Free Amazon & TikTok Shop
calculators and tools.
Quick, private calculators that run in your browser, plus a glossary of the terms that matter. Built by the team that manages $3M+ in monthly ad spend.
Free tools and calculators
Tool guideAmazon seller tools, sorted by the job they do
Keyword research, PPC, listings, inventory, repricing, reviews, analytics, brand protection and TikTok Shop tools compared.
Open guide →Free calculatorACoS, TACoS & Break-Even ACoS Calculator
Free Amazon ACoS calculator: calculate ACoS, ROAS, TACoS and break-even ACoS from your ad spend, ad sales, total sales and margin.
Open →Free calculatorAmazon FBA Profit Calculator
Free Amazon FBA profit calculator: enter price, product cost, referral fee, FBA fee, shipping and ad cost per unit to see profit, margin and ROI per unit.
Open →Free calculatorTikTok Shop Commission & Margin Calculator
Free TikTok Shop calculator: model creator commission, platform fee, product and shipping costs and ad cost to see profit and margin per order.
Open →GlossaryAmazon & TikTok Shop glossary
62 plain-English definitions of seller terms.
Open →Guides for brand owners
Best Amazon agency for brands
What separates a good agency and who we fit.
Read guide →ChecklistHow to choose an Amazon agency
Questions to ask and red flags.
Read guide →Cost guideWhat an Amazon agency costs
Pricing models and what drives scope.
Read guide →Honest answerIs an Amazon agency worth it?
When it pays off and when it doesn’t.
Read guide →SwitchingSwitching Amazon agencies
A clean handover without losing momentum.
Read guide →Problem fixAmazon sales dropped?
Where to look first.
Read guide →Problem fixACoS too high?
Cut waste without cutting sales.
Read guide →Problem fixLost the Buy Box?
Why it happens and how to win it back.
Read guide →Problem fixListing suppressed?
Common causes and fast fixes.
Read guide →Account healthAccount suspended?
What to do first.
Read guide →