// multi-utility computation suite · offline · instant · precise
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│ computation suite │
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sci.AES-block-cipher-rounds Calculator
Calculates the number of AES cipher rounds Nr and key schedule expansion from key length (128/192/256-bit inputs give Nr = 10/12/14). AES-256 is the current NIST standard for classified data — it has never been broken; all practical attacks target key management, not the cipher itself.
Inputs
Key Bits
Reference formula or conversion factor shown for context.
Block Size Bits
Reference formula or conversion factor shown for context.
Plaintext Blocks
Reference formula or conversion factor shown for context.
Results
number of rounds Nr
Sample size or count used in the calculation.
key expansion words Nk
Sample size or count used in the calculation.
data volume (KB)
The computed three-dimensional volume.
approximate CPU cycles
The value at the specified point or condition.
AES-256 Nr=14 (FIPS 197)
Sample size or count used in the calculation.
security
Reference formula or conversion factor shown for context.