Check the size of RAM and HDD of a computer in your school. Make a table and write their size in Bytes, Kilobytes, Megabytes and Gigabytes.

Question

Accepted Answer

> [!TLDR]
> Read the RAM size from Settings → About and the HDD size from This PC, then convert down the unit ladder multiplying by 1024 at each step — worked here for an example machine with 8 GB RAM and a 500 GB HDD.

**Step 1 — find the sizes on the computer.**
- **RAM:** Settings → System → **About** → "Installed RAM" (or Task Manager → Performance → Memory).
- **HDD:** open **This PC** — each drive shows its total capacity (or Settings → System → Storage).

**Step 2 — the unit ladder.** Storage units grow in steps of 1024:

```text
1 KB = 1024 B      1 MB = 1024 KB      1 GB = 1024 MB
```

So to express a size given in GB in smaller units, multiply by 1024 once for MB, again for KB, and again for Bytes.

**Step 3 — worked example.** Suppose the school computer reports **8 GB RAM** and a **500 GB HDD** (an example — substitute your machine's actual figures):

RAM: 8 GB = 8 x 1024 = **8,192 MB** = 8,192 x 1024 = **8,388,608 KB** = 8,388,608 x 1024 = **8,589,934,592 Bytes**.

HDD: 500 GB = 500 x 1024 = **512,000 MB** = 512,000 x 1024 = **524,288,000 KB** = 524,288,000 x 1024 = **536,870,912,000 Bytes**.

**The table asked for:**

| Device | Size in GB | Size in MB | Size in KB | Size in Bytes |
|---|---|---|---|---|
| RAM | 8 | 8,192 | 8,388,608 | 8,589,934,592 | …

Unit	Abbreviation	Binary Value (common in RAM/OS)	Decimal Value (common in hard drives)
Byte	B	8 bits	8 bits
Kilobyte	KB	$2^{10} = 1024$ bytes	$10^3 = 1000$ bytes
Megabyte	MB	$2^{20} = 1,048,576$ bytes	$10^6 = 1,000,000$ bytes
Gigabyte	GB	$2^{30} = 1,073,741,824$ bytes	$10^9 = 1,000,000,000$ bytes
Terabyte	TB	$2^{40} \approx 1.1 \times 10^{12}$ bytes	$10^{12} = 1,000,000,000,000$ bytes

Q.Check the size of RAM and HDD of a computer in your school. Make a table and write their size in Bytes, Kilobytes, Megabytes and Gigabytes.

Concept understanding — Digital Storage Units

Digital Storage Units: From Intuition to Precision

How to remember the order

Device	GB	MB (x1024)	KB (x1024 again)	Bytes (x1024 again)
RAM	8 GB	8,192 MB	8,388,608 KB	8,589,934,592 B
HDD	500 GB	512,000 MB	524,288,000 KB	536,870,912,000 B

Q.Check the size of RAM and HDD of a computer in your school. Make a table and write their size in Bytes, Kilobytes, Megabytes and Gigabytes.

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