Convert megabytes to kilobytes

1 MB=1,000KB

Use the converter below to change any megabytes value into kilobytes instantly — with formula, conversion table, and real-world examples.

You have

Equals

1,000

Conversion formula

Forward

kilobytes = megabytes × 1,000

Reverse

megabytes = kilobytes × 0.001

Example: 10 MB × 1,000 = 10,000 KB.

About both units

From

Megabyte

The megabyte equals 1,000,000 bytes (SI) or 1,048,576 bytes (binary, MiB). Used for photos, songs and medium-size documents. A standard MP3 song is 3–5 MB.

Real-world: MP3 song: 3–5 MB. High-res JPEG: 2–8 MB. PDF ebook: 5–50 MB.

Read full megabyte reference →

Kilobyte

The kilobyte equals 1000 bytes (SI) or 1024 bytes (binary). In drive marketing and networking, KB = 1000 B. In RAM and some OS contexts, KB = 1024 B. Use KiB when you specifically mean 1024 bytes.

Real-world: Simple text file: 1–10 KB. Webpage HTML: 20–200 KB. Email: typically under 100 KB without attachment.

Read full kilobyte reference →

Megabyte to Kilobyte conversion table

Common megabytes to kilobytes values for quick reference.

Megabyte (MB)	Kilobyte (KB)
1 MB	1,000 KB
10 MB	10,000 KB
100 MB	100,000 KB
500 MB	500,000 KB
1,000 MB	1,000,000 KB
5,000 MB	5,000,000 KB
10,000 MB	10,000,000 KB
50,000 MB	50,000,000 KB
100,000 MB	100,000,000 KB
500,000 MB	500,000,000 KB

Tips & common mistakes

Quick tips

SI: 1 MB = 1000 KB = 1,000,000 B.
Binary MiB = 1,048,576 B — 4.86% larger.
HD drives, networks, SSDs: SI MB.

Avoid these

Mixing MB and MiB without noting the difference (~5%).
Confusing MB (storage) with Mb (megabit, 1/8).
Assuming 1 GB = 1000 MB always — correct in SI; binary it's 1024.

Frequently asked questions

How many kilobytes in a megabyte?

One megabyte equals 1,000 kilobytes.

How do I convert megabytes to kilobytes?

Multiply the megabyte value by 1,000 to get the equivalent in kilobytes.

What is 100 megabytes in kilobytes?

100 megabytes equals 100,000 kilobytes.

Is a megabyte bigger than a kilobyte?

Yes. 1 megabyte equals 1,000 kilobytes, so one megabyte is larger.

How to convert megabytes to kilobytes without a calculator?

Multiply by 1,000 for a quick estimate; use a calculator for precise results.

Related data conversions

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