gigabytes, Terabytes.
Choose one of: Decimal (SI), Binary (IEC).
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- Bytes
- 1,000,000,000,000
- Megabytes
- 1000000
- Gigabytes
- 1000
- Shown by Windows (binary)
- 931.32 GB
| Unit | Value |
|---|---|
| B | 1000000000000 |
| KB | 1000000000 |
| MB | 1000000 |
| GB | 1000 |
| TB | 1 |
Quick answer
Manufacturers use decimal units (1 GB = 1,000 MB) while operating systems often use binary (1 GiB = 1,024 MiB), which is why a 1 TB drive shows as 931 GB.
At a glance
| What it does | Bytes, KB, MB, GB and TB, binary or decimal. |
|---|---|
| Category | Conversions |
| Inputs needed | Amount, From, Standard |
| Main output | Bytes |
| Cost | Free — no sign-up, no download |
How to use the Data Storage Converter
- 1Enter the amount of data.
- 2Pick the unit.
- 3Choose decimal or binary counting.
Inputs explained
- Amount
- Enter the amount you are working with.
- From
- Choose one of: Bytes, Kilobytes, Megabytes, Gigabytes, Terabytes.
- Standard
- Choose one of: Decimal (SI), Binary (IEC).
Worked example
Using the values the calculator loads with:
Inputs
- Amount1
- FromTerabytes
- StandardDecimal (SI)
Results
- Bytes1,000,000,000,000
- Megabytes1000000
- Gigabytes1000
- Shown by Windows (binary)931.32 GB
Frequently asked questions
Why does my 1 TB drive show 931 GB?
The manufacturer counts 1 TB as 10¹² bytes; Windows divides by 1,024 three times, which gives 931 GiB of the same space.
What is a GiB?
A gibibyte — the IEC binary unit of 1,073,741,824 bytes, distinct from the decimal gigabyte.
What do I need to enter into the Data Storage Converter?
Just 3 values: amount, from, standard. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the Data Storage Converter work out the answer?
Manufacturers use decimal units (1 GB = 1,000 MB) while operating systems often use binary (1 GiB = 1,024 MiB), which is why a 1 TB drive shows as 931 GB. The working is shown step by step so you can verify the result by hand.
Is the Data Storage Converter free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.