Sample Size Calculator
Decide how many items to test using attribute, MUS, or quick risk-based methods aligned with AICPA / ISA 530.
Random Sample Selector
Upload an Excel workbook, draw a reproducible random sample with an optional seed, and export the selection.
Systematic Sampling Tool
Pick every k-th record from an Excel population after a seeded random start. Exports with full methodology.
Stratified Sampling Tool
Stratify by any column and allocate the sample proportionally, equally, or with Neyman optimal allocation.
Systematic Random Sampler
Generate reproducible systematic samples from a numeric range or pasted item list — no spreadsheet needed.
Benford's Law Analyzer
Test the leading-digit distribution of a numeric column for anomalies that may indicate fraud or error.
Results are guidance, not professional advice. Always apply auditor judgment and your firm's methodology.