Ecommerce Profitability & Ad Scalers
Stop scaling unprofitable advertising campaigns. Model exact break-even ROAS, merchant transaction fees, fulfillment shipping tiers, and customer lifetime value (LTV) curves.
Recommended
Start here
Customer Acquisition Cost Calculator
Use Customer Acquisition Cost Calculator for a practical, browser-based decision.
ROAS Calculator
Use ROAS Calculator for a practical, browser-based decision.
Amazon FBA Profit Calculator
Per-unit FBA profit from manual fee inputs (not live Amazon API).
Dropship Pricing Calculator
Connect product cost, fees, shipping, and margin targets.
How they fit together
A sensible working order
- 01Calculate Break-Even ROAS to establish non-negotiable minimum target return on ad spend.
- 02Model Customer Acquisition Cost (CAC) and Lifetime Value (LTV) to confirm 3:1+ expansion ratios.
- 03Deduct Marketplace (Amazon FBA / Shopify / Etsy) and payment merchant fees from net product margins.
- 04Optimize Packaging & Shipping Tiers to prevent margin erosion during fulfillment.
Ecommerce workflow
Use unit economics before scaling ads, inventory, or pricing changes
This is the strongest commercial niche on the site. The tools help merchants move from basic cost checks into CAC, ROAS, LTV, pricing, margin, and inventory decisions.
Decision path
- 1Start with margin and pricing.
- 2Validate break-even volume and shipping impact.
- 3Use CAC, ROAS, and LTV tools before increasing spend.
Trust standards
- No signup required for core tools
- Browser-first workflows where possible
- Clear examples, assumptions, and next steps
Limits and assumptions
Use these outputs as planning estimates. Confirm any high-impact decision with official lender, tax, legal, or provider documentation before you act.
Need a correction?
If a formula, assumption, or output looks wrong for your use case, send details so we can review and update the page.
Contact editorial teamAll ecommerce & ad tools tools
Client-side · verifiedPricing & fees
6- Pricing CalculatorSet a defensible price using cost, markup, and target margin assumptions.
- Net Profit After Fees CalculatorUse Net Profit After Fees Calculator for a practical, browser-based decision.
- Amazon FBA Profit CalculatorPer-unit FBA profit from manual fee inputs (not live Amazon API).
- Marketplace Fee Comparison CalculatorCompare net profit across marketplace channels side by side.
- Channel Pricing CalculatorList price for a target margin after marketplace fees.
- Dropship Pricing CalculatorConnect product cost, fees, shipping, and margin targets.
Acquisition & marketing
6- Customer Acquisition Cost CalculatorUse Customer Acquisition Cost Calculator for a practical, browser-based decision.
- ROAS CalculatorUse ROAS Calculator for a practical, browser-based decision.
- LTV:CAC Ratio CalculatorUse LTV:CAC Ratio Calculator for a practical, browser-based decision.
- Marketing ROI CalculatorCompare revenue return with profit-based ROI before scaling spend.
- Ecommerce Conversion Rate CalculatorUse Ecommerce Conversion Rate Calculator for a practical, browser-based decision.
- Cart Abandonment CalculatorUse Cart Abandonment Calculator for a practical, browser-based decision.
Recurring revenue
9- Customer LTV CalculatorUse Customer LTV Calculator for a practical, browser-based decision.
- LTV:CAC Ratio CalculatorUse LTV:CAC Ratio Calculator for a practical, browser-based decision.
- Payback Period CalculatorUse Payback Period Calculator for a practical, browser-based decision.
- Subscription Churn CalculatorMeasure logo churn, revenue churn, and net retention.
- Monthly Recurring Revenue CalculatorUse Monthly Recurring Revenue Calculator for a practical, browser-based decision.
- Net Revenue Retention CalculatorNet and gross revenue retention from MRR cohort movement.
- Max MRR CalculatorSteady-state MRR ceiling from new MRR and cancellation rate.
- Rule of 40 CalculatorScore growth plus margin against the Rule of 40 benchmark.
- ARPA CalculatorAverage revenue per account from MRR and customer count.
Operations & inventory
4- Return Rate CalculatorUse Return Rate Calculator for a practical, browser-based decision.
- Reorder Point CalculatorUse Reorder Point Calculator for a practical, browser-based decision.
- Shipping CalculatorProject fulfillment cost so ecommerce pricing stays profitable.
- Inventory TrackerTrack stock, reorder points, and inventory value locally.
Everything else
9- Ecommerce Profitability WorkbenchModel one order from price, promotion, fulfilment, returns, payment-fee, and CAC assumptions.
- Break-Even CalculatorEstimate sales units or revenue needed to cover fixed and variable costs.
- Profit Margin CalculatorModel gross and net margin impact before changing pricing or discounts.
- Average Order Value CalculatorUse Average Order Value Calculator for a practical, browser-based decision.
- Contribution Margin CalculatorUse Contribution Margin Calculator for a practical, browser-based decision.
- Business Plan BuilderCreate a structured business plan with financial projections.
- Contract Generator ProOrganize an educational discussion draft for qualified legal review; not a legal contract.
- Invoice Generator ProBuild a business invoice you can copy or export.
- Proposal Generator ProDraft a client proposal before moving into time and invoicing.
Ecommerce & Ad Tools — questions
How do these ecommerce calculators account for changing platform fees?
Our calculators include customizable referral fee, fulfillment, storage, and ad spend fields so you can update assumptions based on current Amazon, Shopify, or eBay rate cards.
Why is target ROAS different from breakeven ROAS?
Breakeven ROAS is the minimum return required to not lose money (1 / Gross Margin). Target ROAS factors in your desired net profit margin after advertising costs.
Can I model multi-channel selling profitability side-by-side?
Yes. Use our Marketplace Fee Comparison Calculator to contrast net margins across Amazon FBA, Etsy, and eBay simultaneously.
Where can I find formula definitions for advertising metrics?
Full mathematical definitions for ROAS, CAC, POAS, and Blended CPA are documented on our Methodology page.