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ads-math

// PPC financial calculator and modeling tool. CPA, ROAS, CPL calculations, break-even analysis, impression share opportunity sizing, budget forecasting, LTV:CAC ratio analysis, and MER (Marketing Efficiency Ratio) assessment. Requires zero API access. Works with pasted data from exports. Use when user says PPC math, ad calculator, break-even, budget forecast, ROAS calculator, CPA calculator, impression share, LTV CAC, or MER.

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stars:4.9Kforks:763updated:May 17, 2026 at 07:55
SKILL.md
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nameads-math
descriptionPPC financial calculator and modeling tool. CPA, ROAS, CPL calculations, break-even analysis, impression share opportunity sizing, budget forecasting, LTV:CAC ratio analysis, and MER (Marketing Efficiency Ratio) assessment. Requires zero API access. Works with pasted data from exports. Use when user says PPC math, ad calculator, break-even, budget forecast, ROAS calculator, CPA calculator, impression share, LTV CAC, or MER.

name: ads-math description: "Calculate and model paid-media CPA, CPL, CPC, CPM, ROAS, MER, break-even targets, contribution margin, LTV:CAC, impression-share opportunity, budgets, forecasts, and experiment economics. Use for PPC math, ad calculator, break-even analysis, ROAS calculator, CPA calculator, budget forecast, LTV CAC, or MER."

Paid Media Financial Model

  1. Identify the decision and collect units, currency, period, tax/refund treatment, margin, attribution basis, and uncertainty.
  2. Show the formula and map every input to an operator value or cited artifact.
  3. Validate denominators, sign, missing values, incompatible windows, and unit conversions.
  4. Calculate base, downside, and upside cases where uncertainty affects the decision.
  5. Keep platform-attributed revenue, blended business revenue, cash flow, and contribution margin distinct.
  6. Return machine-readable inputs, formulas, outputs, sensitivities, and decision implications.

Never fabricate missing financial inputs, hide division-by-zero, or present a point forecast without its assumptions.