Business

Two-proportion z-test sample size with days-to-run estimate.

p-value + 95% CI + ship/no-ship verdict for finished A/B tests.

Find your break-even point in units and revenue — essential for pricing, planning and startup financial decisions.

Fixed costs ÷ contribution margin — and margin-of-safety risk frame.

Sole Prop vs LLC vs S-Corp vs C-Corp side-by-side with QBI + SE tax math.

Amortization + DSCR check — the math lenders use on every business loan application.

Multi-step funnel with worst-step flagged — CRO leverage finder.

Markup ↔ Margin conversion + cost-plus / margin-target pricing math.

%Promoters − %Detractors. Plus industry benchmarks + 95% CI.

The 1.25-1.45× multiplier most hiring managers underestimate.

Calculate gross profit, net profit and markup percentage — essential for pricing and business decisions.

Three-point estimation with 68/95/99% confidence intervals.

Channel ROAS + blended MER + break-even ROAS + POAS in one view.

8-test SBA pre-qualification screen for 7(a), 504, Express.

SDE × industry multiple with qualitative adjustments. Low / mid / high range.

Velocity-based release forecast with best/likely/worst ranges.

Daily clock-in/out → weekly hours + FLSA-style overtime split.