Calculators for Online Sellers
Price with confidence and ship without surprises. Work out markup and margin, check whether your advertising pays for itself, convert carton dimensions into CBM and dimensional weight, build a landed cost that includes duty — and print the customs documents. Free, instant, and computed entirely in your browser.
Pricing & Profit Calculators
Markup Calculator
Turn a unit cost and a markup percentage into a selling price, with the margin it produces.
Profit Margin Calculator
Work out gross margin from cost and selling price, or the price you need for a target margin.
Ecommerce Profit Calculator
One order in, net profit out — product cost, shipping, ads and platform fees all subtracted.
COGS Calculator
Cost of goods sold from opening stock, purchases and closing stock — plus turns and days of inventory.
Advertising & ROAS Calculators
ROAS Calculator
Revenue per ad dollar, the ACoS it implies, and whether the campaign actually made money.
Break-Even ROAS Calculator
The ROAS you must hit to stop losing money, plus the maximum you can pay per acquisition.
CPA Calculator
Cost per acquisition, target CPA from margin, and the break-even point between them.
Shipping & Logistics Calculators
CBM Calculator
Carton volume in cubic metres, total shipment CBM and how many cartons fit in a container.
Dimensional Weight Calculator
Volumetric and billable weight for UPS, FedEx, USPS, DHL and Canada Post divisors.
Air Freight Calculator
Chargeable weight and total air freight cost, with volumetric weight at your carrier's divisor.
Landed Cost Calculator
True cost per unit once goods, freight, duty and handling are spread across the shipment.
Customs Duty Calculator
Import duty and a landed cost per unit at any duty rate, with a sensitivity table.
Platform Profit Calculators
Dropshipping Profit Calculator
Net profit per order after supplier cost, shipping, ads and payment fees.
Amazon FBA Calculator
Amazon referral fee, FBA fulfilment and your net profit per unit.
Etsy Fee Calculator
Etsy transaction, payment and processing fees with the net profit left behind.
Shopify Profit Calculator
Order profit after Shopify payments, product, shipping and ad costs.
Shipping Document Generators
Selling Tools in One Place
COGS Calculator
Cost of goods sold from opening stock, purchases and closing stock — plus turns and days of inventory.
Packing List Generator
Build an export packing list with carton details, weights and totals, then print or save as PDF.
Commercial Invoice Generator
Create a customs-ready commercial invoice with HS codes, values and totals, then print to PDF.
Browse by Category
Profit & Pricing Calculators
Every pricing decision is one of four questions: what should this sell for, what margin does it give me, what did the stock actual…
Shipping & Logistics Calculators
Freight is usually the second-largest cost after the product itself, and it is sold in units nobody quotes at the factory gate: cu…
Guides
Markup vs Margin
The same profit, two percentages — and why mixing them up costs sellers real money.
What Is Landed Cost?
Every cost it takes to get a unit to your warehouse — and why pricing from the invoice fails.
What Is CBM?
Cubic metres, the unit sea freight is sold in — and how to calculate it for any carton.
How to Calculate ROAS
Revenue per ad dollar, the break-even you must clear and the profit left after ads.
How to Fill Out a Commercial Invoice
Every field customs expects, with the values that prevent clearance delays.
How to Reduce Chargebacks
Why disputes happen, the ratio that gets merchants frozen, and the process fixes that cut losses.