Kilobits to Megabits
Type a value in either box to convert between kilobits and megabits. The factor is 0.001.
| Kilobits | Megabits |
|---|---|
| 1 Kb | 0.001 Mb |
| 2 Kb | 0.002 Mb |
| 3 Kb | 0.003 Mb |
| 5 Kb | 0.005 Mb |
| 10 Kb | 0.01 Mb |
| 25 Kb | 0.025 Mb |
| 50 Kb | 0.05 Mb |
| 100 Kb | 0.1 Mb |
How to use
- Enter a value in the Kilobits field.
- The Megabits figure appears immediately — no button to press.
- Typing in the Megabits field converts back to Kilobits the same way.
- Use the reference table for the values that come up most often.
Kilobits to Megabits formula
The factor from kilobits to megabits is 0.001.
Mb = Kb × 0.001
Put another way, one kilobit is exactly 1/1,000 of a megabit.
Why this factor: the kilobit and the megabit are both defined against the byte, so dividing one definition by the other gives 0.001 directly. Both definitions are set out in full below.
To go the other way, divide by 0.001 — or use the Megabits to Kilobits converter, which is the same calculation reversed.
Worked example
Given 500 Kb, multiplying by 0.001 yields 0.5 Mb.
500 Kb × 0.001 = 0.5 Mb
The converter above does this for any value you type, in either direction.
What is a kilobit?
A kilobit is 1,000 bits, used almost exclusively for data rates.
Definition: Exactly 1,000 bits, so exactly 125 bytes.
Where it is used: Audio and video bitrates, and legacy connection speeds.
What is a megabit?
A megabit is one million bits — the unit internet speeds are advertised in.
Definition: Exactly 1,000,000 bits, so exactly 125,000 bytes.
Where it is used: Broadband speed tiers and video streaming bitrates, quoted as Mb/s or Mbps.
Worth knowing: Divide advertised megabits per second by 8 to get the megabytes per second a download will actually show.
Kilobits vs Megabits
The kilobit and the megabit belong to the same family of units, so converting between them is usually a matter of shifting a decimal point or applying a small whole-number factor.
Frequently asked questions
How many megabits are in a kilobit?
One kilobit equals 0.001 megabits.
What is the formula to convert kilobits to megabits?
Multiply the number of kilobits by 0.001. To reverse it, divide by 0.001 instead.
How do I convert megabits back to kilobits?
Divide by 0.001, which is the same as multiplying by 1000.
How many megabits are in 10 kilobits?
10 Kb works out to 0.01 Mb.
Is there anything to watch out for with megabits?
Divide advertised megabits per second by 8 to get the megabytes per second a download will actually show.
How is the kilobit defined?
Exactly 1,000 bits, so exactly 125 bytes.