Free ecommerce calculators

The numbers we check first on every Shopify store: what each order keeps, what ads can afford, and what a customer is worth. Free, no sign-up.

• Gross Margin CalculatorThis gross margin calculator shows the share of each sale you keep after paying for the product, plus the profit per unit and the markup that goes with it.
• Markup CalculatorThis markup calculator turns a product cost and a markup percentage into a selling price, and shows the gross profit and gross margin that price gives you.
• COGS CalculatorThis COGS calculator works out the cost of the goods you actually sold in a period, from your opening inventory, what you bought and what was left at the end.
• Inventory Turnover CalculatorThis inventory turnover calculator shows how many times you sold through your average stock in a period, and how many days of stock you're holding.
• Contribution Margin CalculatorThis contribution margin calculator shows what one order leaves you after the product, shipping, payment fees and discounts, in dollars and as a share of the order.
• Break-Even ROAS CalculatorThis break-even ROAS calculator finds the return on ad spend at which an ad-driven order neither makes nor loses money, plus the most you can pay in ads per order.
• ROAS CalculatorThis ROAS calculator divides the revenue your ads brought in by what you spent on them, then uses your contribution margin to show whether that spend actually made money.
• Customer Acquisition Cost CalculatorThis customer acquisition cost calculator divides what you spent winning customers by the number of new customers you won.
• Customer Lifetime Value CalculatorThis customer lifetime value calculator shows how much revenue and contribution margin an average customer brings in over their whole relationship with your store, and compares it with what you pay to acquire them.
• Customer Retention Rate CalculatorThis customer retention rate calculator shows what share of the customers you had at the start of a period you still had at the end, leaving out the new ones you won along the way.
• Shopify Profit CalculatorThis Shopify profit calculator takes a month of revenue and subtracts every major cost, from product and shipping to payment fees, ads and apps, to show what your store actually keeps.
• Shopify Fee CalculatorThis Shopify fee calculator adds up what Shopify itself charges you in a month: the plan, the card processing on Shopify Payments, and the transaction fee on any sales that go through another payment provider.