Formula
- Use the units shown beside each field.
- Results update automatically whenever you change an input.
- Displayed values use up to four decimal places, or scientific notation for very small or large numbers. Calculations use standard floating-point arithmetic; exact integer and fraction tools identify their own precision rules.
- Each digest is individually byte-aligned. Excludes separators, metadata, database overhead and checksums.
Example Calculation
- Digest bit length: 256
- Digest count: 1000000
One million 256-bit digests require 32 MB as raw bytes or 64 MB as ASCII hexadecimal.
Frequently asked questions
How do I use this calculator?
Enter digest bit length, digest count. The result updates automatically. Use Reset to restore the example values.
What method does it use?
raw bytes=ceil(bits/8) × count; hex characters=ceil(bits/4) × count.. Each digest is individually byte-aligned. Excludes separators, metadata, database overhead and checksums.
Why might a rounded result differ?
The calculation keeps full numeric precision internally, then rounds the displayed result. Rounding intermediate steps by hand can produce a slightly different answer.
Are my inputs saved online?
No. This calculator processes your inputs in your browser. A recently used list stores only calculator names on this device, not your entered values.
Check the assumptions and units before using this result. Read about calculation methods.