Ecommerce Calculators
Last updated: October 2026
Email Marketing ROI Calculator
Estimates the ROI of an email campaign by modeling the full conversion funnel from sends through to revenue.
Currency Exchange Fee Calculator
How much foreign currency you actually receive after the exchange-rate markup (spread), a fixed transaction fee and a foreign ATM fee, and what those fees cost you in your own currency.
Conversion Rate Calculator
Calculate a conversion rate: the percentage of visitors who bought, signed up or completed another goal.
Sales Tax Calculator
Calculate the sales tax owed on an ecommerce purchase given the pre-tax order amount and the applicable tax rate.
Average Order Value Calculator
Calculate average order value (AOV) by dividing total revenue by total orders for a period.
Shipping Cost Calculator
Estimate a baseline shipping cost from package weight, shipping distance, and a per-unit rate using the simplest multiplicative model.
Discount Percentage Calculator
Work out what percentage discount you are actually getting when a retailer advertises a dollar saving rather than a percentage off.
Amazon FBA Profit Calculator
Work out your profit per unit, margin and ROI on an Amazon FBA product from the price, your landed cost, the referral fee and the FBA fulfillment fee from Amazon's rate card.
Markup Calculator
Turn a unit cost and a markup percentage into a selling price, and see the profit and the gross margin that markup gives you.
Product View to Sales Conversion Calculator
Calculate what percentage of product page views result in an actual purchase.
Payment Processing Fees Calculator
Instantly calculate how much a payment gateway like Stripe or PayPal will charge per transaction.
ROAS & Break-Even ROAS Calculator
Measure whether an ad campaign is profitable by comparing its return on ad spend to the break-even ROAS implied by your gross margin and platform fees, in a single profitability multiple.
Break Even Point Calculator
Find how many units you must sell, or how much revenue you need, to cover fixed and variable costs.
Click-Through Rate Calculator
Calculate click-through rate (CTR): the percentage of impressions that produced a click, for search ads, display and social ads, email links and organic search results.