Small Business & Ecommerce Calculators
Shopify profit, Amazon FBA fees, ad spend, CPA, customer lifetime value, pricing strategy, and inventory reorder calculators.
7 calculators available
Shopify Profit Calculator
Calculate net profit from your Shopify store after subscription fees, payment processing, product costs, and shipping using 2026 Shopify plan pricing.
Use CalculatorAmazon FBA Fee Calculator
Estimate Amazon FBA fees including referral fees, fulfillment costs, and storage charges per unit using the 2026 fee schedule effective January 15, 2026.
Use CalculatorBreak-Even Ad Spend Calculator
Calculate the maximum cost per acquisition and minimum ROAS needed to break even on paid advertising campaigns.
Use CalculatorCost Per Acquisition Calculator
Calculate and compare CPA across multiple advertising channels to identify your most cost-effective marketing spend.
Use CalculatorCustomer Lifetime Value Calculator
Calculate customer lifetime value (CLV) from order value, purchase frequency, and retention to determine sustainable acquisition budgets.
Use CalculatorPricing Strategy Calculator
Compare cost-plus, target margin, competitive, and value-based pricing strategies side by side to find the optimal price for your product.
Use CalculatorInventory Reorder Point Calculator
Calculate reorder points, safety stock levels, and economic order quantity (EOQ) to prevent stockouts and optimize inventory costs.
Use CalculatorSmall business owners and ecommerce operators make dozens of financial decisions every week. From pricing products on Shopify and Amazon to calculating customer acquisition costs and lifetime value, every number affects profitability. Our small business calculators are designed for online sellers, Shopify store owners, Amazon FBA sellers, and local business operators who need fast, accurate answers to the financial questions that drive their businesses forward.
Why Use Our Small Business & Ecommerce Calculators
Ecommerce profitability calculations involve platform fees, shipping costs, return rates, and advertising spend that generic business calculators ignore. An Amazon FBA seller needs to account for referral fees, fulfillment fees, and storage costs before knowing their true margin. A Shopify store owner needs to factor in payment processing, app subscriptions, and customer acquisition cost. Our tools are built for these specific scenarios with the fee structures and formulas that online sellers actually encounter.
Who Are These Calculators For?
- Shopify store owners analyzing product profitability after all fees
- Amazon FBA sellers calculating true margins including fulfillment costs
- Digital marketers tracking ad spend, CPA, and return on ad spend
- Local small business owners planning pricing and inventory
Key Features
- Shopify profit margin calculations including all platform fees
- Amazon FBA fee breakdown with referral, fulfillment, and storage costs
- Customer lifetime value and acquisition cost analysis
- Inventory reorder point and pricing strategy tools
How to Choose the Right Calculator
Shopify sellers should start with the Shopify Profit Calculator to understand true product margins. Amazon sellers need the FBA Fee Calculator to account for all Amazon costs. For marketing decisions, the Customer Acquisition Cost Calculator and Customer Lifetime Value Calculator help you evaluate ad spend efficiency. The Pricing Strategy Calculator helps set prices that cover all costs and hit target margins.
Frequently Asked Questions
How does the Shopify profit calculator work?
The calculator takes your product cost, selling price, and Shopify plan fees (including payment processing at 2.9% plus $0.30 per transaction for the Basic plan). It calculates your net profit per unit after all platform costs. You can also add shipping costs and ad spend per unit.
What fees does the Amazon FBA calculator include?
The FBA calculator accounts for Amazon referral fees (typically 15%), FBA fulfillment fees based on item size and weight, monthly storage fees, and optional costs like prep services and long-term storage surcharges.
What is a good customer lifetime value to CAC ratio?
A healthy LTV to CAC ratio is generally 3:1 or higher. This means the lifetime value of a customer should be at least three times what you spent to acquire them. Our calculators help you measure both sides of this ratio.
How do I calculate my reorder point?
Reorder point equals your average daily sales multiplied by lead time in days, plus safety stock. Our Inventory Reorder Calculator automates this formula and helps you avoid stockouts without over-ordering.
Disclaimer
Small business and ecommerce calculators provide estimates based on the values and fee structures you enter. Platform fees for Shopify, Amazon, and other services change periodically. Always verify current fee schedules with the platform directly. These tools are for planning and analysis purposes. Consult with a business accountant for comprehensive financial planning.