Free Seller Calculators and Tools for Online Sellers
Calculate margin, markup, ads, discounts, sales targets, shipping weight, SKUs, and listing copy with live visualizers. Your data stays on your device.
Private by design
Seller math, SKUs, CSVs, and listing text stay in your browser.
Advanced uploads
Import text files and bulk CSV rows without adding a backend.
25 tools
Pricing, ads, wholesale, shipping, SKU, and listing workflows.
Visual dashboards
Charts, gauges, progress bars, and package visuals update live.
All seller tools
Profit Margin Calculator
Calculate net profit, margin, markup, and total landed cost from a selling price.
Free toolMarkup Calculator
Find markup percentage and profit added on top of your landed cost.
Free toolSelling Price Calculator
Calculate the selling price needed for a target margin after fees and shipping.
Free toolBreak-even Price Calculator
Find the lowest price that covers product, fees, shipping, and ad cost.
Free toolTarget Profit Calculator
Set a profit goal and calculate the selling price required per unit.
Free toolDiscount Calculator
Calculate final price, savings, and remaining margin after a single discount.
Free toolBulk Discount Calculator
Compare multiple discount tiers against price, savings, and margin.
Free toolWholesale Price Calculator
Price wholesale orders from retail price, margin target, or retailer discount.
Free toolCost Price Calculator
Work backwards from selling price and target margin to find max allowable cost.
Free toolMinimum Selling Price Calculator
Find the floor price that protects a minimum profit per unit.
Free toolROAS Calculator
Calculate return on ad spend from campaign revenue and ad spend.
Free toolACOS Calculator
Calculate advertising cost of sales and compare it with margin.
Free toolCPC Break-even Calculator
Find the maximum CPC you can pay from conversion rate and profit per order.
Free toolAd Spend Profit Calculator
Estimate campaign profit after cost of goods and ad spend.
Free toolRevenue Goal Calculator
Convert a monthly revenue goal into daily sales and order targets.
Free toolMonthly Sales Target Calculator
Plan monthly units, revenue, gross profit, and daily pace.
Free toolUnits Needed to Make Profit Calculator
Calculate units needed to cover fixed costs and reach a profit goal.
Free toolReturn Loss Calculator
Estimate losses from returns, refund fees, shipping, and unsellable stock.
Free toolFree Shipping Profit Calculator
Check whether free shipping still leaves enough margin.
Free toolVolumetric Weight Calculator
Calculate dimensional weight and billable shipping weight.
Free toolSKU Generator
Generate clean SKUs from brand, category, product, variant, color, size, and sequence.
Free toolSKU Formatter
Normalize messy SKUs into consistent separators, casing, and safe characters.
Free toolBulk SKU Generator from CSV
Paste CSV rows and generate SKU values for a catalog in one pass.
Free toolListing Character Counter
Count title, bullets, description, and search terms against common marketplace limits.
Free toolProduct Description Formatter
Turn rough product notes into clean bullets, paragraph copy, or simple HTML.
Browse tool categories
Start with a category page when you want a focused set of pricing, ads, SKU, shipping, or listing tools.