Megabits to Kilobytes
Convert Megabits to Kilobytes instantly. Free online digital storage unit converter with exact formula, conversion table and FAQ.
Reserved for a responsive leaderboard above the conversion details.
Professional calculator style
World-scale conversion engine
30+ categories
6,500+ units
Instant results
Offline ready
Converter
Length Converter
Convert metric, imperial, and nautical distance units.
Context values
Some unit families need one extra value for a physically accurate result.
Use the converter to see the formula.
Results update instantly for Megabits to Kilobytes conversions.
Reserved above the conversion cards and below the converter.
Formula
KB = Mb × 125
Mb = KB ÷ 125
Conversion table
| 1 Mb | 125 KB |
| 5 Mb | 625 KB |
| 10 Mb | 1,250 KB |
| 20 Mb | 2,500 KB |
| 50 Mb | 6,250 KB |
| 100 Mb | 12,500 KB |
| 500 Mb | 62,500 KB |
| 1000 Mb | 125,000 KB |
Related conversions
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
What is the source unit in this conversion?
The source unit is the megabit (Mb), a decimal (SI) unit of digital storage equal to 1,000,000 bits.
What is the destination unit in this conversion?
The destination unit is the kilobyte (KB), a decimal (SI) unit of digital storage equal to 1,000 bytes, or 8,000 bits.
How do I convert megabits to kilobytes?
Multiply the megabit value by 125 to get kilobytes. For example, 4 Mb × 125 = 500 KB.
Is the megabit to kilobyte conversion exact?
It's exact under the decimal (SI) definitions used here, where each decimal storage prefix is a fixed factor of 1,000 from the next (and bytes are a fixed factor of 8 from bits).
Where is this conversion commonly used?
It's used for describing file sizes, storage drive capacity, RAM, network bandwidth, and internet data plans or downloads.
Can I convert kilobytes back to megabits?
Yes. Divide the kilobyte value by 125 to get megabits.
Reserved between the FAQ and the article so the page stays balanced.
About this conversion
This page converts megabits (Mb), a decimal (SI) unit of digital storage equal to 1,000,000 bits, into kilobytes (KB), a decimal (SI) unit of digital storage equal to 1,000 bytes, or 8,000 bits.
This conversion is used constantly when checking file sizes, storage drive and memory capacity, network bandwidth, and mobile or broadband data plan allowances.
The formula is KB = Mb × 125, based on the fixed relationship between these two digital storage units.
It's exact under the decimal (SI) definitions used here, where each decimal storage prefix is a fixed factor of 1,000 from the next (and bytes are a fixed factor of 8 from bits).
Digital storage prefixes follow the International System of Units (SI) for decimal units and the International Electrotechnical Commission (IEC) recommendations for binary units, keeping decimal and binary quantities unambiguous.