Free tools · no sign-up
The math whatnot leaves to you.
Built from whatnot’s published fees, checked September 2026. Every input lives in the link, so you can send a co-host your numbers. Your CSV stays in your browser.
01
Fee calculator
Commission, processing and the 30 cents.
What do I get paid?
02
Start price floor
Your lowest safe start or BIN price.
Where should the auction start?
03
Ring-light card
Your floor for every cost, on one card.
What's my floor, mid-show?
04
Show break-even
Orders a show needs to pay for itself.
How many sales until this show pays?
05
Profit calculator
Profit, margin and ROI on an item or lot.
Was this lot worth buying?
06
Shipping calculator
What the buyer pays, and what you eat.
What does shipping cost me?
07
Report analyzer
Fees and payout per show. Nothing uploads.
Where did last week's money go?
08
Show recap card
A share card from your report, in four sizes.
What do I post after a show?
09
Tier planner
What the next tier saves, in dollars.
Is the next tier worth it?
010
November 1
Two fee changes on one day. See yours.
What does November 1 cost me?
011
Consignor payout
A clean statement for the people you sell for.
What do I owe my consignor?
012
Fee and category trends
This year's changes, and take by category.
What changed, and what does it cost me?
Run the same math on every sale.
Each tool here is a piece of whatROI. Import your Weekly Orders Report, add your lot costs, and see profit per streamed hour after fees, labels, giveaways and refunds.
Start free$0.30
Per checkout, on top of 2.9% of what the buyer paid. On a $2 card, it’s the biggest fee.