Free, no login, nothing installed

Amazon Seller Tools

Three things sellers pay for, running free in your browser. Nothing you type leaves this page.

Will this product actually make money?

Enter your numbers. It works out Amazon’s referral fee, the FBA fulfilment fee from your size and weight, storage, and tells you the margin and ROI you are left with.

Selling price (USD)What the customer pays

Product cost per unit (USD)What you pay the supplier

Inbound shipping per unit (USD)Supplier to Amazon warehouse

Other cost per unit (USD)Packaging, prep, returns allowance

CategorySets Amazon’s referral fee percentage

Packed dimensions in inchesLength, width, height of the box that ships

Packed weightIncluding box and packaging

Months held in Amazon storageAverage, per unit

Ad spend per unit sold, USD (optional)Total PPC spend divided by units sold. Leave 0 if not running ads.

Estimate only, using Amazon US non-peak FBA rates checked on 6 September 2026, including the 3.5% fuel surcharge. Apparel, dangerous goods and peak season (Oct to Dec) rates are higher. Amazon changes fees, so confirm against Seller Central before you commit to inventory.

Pull every ASIN out of a mess of links

Paste Amazon URLs, a copied page, an email, a spreadsheet column, anything. It finds the ASINs, removes duplicates, and gives you a clean list to copy or download.

Paste anything containing Amazon links or ASINs

Check your listing before you upload it

Amazon silently cuts off long titles and drops backend keywords over the byte limit. This counts everything live and flags what will break.

Product title200 character limit. Search results show roughly the first 80.

0 characters200 max

Bullet pointsOne per line, up to 5. Keep each under 200 characters so mobile does not truncate it.

Backend search terms250 byte limit. Amazon drops everything past it, silently.

0 bytes250 max

How these work. Everything runs inside your own browser. Nothing you type into these tools is uploaded, stored, logged or seen by us. Fee data was last checked on 6 September 2026 and is set by Amazon, not by us, so confirm anything you are about to commit money to against Seller Central before you buy inventory.