Ecommerce tools hub
E-Commerce Decision Tools
This hub is for the part of ecommerce where the margin can disappear in shipping, returns, ads, or bad inventory timing. Use it to test whether the unit economics still work after the full cost stack is in view.
Start with CAC, ROAS, LTV, and payback. Then move into pricing, shipping, conversion, and inventory to see whether growth is actually getting healthier or just louder.
Start with the unit economics that matter most
If acquisition is the problem, start with CAC and ROAS. If the store needs time to earn back spend, use payback period and LTV. If margins are being squeezed by fulfillment, the shipping and pricing calculators are the better place to begin.
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 teamFeatured Unit Economics Core
Start With CAC, ROAS, LTV, and Payback
These tools cover customer economics from acquisition through payback and repeat purchase value.
Customer Acquisition Cost Calculator
Measure paid and blended CAC so your growth targets stay profitable.
Calculate paid CAC and customers per $10k in spend from your current campaign numbers.
ROAS Calculator
Track return on ad spend and ad cost share from actual revenue.
Track return on ad spend and ad cost percentage from attributable revenue and ad spend.
Customer LTV Calculator
Estimate lifetime customer value from AOV, frequency, and retention.
Estimate customer lifetime value from order value, purchase frequency, and customer lifespan.
Payback Period Calculator
Measure how many months it takes to recover acquisition cost.
Measure how many months it takes to recover acquisition cost from contribution profit.
Monthly Recurring Revenue Calculator
Track monthly recurring revenue and annual run-rate from subscription activity.
Track recurring revenue, churn, and annual run-rate for subscription offers.
How the growth stack fits together
1. Acquire
Start with CAC and ROAS so you can see whether paid traffic is efficient enough to justify more spend.
2. Recover
Use payback period and LTV to check whether the acquisition cost comes back fast enough for your cash position.
3. Expand
Review MRR, AOV, conversion, returns, and reorder timing to see whether growth is actually compounding.
When growth needs a profit check
Use the marketing ROI calculator when ad spend is increasing and you need to know whether the revenue is actually turning into profit. If the store is subscription-heavy, the churn calculator is the better companion because retention changes the economics more than a single order does.
The full ecommerce cluster
33 tools
Ecommerce Profitability Workbench
Model one order from price, promotion, fulfilment, returns, payment-fee, and CAC assumptions.
Break-Even Calculator
Estimate sales units or revenue needed to cover fixed and variable costs.
Pricing Calculator
Set a defensible price using cost, markup, and target margin assumptions.
Profit Margin Calculator
Model gross and net margin impact before changing pricing or discounts.
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.
Customer LTV Calculator
Use Customer LTV Calculator for a practical, browser-based decision.
LTV:CAC Ratio Calculator
Use LTV:CAC Ratio Calculator for a practical, browser-based decision.
Payback Period Calculator
Use Payback Period Calculator for a practical, browser-based decision.
Marketing ROI Calculator
Compare revenue return with profit-based ROI before scaling spend.
Subscription Churn Calculator
Measure logo churn, revenue churn, and net retention.
Average Order Value Calculator
Use Average Order Value Calculator for a practical, browser-based decision.
Ecommerce Conversion Rate Calculator
Use Ecommerce Conversion Rate Calculator for a practical, browser-based decision.
Cart Abandonment Calculator
Use Cart Abandonment Calculator for a practical, browser-based decision.
Contribution Margin Calculator
Use Contribution Margin Calculator for a practical, browser-based decision.
Net Profit After Fees Calculator
Use Net Profit After Fees Calculator for a practical, browser-based decision.
Return Rate Calculator
Use Return Rate Calculator for a practical, browser-based decision.
Reorder Point Calculator
Use Reorder Point Calculator for a practical, browser-based decision.
Monthly Recurring Revenue Calculator
Use Monthly Recurring Revenue Calculator for a practical, browser-based decision.
Net Revenue Retention Calculator
Net and gross revenue retention from MRR cohort movement.
Max MRR Calculator
Steady-state MRR ceiling from new MRR and cancellation rate.
Rule of 40 Calculator
Score growth plus margin against the Rule of 40 benchmark.
ARPA Calculator
Average revenue per account from MRR and customer count.
Amazon FBA Profit Calculator
Per-unit FBA profit from manual fee inputs (not live Amazon API).
Marketplace Fee Comparison Calculator
Compare net profit across marketplace channels side by side.
Channel Pricing Calculator
List price for a target margin after marketplace fees.
Business Plan Builder
Create a structured business plan with financial projections.
Contract Generator Pro
Organize an educational discussion draft for qualified legal review; not a legal contract.
Invoice Generator Pro
Build a business invoice you can copy or export.
Proposal Generator Pro
Draft a client proposal before moving into time and invoicing.
Dropship Pricing Calculator
Connect product cost, fees, shipping, and margin targets.
Shipping Calculator
Project fulfillment cost so ecommerce pricing stays profitable.
Inventory Tracker
Track stock, reorder points, and inventory value locally.