Browse all calculators
Seller calculators built for real margins
Clear profit, advertising, shipping and inventory calculations for global commerce.
31focused calculators
Versioned rulesSource + date
Private by designYour inputs stay in this browser.
Browse all calculators
31 calculators shownProfit & fees
eBay Profit Calculator
Calculate final value fees, promoted listing cost and order profit.
Profit & fees
Shopify Profit Calculator
Model store profit after payments, products, fulfillment, apps and ads.
Shipping & landed cost
Dimensional Weight Calculator
Compare actual and volumetric weight for parcel billing.
Shipping & landed cost
CBM Calculator
Calculate shipment cubic metres from carton dimensions and quantity.
Shipping & landed cost
Landed Cost Calculator
Estimate duty, import tax and true cost per imported unit.
Inventory & pricing
Reorder Point Calculator
Estimate reorder stock, safety stock and a suggested order quantity.
Profit & fees
Marketplace Profit Calculator
Model multi-order profit with editable marketplace and payment fees.
Profit & fees
Discount Profit Calculator
See how a promotion changes price, profit and maximum safe discount.
Profit & fees
Payment Processing Fee Calculator
Calculate percentage, fixed and effective transaction fees.
Profit & fees
Return Rate Profit Impact Calculator
Estimate how refunds, recovery and handling change period profit.
Profit & fees
Break-even Units Calculator
Find units and revenue needed to cover fixed costs and a profit target.
Profit & fees
VAT Inclusive & Exclusive Calculator
Split VAT-inclusive amounts or add VAT to a net price.
Inventory & pricing
Wholesale Pricing Calculator
Balance retailer margin with supplier profit and order economics.
Advertising
Customer Acquisition Cost Calculator
Compare blended CAC with first-order contribution and customer value.
Advertising
Customer Lifetime Value Calculator
Estimate revenue, gross-profit and net contribution LTV.
Advertising
Marketing Efficiency Ratio Calculator
Measure total revenue efficiency and contribution after advertising.
Advertising
Target ROAS & CPA Calculator
Set an advertising ceiling while preserving a desired profit margin.
Shipping & landed cost
Air Freight Chargeable Weight Calculator
Compare gross and volumetric weight and estimate freight cost.
Shipping & landed cost
Pallet Load Calculator
Estimate cartons per layer, layers, payload and pallet utilization.
Shipping & landed cost
Container Load Calculator
Estimate carton capacity across six orientations and payload limits.
Shipping & landed cost
Shipping Cost Per Unit Calculator
Allocate freight and surcharges across shipped and sellable units.
Inventory & pricing
Economic Order Quantity Calculator
Balance ordering cost with annual inventory holding cost.
Inventory & pricing
Safety Stock Calculator
Estimate buffer inventory from peak demand and lead-time variation.
Inventory & pricing
Inventory Turnover & GMROI Calculator
Measure inventory turns, days held and gross-margin return.
Inventory & pricing
Sell-through Rate Calculator
Track units sold against available stock and reconcile ending inventory.
No matching calculators.
Decision guides
Understand the model behind the result
Practical guides with worked examples, source boundaries and review checklists for the decisions these calculators support.
Marketplace profit after fees: a practical calculation framework
A useful profit calculation is more than sale price minus product cost. This guide shows how to define one order consistently, place each fee in the right layer and reconcile an estimate against a settlement report.
Read guideAdvertising unit economics: ROAS, ACoS, TACoS, CAC and MER
A high ROAS can still lose money, and a lower ROAS can be rational when it acquires profitable repeat customers. This guide builds the economic bridge between media reports and seller cash contribution.
Read guideLanded cost and freight: from supplier quote to sellable unit
Freight quotations and customs entries use different units and valuation rules. This guide shows how to preserve those boundaries and reconcile the estimate after a shipment closes.
Read guideInventory reorder planning: demand, lead time, safety stock and cash
A reorder point answers when to place an order; it does not by itself decide how much to buy. This guide combines timing, quantity and review signals into one practical operating process.
Read guide