Convert 120 Megabit (Mb) to Kilobyte (KB).

120 Megabit equals 15,360 Kilobyte. Multiply 120 by 128.

120 Megabit = 15,360 Kilobyte

Worked example: converting Megabit to Kilobyte

Step 1 — start with the formula. KB = Mb × 128
Step 2 — substitute your figure. 120 Mb × 128
Step 3 — read the result. 120 Mb = 15,360 KB
Step 4 — check it in reverse. Mb = KB × 0.0078125 returns Invalid Mb, which matches the figure you started with.

Data Converter

21 units available

Decimals:

From

To

15,360

120 Mb = 15,360 KB

Formula:

KB = Mb × 128

With your value: 120 Mb = 15,360 KB

How big is that?

Everyday references on a logarithmic scale, all expressed in megabit so you can sanity-check the result.

Plain-text email (1/7.9e+3 your value)0.00191 Mb

Phone photo (1/3.9 your value)3.81 Mb

MP3 song (1/3.1 your value)4.77 Mb

Your value15.0 Mb

CD-ROM (45× your value)668 Mb

HD movie (2.5e+2× your value)3.81e+3 Mb

Other Megabit to Kilobyte conversions

85 Mb to KB 90 Mb to KB 96 Mb to KB 100 Mb to KB 150 Mb to KB 200 Mb to KB 500 Mb to KB Full Megabit to Kilobyte converter

Megabit to Kilobyte Conversion Table

Megabit (Mb)	Kilobyte (KB)
0.5	64
1	128
2	256
5	640
10	1,280
15	1,920
20	2,560
25	3,200
50	6,400
100	12,800
250	32,000
500	64,000
1000	128,000

Kilobyte to Megabit Conversion Table

Kilobyte (KB)	Megabit (Mb)
0.5	0.003906
1	0.007813
2	0.015625
5	0.039063
10	0.078125
15	0.117188
20	0.15625
25	0.195313
50	0.390625
100	0.78125
250	1.953125
500	3.90625
1000	7.8125

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Megabit (Mb)

Data

Conventional value

Decimal prefixes (kB, MB) are powers of 1000; binary prefixes (KiB, MiB) are powers of 1024 as standardised by IEC 80000-13.

Source: IEC 80000-13:2008, Quantities and units — Part 13: Information science and technology

International Electrotechnical Commission · Reviewed 2026-07-01

Kilobyte (KB)

Data

Conventional value

Decimal prefixes (kB, MB) are powers of 1000; binary prefixes (KiB, MiB) are powers of 1024 as standardised by IEC 80000-13.

Source: IEC 80000-13:2008, Quantities and units — Part 13: Information science and technology

International Electrotechnical Commission · Reviewed 2026-07-01

How to Convert Megabit to Kilobyte

To convert from Megabit (Mb) to Kilobyte (KB), multiply the value by 128.

Formula: KB = Mb × 128

Reverse: Mb = KB × 0.0078125

Step-by-Step Example

Start with your value in Megabit. For example: 5 Mb
Multiply by the conversion factor: 5 x 128
The result is: 640 KB

About Megabit

The megabit (Mb) is a unit of digital storage. One megabit equals 131072 bytes. UnitConvertLab converts it against every other data unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: data calculations, engineering and science, education.

About Kilobyte

The kilobyte (KB) is a unit of digital storage. One kilobyte equals 1024 bytes. UnitConvertLab converts it against every other data unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: data calculations, engineering and science, education.

Frequently Asked Questions

What is 120 Megabit in Kilobyte?

120 Megabit equals 15,360 Kilobyte.

How many Kilobyte are in 1 Megabit?

There are exactly 128 Kilobyte in 1 Megabit. This means the conversion factor from Megabit to Kilobyte is 128.

What is the formula to convert Megabit to Kilobyte?

The formula to convert Megabit to Kilobyte is: KB = Mb × 128. For example, to convert 10 Megabit to Kilobyte, you would multiply 10 by 128.

What is a Megabit?