How do you convert megabits per second to kilobytes per second?

To convert megabits per second (Mbps) to kilobytes per second (KB/s), multiply the data transfer rate in megabits per second by 125 (kilobytes per second = megabits per second × 125).

What is 5 megabits per second in kilobytes per second?

5 megabits per second (5 Mbps) is equal to 625 kilobytes per second (625 KB/s).

Which is larger, 1 megabits per second (Mbps) or 1 kilobytes per second (KB/s)?

One megabits per second (Mbps) is larger than one kilobytes per second (KB/s). Specifically, 1 Mbps contains 125 KB/s, whereas 1 KB/s is 0.008 Mbps.

How do I convert back from kilobytes per second (KB/s) to megabits per second (Mbps)?

To reverse the calculation from KB/s to Mbps, multiply your kilobytes per second value by the inverse factor 0.008 (or divide by 125). You can also click the Swap button in the tool above to flip directions in one click.

How many decimal places should I round Mbps to KB/s results to?

For everyday comparisons and quick estimates, rounding to 2 decimal places is usually sufficient (for example, 5 Mbps ≈ 625.00 KB/s). For engineering, laboratory, or machining specifications, select 4 or 6 decimals—or Scientific (10ⁿ) mode—in the calculator toolbar above.

Megabits per Second to Kilobytes per Second Converter

Enter the data transfer rate in megabits per second below to convert it to kilobytes per second.

Kilobytes per Second to Megabits per Second (KB/s → Mbps)

Convert Megabits per Second to Kilobytes per Second

Enter a value in megabits per second (Mbps) to convert to kilobytes per second (KB/s).

Value (Mbps)

From

Result

•

625kilobytes per second

5 Mbps = 625 KB/s

Result updates automatically

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Suggested Conversions

Reference:IEC / NIST (IEC 80000-13 Binary & Data Rate Units)

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Megabits per Second to Kilobytes per Second Conversion Table

Table showing various megabits per second measurements converted to kilobytes per second. Click any preset value or arrow to load it into the converter.

Megabits per Second (Mbps)	Kilobytes per Second (KB/s)
1 Mbps	125 KB/s
2 Mbps	250 KB/s
2.5 Mbps	312.5 KB/s
5 Mbps	625 KB/s
10 Mbps	1,250 KB/s
15 Mbps	1,875 KB/s
20 Mbps	2,500 KB/s
25 Mbps	3,125 KB/s
30 Mbps	3,750 KB/s
50 Mbps	6,250 KB/s

How to Convert Megabits per Second to Kilobytes per Second

To convert megabits per second to kilobytes per second, multiply the data transfer rate by the following conversion ratio: 125 kilobytes per second/megabits per second.

Since one megabits per second is equal to 125 kilobytes per second, you can use this simple formula to convert:

kilobytes per second = megabits per second × 125

The data transfer rate in kilobytes per second is equal to the data transfer rate in megabits per second multiplied by 125.

For example, here's how to convert 5 megabits per second to kilobytes per second using the formula above.

kilobytes per second = (5 Mbps × 125) = 625 KB/s

How Many Kilobytes per Second Are in a Megabits per Second?

There are 125 kilobytes per second in a megabits per second, which is why we use this value in the formula above.

1 Mbps = 125 KB/s|1 KB/s = 0.008 Mbps

Our megabits per second to kilobytes per second calculator automatically converts your data transfer rate measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.

Megabits per Second and kilobytes per second are both units used to measure data transfer rate. Keep reading to learn more about each unit.

What Is a Megabits per Second?

A megabits per second is a unit of data transfer rate equal to 1,000,000 bits per second (bps), the base unit for data transfer rate. 1,000,000 bits per second. [1]

The megabits per second is classified as a metric and SI-compatible unit of data transfer rate. Megabits per Second can be abbreviated as Mbps; for example, 1 megabits per second can be written as 1 Mbps.

In the metric system, "mega" is the standard SI prefix for millions, or 10⁶. This makes the megabits per second (Mbps) a convenient decimal multiple of the bits per second (bps).

In practice, megabits per second (Mbps) are widely used across large-scale industrial, bulk, and macro-level data transfer rate specifications within SI metric workflows, engineering documentation, and technical data sheets.

Learn more about megabits per second in our Data Transfer Converter.

What Is a Kilobytes per Second?

A kilobytes per second is a unit of data transfer rate equal to 8,000 bits per second (bps), the base unit for data transfer rate. Equal to 8,000 bits per second (8 Kbps). [2]

The kilobytes per second is classified as a metric and SI-compatible unit of data transfer rate. Kilobytes per Second can be abbreviated as KB/s; for example, 1 kilobytes per second can be written as 1 KB/s.

In the metric system, "kilo" is the standard SI prefix for thousands, or 10³. This makes the kilobytes per second (KB/s) a convenient decimal multiple of the bits per second (bps).

In practice, kilobytes per second (KB/s) are widely used across large-scale industrial, bulk, and macro-level data transfer rate specifications within SI metric workflows, engineering documentation, and technical data sheets.

Learn more about kilobytes per second in our Data Transfer Converter.

When converting data transfer rate between megabits per second (Mbps) and kilobytes per second (KB/s), keep full floating-point precision (1 Mbps = 125 KB/s; 1 KB/s = 0.008 Mbps) during intermediate calculations and round only the final kilobytes per second figure to match your instrument tolerance.

More Megabits per Second & Kilobytes per Second Conversions

Need to calculate in the opposite direction? Use our kilobytes per second to megabits per second calculator to switch your starting unit immediately. You can also explore related tools such as converting kilobytes per second to megabits per second, converting megabits per second to gigabits per second, or converting megabits per second to megabytes per second.

Convert from Megabits per Second

Convert to Kilobytes per Second

Frequently Asked Questions

There are 125 kilobytes per second (KB/s) in 1 megabits per second (Mbps). Conversely, 1 kilobytes per second (KB/s) is equal to 0.008 megabits per second (Mbps).

Data Transfer Converter

Quick Info

Direct Factor: 1 megabits per second (Mbps) equals 125 kilobytes per second (KB/s).
Inverse Factor: 1 kilobytes per second (KB/s) equals 0.008 megabits per second (Mbps).
Formula: kilobytes per second = megabits per second × 125.
Verified Precision: Anchored to official NIST SP 811 and ISO/IEC 80000 standards.

Units Comparison

Megabits per Second (Mbps)

1,000,000 bits per second.

Kilobytes per Second (KB/s)

Equal to 8,000 bits per second (8 Kbps).

Bits per Second (bps)

Base rate of data transmission.

References

[1]IEC / NIST · IEC 80000-13 Binary & Data Rate Units
Source
[2]BIPM · Decimal Bit-Rate Prefixes
Source
[3]NIST OWM · SI Units — Time & Frequency
Source

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References

NIST · BIPM · ISO

[1]
IEC / NIST (IEC 80000-13 Binary & Data Rate Units)·Data Transfer Metrology Standard — Megabits per Second (Mbps) to Kilobytes per Second (KB/s)
IEC / NIST Standard
[2]
BIPM (Decimal Bit-Rate Prefixes)·Unit Specifications: Megabits per Second (Mbps) & Kilobytes per Second (KB/s)
BIPM Specification
[3]
NIST OWM (SI Units — Time & Frequency)·Conversion Factors & Mathematical Basis (Mbps to KB/s)
NIST OWM Reference

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