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Measured product data across 20 Amazon marketplaces
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Free Amazon, Walmart, Etsy, TikTok Shop, Trendyol & Turkish Marketplace Seller Tools — No Signup

SellerNiche publishes 27 free seller calculators that need no account, no card and no trial. They cover Amazon FBA and FBM fees, ROI and break-even, Walmart WFS, Etsy, TikTok Shop, Trendyol and the 5 Turkish marketplaces' commissions (n11, Hepsiburada, ÇiçekSepeti, Pazarama, PTTAVM), landed cost and freight, returns, storage and PPC budgets. Paid plans add live marketplace data, but these 27 stay free.

Profit & operations 8

FBA Profit & ROI CalculatorNet margin and ROI from FBA fees, COGS and selling price.Marketplace Commission CalculatorReferral commission and net proceeds across marketplaces.FBA Storage Fee CalculatorMonthly and yearly FBA storage cost from dimensions and unit count.Return Cost CalculatorMonthly loss and revenue share from your return rate.FBA vs FBM CalculatorPer-unit net profit of both fulfilment models, side by side.Revenue Goal CalculatorTurn a monthly revenue OR profit goal into the daily unit sales it needs.Break-Even CalculatorMonthly break-even units from fixed costs and unit margin.Listing Character CounterCharacter and UTF-8 byte counter — search terms are measured in bytes.

Marketplace fees 11

Etsy Fee CalculatorEtsy listing, transaction and payment fees, plus net profit per sale.Trendyol Commission CalculatorCategory commission, shipping desi and VAT-inclusive net profit.Multi-Currency Profit CalculatorProfit across two currencies, with the conversion spread on both legs.TikTok Shop Profit CalculatorTikTok Shop commission, affiliate cut and net margin per unit.Walmart Fee CalculatorNet profit per unit from Walmart referral and WFS fulfilment fees.n11 Commission Calculatorn11 category commission, VAT and the 1% e-commerce withholding in one screen.Hepsiburada Commission CalculatorHepsiburada category commission, VAT and the 1% e-commerce withholding in one screen.ÇiçekSepeti Commission CalculatorÇiçekSepeti category commission, VAT and the 1% e-commerce withholding in one screen.Pazarama Commission CalculatorPazarama category commission, VAT and the 1% e-commerce withholding in one screen.PTTAVM Commission CalculatorPTTAVM category commission, VAT and the 1% e-commerce withholding in one screen.Sale Price CalculatorThe sale price that hits your target margin, from cost, referral and FBA fees.

Sourcing & freight 5

MOQ CalculatorThe cash a minimum order ties up, and how many units bring it back.Landed Cost CalculatorGoods plus freight plus duty — the true cost of one unit at your door.Launch Cost CalculatorTotal launch capital from inventory, ads and everything else.Reorder Point CalculatorWhen to reorder — and, if you want, the safety stock from a service level and the EOQ.International Shipping CalculatorAir versus sea freight cost per unit from quantity, weight and volume.

Advertising 2

PPC ACOS/ROAS CalculatorACoS, break-even ACoS, break-even CPC and your bid ceiling.PPC Budget CalculatorReal daily and monthly ad budget from your target ad-order count.

Listing & research 1

Rufus AI-Readiness AuditWill Amazon's Rufus AI recommend your listing? Score in 30 seconds.

Frequently asked questions

Are these tools really free?

Yes. All 27 calculators on this page open and run without an account, a card or a trial period. There is no usage cap and no expiry.

How many free seller tools are there?

27, listed in full on this page and grouped by topic: profit and operations, marketplace fees, sourcing and freight, advertising, and listing research.

Do I need to sign up or give a card?

No. The calculation happens in the page as you type. If you choose to email a result to yourself, that address reaches us — that step is optional and clearly marked.

What do the paid plans add?

Live marketplace data: product and keyword research across 20 Amazon marketplaces, rank and competitor tracking, AI listing tools and PPC automation. The calculators here work from numbers you enter, so they need no data plan.

Browse all toolsCompare plans

The paid plans add live marketplace data and tracking. The calculators above do not expire.

AI-powered seller intelligence for Amazon, Walmart, TikTok Shop and Etsy.

Amazon

KeySpyScribeAICOSMO ScoreCOSMO ReportPPC AnalyticsDaypartingSplit Test

Walmart

Walmart KeySpyProduct ResearchListing OptimizerWFS CalculatorAMZ→WMT Convert

TikTok

Trending ProductsAd Creative SpyCreator DiscoveryLIVE AnalyticsTikTok Keywords

Etsy

Etsy KeySpyProduct ResearchListing OptimizerShop AnalyzerFee Calculator

Research

Industry ReportsCOSMO Report FreePredictive TrendsBlog

Company

PricingAffiliate ProgramChrome ExtensionHelp CenterBlogAPISupportPrivacyData MethodologyPredictive Trend AICross-Platform P&LAccount HealthListing A/B TestReview IntelligenceP&L DashboardFree MigrationSeller Community NewAPI Marketplace NewWeekly Market ReportAgency / White-LabelMulti-Marketplace
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