All calculators
High-commercial-intent tools, each with a full breakdown and a plain-English guide. Free, instant, no signup.
Seller fees
What each marketplace and payment processor really takes from a sale.
Marketplace Fee Comparison Calculator
Every platform compared on the same order.
Open calculatoreBay Fee Calculator
Your true profit after every eBay fee.
Open calculatorPayPal Fee Calculator
How much PayPal takes, and what you keep.
Open calculatorEtsy Fee Calculator
Your true profit after every Etsy fee.
Open calculatorAmazon FBA Profit Calculator
Margin and ROI after FBA + referral fees.
Open calculatorShopify Fee Calculator
Your real profit after every Shopify fee.
Open calculatorStripe Fee Calculator
Card fees, cross-border costs, and net payout.
Open calculatorTikTok Shop Fee Calculator
Your true profit after TikTok Shop fees.
Open calculatorWalmart Marketplace Fee Calculator
Your true profit after Walmart referral fees.
Open calculatorPoshmark Fee Calculator
Your true profit after Poshmark fees.
Open calculatorProfit & pricing
Margin, landed cost, discounts and the numbers behind a pricing decision.
Profit Margin Calculator
Profit, margin, and markup from cost and price.
Open calculatorDiscount Margin Calculator
What a sale price really does to your profit.
Open calculatorAmazon ROI Calculator
Return on the cash you put into inventory.
Open calculatorLanded Cost Calculator
True per-unit cost after freight and duty.
Open calculatorBreak-Even Calculator
Units and revenue needed to break even.
Open calculatorRestocking Fee Calculator
What a return actually refunds you.
Open calculatorMarketing metrics
The advertising funnel end to end, impressions through to lifetime value.
ROAS Calculator
Return on ad spend, and the profit behind it.
Open calculatorBreakeven ROAS Calculator
The ROAS your ads need just to break even.
Open calculatorCPA Calculator
Cost per acquisition, and the most you can afford.
Open calculatorCPC Calculator
Cost per click, and your maximum bid.
Open calculatorCPM Calculator
Cost per thousand impressions.
Open calculatorCTR Calculator
Click-through rate and what a lift is worth.
Open calculatorConversion Rate Calculator
Conversion rate and the revenue a lift unlocks.
Open calculatorCAC Calculator
What a new customer really costs you.
Open calculatorLTV Calculator
Lifetime value and your LTV:CAC ratio.
Open calculatorLoans & mortgage
Monthly payments, total interest and how much faster you could be debt-free.
Mortgage Calculator
Monthly payment, interest, and amortization.
Open calculatorRefinance Calculator
Monthly savings and refinance break-even point.
Open calculatorAuto Loan Calculator
Monthly car payment, interest, and total cost.
Open calculatorLoan Payoff Calculator
Payoff time and interest saved with extra payments.
Open calculatorCredit Card Payoff Calculator
Payoff time and interest on your card balance.
Open calculatorSaving & investing
How money grows over time, and what it takes to hit a target.
Compound Interest Calculator
How your money grows with compounding.
Open calculatorInvestment ROI Calculator
Total ROI and annualized return on an investment.
Open calculatorRetirement Calculator
Project your 401(k) balance at retirement.
Open calculatorSavings Goal Calculator
Time to reach your savings goal.
Open calculatorPay & taxes
Take-home pay, freelance rates, and the tax that comes off the top.
Take-Home Pay Calculator
Your real paycheck after taxes.
Open calculatorSalary to Hourly Calculator
Convert annual salary to hourly pay.
Open calculatorFreelance Rate Calculator
The hourly rate your income goal really needs.
Open calculatorSelf-Employment Tax Calculator
The 15.3% SE tax on your freelance income.
Open calculatorWise vs PayPal vs Payoneer Calculator
Which payout service actually keeps you the most.
Open calculatorSales Tax Calculator
Add sales tax to any amount.
Open calculatorVAT Calculator
Add or remove VAT at any rate.
Open calculatorPercentage Calculator
Percentage of an amount, plus increase/decrease.
Open calculator