Compare text similarity using cosine, Jaccard, and Levenshtein with duplicate detection threshold.

Calculate gross, operating, and net profit margins from revenue and cost components.

Calculate F1, F-beta, macro, micro, and weighted average scores for classification evaluation.

Convert colors between HEX, RGB, HSL, HSV, and CMYK — with WCAG contrast ratio check.

Detect hot hand fallacy in performance attribution data

Rank and compare poker hands with probability calculations

Adjust historical US dollar amounts for inflation using BLS CPI data (1980-2024).

Calculate NPS score, classify responses, and benchmark against industry standards.

Calculate bond yield to maturity, duration, convexity, and price from yield.

Calculate moon phase for any date — 8 phases with illumination percentage and emoji.

Calculate bundle prices, savings, margins, and attractiveness from individual item prices.

Count working days between dates, add N business days, with 2024-2025 US holiday exclusions.

Split bills and tips — equal split or per-person by order amount — with rounding suggestions.

Macronutrient guide (protein/carbs/fat/fiber) and 5 key vitamins with RDAs and sources.

WHOIS registration data for any domain including registrar and dates

Calculate quick ratio (acid test) excluding inventory and prepaid for conservative liquidity.

Detect prompt injection — instruction override, role hijack, jailbreaks, delimiter injection, and extraction attacks.

Calculate and analyze Unix file permissions — octal to symbolic, security risk detection, and permission comparison.

Calculate Customer Lifetime Value from ARPU, churn rate, margin, and discount rate.

Auto-tag support tickets with labels, priority, and team routing from title and body.