Tools & calculators
Every calculator runs live in your browser with your own numbers — no signup, no black box. Each one links back to the guide that explains its assumptions.
Interactive now
Marketplace Fee Calculator
See what a marketplace actually takes from a sale — referral fee, per-order fee, fulfillment, and estimated net proceeds — before you commit to a price.
Product Profitability Calculator
Model true per-unit and per-order profitability for a SKU, including COGS, fees, ad spend, and returns.
Break-Even ROAS Calculator
Find the minimum ROAS (and maximum ACOS) at which an ad campaign is still profitable, given your margin.
Margin & Markup Calculator
Quickly solve for price, margin, or markup when you know the other variables.
Beginner's Ecommerce Unit Economics Calculator
A simplified first-product profitability check for sellers who haven't launched yet.
Safety Stock & Reorder Point Calculator
Calculate the safety stock and reorder point that protects you from stockouts without overstocking.
Shipping Cost Calculator
Estimate shipping cost by weight, dimensions, zone, and service level.
Landed Cost Calculator
Model true landed cost per unit including freight, duties, and customs fees.
Advertising Budget Calculator
Set a defensible starting ad budget from a revenue goal and target ROAS/TACOS.
Marketplace Comparison Tool
Compare marketplaces side by side on fees, reach, requirements, and competition for your category.
Marketplace Readiness Assessment
Score your readiness to expand to a new marketplace and see your gap list.
Product Opportunity Scorecard
Score a product idea on demand, competition, margin, and compliance complexity.
Supplier Evaluation Scorecard
A structured template for vetting a new supplier before you commit.
Marketplace Expansion Scorecard
Decide which marketplace to add next based on current performance and operational capacity.
Ecommerce Technology Stack Builder
Map your current vs. target technology stack and prioritize what to adopt next.
Account Health Dashboard Template
A downloadable template for proactively monitoring account health metrics across marketplaces.
KPI Dashboard Template
A standardized starter KPI dashboard for ecommerce and marketplace sellers.