1 kilobyte equals 8000 bits. To convert kilobytes to bits, multiply the kilobyte value by 8000. For quick reference: 1 kB = 8000 bit, 5 kB = 40000 bit, 10 kB = 80000 bit, 100 kB = 800000 bit.
FormulaBits = Kilobytes × 8000
Quick
How to convert kilobytes to bits
1
Take your value
Start with your value in kilobytes.
2
Multiply by 8000
Multiply the kilobyte value by 8000. This is the exact conversion factor from kilobytes to bits.
3
Read the result
The product is your value in bits. For example, 5 kB × 8000 = 40000 bit.
Conversion formula
The exact factor from kilobytes to bits is 8000.
Bits = Kilobytes × 8000
Kilobytes to Bits conversion table
Fifty common reference values, hand-picked for skim utility. Use the calculator above for any value not listed.
Conversion table from kilobytes to bits
Kilobytes (kB)
Bits (bit)
1 kB
8000 bit
8 kB
64000 bit
16 kB
128000 bit
64 kB
512000 bit
100 kB
800000 bit
256 kB
2048000 bit
500 kB
4000000 bit
512 kB
4096000 bit
1000 kB
8000000 bit
1024 kB
8192000 bit
2000 kB
16000000 bit
2048 kB
16384000 bit
4096 kB
32768000 bit
5000 kB
40000000 bit
8192 kB
65536000 bit
10000 kB
80000000 bit
16384 kB
131072000 bit
25000 kB
200000000 bit
32768 kB
262144000 bit
50000 kB
400000000 bit
65536 kB
524288000 bit
100000 kB
800000000 bit
131072 kB
1048576000 bit
250000 kB
2000000000 bit
500000 kB
4000000000 bit
524288 kB
4194304000 bit
1000000 kB
8000000000 bit
1048576 kB
8388608000 bit
2000000 kB
16000000000 bit
5000000 kB
40000000000 bit
10000000 kB
80000000000 bit
50000000 kB
400000000000 bit
100000000 kB
800000000000 bit
500000000 kB
4000000000000 bit
1000000000 kB
8000000000000 bit
2000000000 kB
16000000000000 bit
5000000000 kB
40000000000000 bit
10000000000 kB
80000000000000 bit
50000000000 kB
400000000000000 bit
100000000000 kB
800000000000000 bit
500000000000 kB
4.0000 × 10^15 bit
1000000000000 kB
8.0000 × 10^15 bit
2000000000000 kB
1.6000 × 10^16 bit
5000000000000 kB
4.0000 × 10^16 bit
10000000000000 kB
8.0000 × 10^16 bit
100000000000000 kB
8.0000 × 10^17 bit
1000000000000000 kB
8.0000 × 10^18 bit
10000000000000000 kB
8.0000 × 10^19 bit
100000000000000000 kB
8.0000 × 10^20 bit
1000000000000000000 kB
8.0000 × 10^21 bit
Real-world reference
A short text email is around 5–10 kB. A typical web font weight is 30–50 kB. In bits, that gives you: 1 kB = 8000 bit, 10 kB = 80000 bit, 100 kB = 800000 bit.
Frequently asked questions
How many bits are in 1 kilobyte?
1 kilobyte equals 8000 bits.
How do I convert kilobytes to bits?
Multiply the kilobyte value by 8000. So x kB × 8000 = the equivalent in bit.
What is 5 kilobytes in bits?
5 kilobytes equals 40000 bits.
What is 10 kilobytes in bits?
10 kilobytes equals 80000 bits.
What is 100 kilobytes in bits?
100 kilobytes equals 800000 bits.
How do I convert back from bits to kilobytes?
Multiply the bit value by 0.000125. For example, 1 bit = 0.000125 kB.
Is the kilobyte bigger than the bit?
Yes. 1 kilobyte is larger than 1 bit — specifically 8000 times larger.
Are these conversion factors exact?
Yes. The factor of 8000 is derived directly from the SI definitions of kilobyte and bit.
About the kilobyte and the bit
The kilobyte
The kilobyte (kB) equals exactly 1,000 bytes in the SI/IEC decimal convention. Most modern OS file managers and storage-vendor marketing use this definition. Older operating systems (Windows up to Vista) used 1 kB = 1,024 B — that value is now strictly called the kibibyte (KiB).
The bit
A bit is the smallest unit of digital information — a single 0 or 1. Eight bits make one byte. The bit is the natural unit for bandwidth (most network speeds are quoted in bits per second, not bytes).