Powerful calculators.
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Fast, accurate tools for ecommerce, shipping, pricing, advertising, and business math. Every calculation runs in your browser — no account, no tracking of your inputs.
Net profit
$40.00
Margin
40%
Revenue
$100.00
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Find the right tool for the job
Six focused areas covering the numbers online sellers deal with every day.
Ecommerce
Calculators for online marketplace sellers — profit, fees, margins, and break-even math for platforms like Amazon, eBay, Etsy, and Shopify.
Explore ecommerceShipping
Tools for estimating shipping costs, dimensional weight, and package math using your own carrier rates — no live carrier API required.
Explore shippingLogistics
Volume, container, and freight calculators for planning shipments, pallets, and cargo space.
Explore logisticsPricing
Markup, margin, discount, and price-point calculators to help set profitable, competitive prices.
Explore pricingAdvertising
ROAS, ACoS, CPC, and break-even advertising calculators for planning and evaluating ad spend.
Explore advertisingBusiness
General business math — VAT/sales tax, break-even, ROI, and everyday finance calculations.
Explore businessPopular calculators
Start with a favorite
The tools sellers reach for most — profit, advertising, shipping, and tax.
Ecommerce Profit Calculator
Calculate net profit, margins, break-even price, and advertising metrics for any ecommerce order. All calculations run in your browser.
Open calculatorROAS Calculator
Work out ROAS, ACoS, CPC, cost per order, conversion rate, and break-even ROAS from your ad spend and revenue. All calculations run in your browser.
Open calculatorShipping Cost Calculator
Find billable weight (actual vs dimensional) and total shipping cost from your own carrier rate. All calculations run in your browser.
Open calculatorSales Tax Calculator
Add tax to a price or extract tax from a tax-inclusive price at your own rate — with per-unit and total figures. Works for sales tax, VAT, and GST.
Open calculatorLanded Cost Calculator
Work out the true landed cost of imported goods — freight, insurance, duty, tax, and fees — as a total and per unit. All calculations run in your browser.
Open calculatorProfit Margin Calculator
Calculate profit margin and markup from cost and price, or find the selling price from a target margin or markup. All calculations run in your browser.
Open calculatorEvery calculator
The full toolkit
All calculators are free, run locally, and show their formulas.
Ecommerce Profit Calculator
Calculate net profit, margins, break-even price, and advertising metrics for any ecommerce order. All calculations run in your browser.
Open calculatorAmazon FBA Profit Calculator
Calculate Amazon FBA net profit, margin, ROI, and break-even price from your price, product cost, and fees. You enter your own Amazon fees — no live data.
Open calculatoreBay Fee Calculator
Calculate eBay final value fees, net profit, margin, ROI, and break-even price from your item price, shipping, and costs. You enter your own eBay fees.
Open calculatorLanded Cost Calculator
Work out the true landed cost of imported goods — freight, insurance, duty, tax, and fees — as a total and per unit. All calculations run in your browser.
Open calculatorShipping Cost Calculator
Find billable weight (actual vs dimensional) and total shipping cost from your own carrier rate. All calculations run in your browser.
Open calculatorCBM Calculator
Calculate total cubic meters (CBM), cubic feet, and container fill from carton dimensions and quantity. All calculations run in your browser.
Open calculatorProfit Margin Calculator
Calculate profit margin and markup from cost and price, or find the selling price from a target margin or markup. All calculations run in your browser.
Open calculatorBreak-even Calculator
Find your break-even point in units and revenue from fixed costs, price, and variable cost — plus the sales needed for a target profit. Runs in your browser.
Open calculatorROAS Calculator
Work out ROAS, ACoS, CPC, cost per order, conversion rate, and break-even ROAS from your ad spend and revenue. All calculations run in your browser.
Open calculatorSales Tax Calculator
Add tax to a price or extract tax from a tax-inclusive price at your own rate — with per-unit and total figures. Works for sales tax, VAT, and GST.
Open calculatorDiscount Calculator
Find the sale price, amount saved, and effective discount from a percentage off, an amount off, or a target sale price — with order totals.
Open calculatorWhy it's different
Built to be trusted
No sign-up walls, no data collection, no black-box math — just tools that respect your time and privacy.
Free, no signup
Every calculator is free and works immediately. No account, no email, no paywall.
Private by design
Your inputs stay in your browser and are never sent to a server or tracked.
Instant results
Results recalculate the moment you type — no submit button, no waiting.
Transparent formulas
Each tool shows exactly how the numbers are calculated. No hidden assumptions.
Ready to run the numbers?
Pick a calculator and get an answer in seconds. Everything works offline of any paid service — your data never leaves your device.