Random Number Validator

Test the quality of your random number sequences using the NIST Statistical Test Suite (SP 800-22)

Enter your random numbers:

Positive integers (commas, spaces, or newlines) or base64 • Generate test data

0 numbers (0 bits)

Too Small

📝 Input Format:

Numbers (e.g., 3,156,202,3,65,4) Base64 (e.g., SGVsbG8gV29ybGQ=)

Base64 format extracts bits directly from decoded bytes

🔧 Bit Conversion Strategy:

Custom Range (Base Conversion)

For RNGs with specific ranges (e.g., 1-100, dice rolls)

Min:

Max:

Fixed Bit-Width

For numbers starting at 0 (standard bit widths)

8-bit 0-255 16-bit 0-65,535 32-bit 0-4B+

📊 Test Coverage Tiers

Too Small

0-2 numbers · No NIST tests

Tier 1: Minimal

3-30 numbers · Basic tests (5 tests)

Tier 2: Light

31-312 numbers · Block + Template tests (~10 tests)

Tier 3: Standard

313-3,124 numbers · Most NIST tests (~15 tests)

Tier 4: Full

3,125-31,249 numbers · Complete suite (40+ tests)

Tier 5: Comprehensive

31,250+ numbers · Optimal reliability

Running comprehensive NIST statistical analysis...

This may take a few seconds

Quality Score:

Analysis:

NIST Test Results: