Store Math Kit — 10 Automated E-Commerce Calculators

Stop guessing what your store numbers mean.

The OPEN THE STORE ALREADY! Store Math Kit gives you ten editable calculators that do the math for you—so you can price products, plan launch costs, protect your cash, understand profit, and make decisions using real numbers instead of vibes.

What’s inside

• Startup-Budget Calculator — totals your launch expenses, contingency reserve, and funding gap.
• Product-Cost Calculator — calculates the true cost of one order, including fees, shipping, reserves, and packaging.
• Profit-Margin Calculator — calculates profit per order, monthly profit, target pricing, and margin.
• Break-Even Calculator — shows the units and revenue required to cover costs or reach a target profit.
• Dropshipping Order-Cushion Calculator — estimates the cash needed to pay suppliers while customer payouts are processing.
• POD Base-Cost + Shipping Calculator — compares product-level print-on-demand costs, shipping, profit, margin, and maximum ad spend.
• Physical-Inventory Reorder Tracker — calculates reorder points, suggested quantities, days of stock, and cash required.
• Digital-Product Income Planner — creates a 12-month sales, expense, profit, and creation-cost recovery plan.
• Advertising Break-Even Calculator — calculates break-even CPA, CPC, ROAS, target limits, and live campaign profit.
• Monthly Expense + Profit Dashboard — tracks twelve months of revenue, expenses, net profit, margin, orders, and average order value.

Built to be easy

• Yellow cells: enter or select your numbers.
• Mint cells: calculate automatically.
• Includes example data, three-scenario planning, warning signals, charts, instructions, and a final quality-check page.
• Works in Microsoft Excel and can be uploaded into Google Sheets.

Who it’s for

Dropshippers, print-on-demand sellers, physical-inventory brands, digital-product creators, and new ecommerce owners who need practical tools—not another worksheet telling them to “figure out the numbers.”

Your download

You will receive one editable .xlsx workbook with 12 tabs: a Start Here guide, ten automated calculators, and a model-check page.

iPad and iPhone users: open the file in the Microsoft Excel or Google Sheets app to edit the yellow cells. Chat, browser, Files, Canva, and PDF previews are view-only and will not run the calculators.

Please note: This is a digital product; no physical item will be shipped. The workbook is a planning tool and does not guarantee income. Replace all sample fees, taxes, shipping costs, supplier costs, and assumptions with current figures for your own business.

Personal-use license: You may edit and use this workbook for your own business. You may not resell, redistribute, share, upload, or rebrand the workbook or its formulas.