bytes to bits | Exact Decimal + Formula
1 Byte = 8 Bit
One byte equals exactly 8 bits — a fixed ratio you can memorize. Real-world use: file sizes, memory capacity, and storage specifications. This page expresses those values in bits, which is used for network speeds (bits per second) and low-level digital communication. Enter any value above — the result updates instantly, and a 1–1000 reference table follows below.
About Byte and Bit
Byte (B)
A byte is 8 bits, the standard unit for file sizes.
Where it's used: File sizes, memory capacity, and storage specifications.
Bit (b)
A bit is the smallest unit of digital information — a single 0 or 1.
Where it's used: Network speeds (bits per second) and low-level digital communication.
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Data Storage Converter
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Formula
b = B × 8
To convert Byte to Bit, use the formula displayed above.
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Byte to Bit: Quick Reference Table
| Byte | Bit (Decimal) | Fraction |
|---|---|---|
| 0.001 B | 0.008 b | - |
| 0.01 B | 0.08 b | - |
| 0.1 B | 0.8 b | - |
| 0.5 B | 4 b | - |
| 1 B | 8 b | - |
| 2 B | 16 b | - |
| 5 B | 40 b | - |
| 10 B | 80 b | - |
| 25 B | 200 b | - |
| 50 B | 400 b | - |
| 100 B | 800 b | - |
| 250 B | 2000 b | - |
| 500 B | 4000 b | - |
| 1000 B | 8000 b | - |
B to b Formula and Examples
Direct Formula
b = B × 8 Inverse Formula
B = b × 0.125 Mental Math Shortcut
Multiply the value by roughly 8 to calculate the equivalent amount in your head.
Common Byte to Bit Calculations
- 5 B = 40 b
- 10 B = 80 b
- 50 B = 400 b
- 100 B = 800 b
- 500 B = 4000 b
Precision & Practical Use
For example, 10 B = 80 b — roughly multiple unit increments.
Storage is sold in decimal units (1 GB = 1,000,000,000 bytes) but operating systems may report binary units (GiB). Our converter uses the decimal convention used by drive makers.
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How to Convert Byte to Bit
How many bits are in one byte?
One Byte (B) equals 8 Bit (b). To convert bytes to bits, multiply the byte value by 8.
How do I convert Byte to Bit?
Multiply your byte value by 8 to get the result in Bit: b = B × 8. For example, 5 B = 40 b.
What is the formula for converting B to b?
The conversion formula is b = B × 8. Use the calculator above for any value, and see the reference table below for common inputs from 0.001 to 1000.
Is there a quick mental estimate for B to b?
Multiply the value by roughly 8 to calculate the equivalent amount in your head.
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