10 free calculators for store owners.
Fees, margins, break-even, reorder points and more. They run in your browser, cost nothing and need no signup.
Shopify Fee Calculator
See what Shopify really costs per month: plan price, card fees, third-party gateway fees, effective rate and the cheapest plan for your sales.
Open the calculator →Shopify Plan Recommender
Enter monthly revenue and orders to compare Shopify Basic, Grow and Advanced including transaction fees, and see which plan costs you the least.
Open the calculator →Ecommerce Profit Margin Calculator
Work out profit per order, net margin, markup and break-even ROAS from your product cost, price, shipping, payment fees and ad spend per order.
Open the calculator →Break-Even Calculator
Find how many units and how much revenue you need each month to cover your fixed costs, with a simple chart of revenue against total cost.
Open the calculator →Reorder Point Calculator
Calculate your reorder point from daily sales, supplier lead time and safety stock, and see how many days of cover your current stock gives you.
Open the calculator →Safety Stock Calculator
Calculate safety stock and reorder point from demand and lead-time variation at a 90, 95, 98 or 99 percent service level. Free, instant, no sign-up.
Open the calculator →Inventory Turnover Calculator
Calculate inventory turnover and days inventory outstanding from your cost of goods sold and average inventory, with a retail benchmark for comparison.
Open the calculator →Markdown and Discount Calculator
See your sale price, margin at the discount and how many extra units you must sell to earn the same profit as before. Free markdown calculator.
Open the calculator →Abandoned Cart Recovery Calculator
Estimate the revenue your store loses to abandoned carts each month and how much you could win back with recovery emails, from your own traffic numbers.
Open the calculator →UTM Builder for Shopify
Build tracked UTM links for Shopify email, SMS, Meta, Google, TikTok and influencer campaigns, with presets, link validation and a copy button.
Open the calculator →Want the numbers handled for you?
Our Shopify apps cover invoices, low-stock alerts, forecasts, purchase orders and AI visibility.