Amazon BSR Calculator

Paste an Amazon product page to read its Best Sellers Rank automatically, estimate its sales and revenue, and compare the top sellers in your niche.

Updated 100% free Nothing is saved online No sign-up

Watch the 1:20 video tutorial
Amazon BSR Calculator – free online tool
One-click mode: drag this button to your bookmarks bar once. Then, on any Amazon product page, click it – this page opens with the BSR, price, rating and category already filled.
⚡ ToolMaxo BSR
Can’t drag it? Add it in 30 seconds
  1. Show the bookmarks bar: Ctrl+Shift+B (Windows) or ⌘+Shift+B (Mac), then try dragging again.
  2. Or tap
  3. Chrome / Edge: right-click the bookmarks bar → Add page… (Edge: Add this page to favourites) → Name: ToolMaxo BSR → paste the code into URL → Save.
  4. Safari: press ⌘+D on any page and save it to Favourites, then right-click it → Edit Address… → paste the code → OK.
  5. Firefox: right-click the bookmarks toolbar → Add Bookmark… → paste the code into URL → Save.

Then open any Amazon product page on your computer and click ToolMaxo BSR. (Bookmark buttons don’t work in phone browsers – on a phone, paste the link or page text below.)

—Sales per day
—Sales per month
—Likely range / month
—Revenue per month

Niche analysis – compare the top sellers for your keyword

Add the top 5–10 products for your main keyword (paste each one above and tap “Add”, or type the numbers). All rows use the marketplace and category above.

ProductBSRPriceReviewsSales / moRevenue / mo
—Niche revenue / month
—Average sales / product
—Average reviews
—Top 3 share

Reverse: what rank do I need?
—BSR needed (about)
Add this free tool to your website

Paste this code into any page (WordPress: a “Custom HTML” block). It works on phones, runs in your visitors’ browsers and needs no account.

Preview

How to use the Amazon BSR Calculator (video)

1:20 · with voiceover
In this video
  1. Paste the Amazon product page or link
  2. The BSR, category, price and ratings fill in by themselves
  3. See estimated daily and monthly sales and revenue
  4. Add top sellers to compare the whole niche

What is Amazon BSR?

BSR (Best Sellers Rank) shows how well a product sells compared with everything else in the same category. Rank #1 is the best seller. Amazon updates it every hour or so from recent and past sales, so a lower number means more sales. You find it on the product page under Product information or Product details.

How to use the BSR calculator

  1. Fastest: drag the ⚡ ToolMaxo BSR button to your bookmarks bar once, then click it on any Amazon product page. Everything fills in by itself.
  2. Or open the product on Amazon, press Ctrl+A and Ctrl+C (on a phone: share the link or copy the page text) and paste it into the box. The tool reads the BSR, category, marketplace, price, rating and number of ratings for you. A link or ASIN alone gives you a quick “Open on Amazon” button.
  3. Check the main category and marketplace, then see the estimated daily and monthly sales and revenue.
  4. Tap Add to niche analysis, then paste the next competitor. With 5–10 top sellers you get the niche’s monthly revenue, average sales, average reviews and how much the top 3 sellers dominate.
  5. Use the reverse box to see which rank you need to reach a sales target.

How accurate is a BSR to sales estimate?

Amazon does not publish sales numbers, so every BSR calculator, free or paid, gives an estimate. This one uses a rank-to-sales curve on a logarithmic scale, adjusted for category and marketplace size, and shows a likely range. It is ideal for comparing products and judging a niche, not for exact accounting. BSR can also jump after a single sale for slow products, so check a product on a few different days.

How to judge a niche

  • Demand: top products selling 300+ units a month each show strong demand; under 100 is weak.
  • Competition: an average under 300 reviews is easier to enter; over 1,000 means established sellers.
  • Concentration: if the top 3 take more than 70% of the sales, buyers mostly pick a few brands.

Once a niche looks good, check the margin with the Amazon FBA calculator and find the best keywords with the Amazon keyword tool. See all Amazon seller tools.

Frequently asked questions

Do I have to type the BSR myself?

No. Add the ToolMaxo BSR button to your bookmarks bar and click it on any Amazon product page: the BSR, category, price and ratings fill in automatically. You can also paste the page.

How many sales does a BSR of 1,000 mean?

In a big US category such as Home & Kitchen, a BSR around 1,000 usually means roughly 1,000 to 1,500 sales a month. Smaller categories and marketplaces sell fewer units at the same rank.

Why can’t the tool read the BSR from just the link?

Amazon blocks automated reading of its product pages, so a free tool cannot fetch them. Copying the page from your own browser takes two seconds and works every time.

Should I use the main category or sub-category rank?

Use the main category rank, the first BSR line on the product page. The tool reads that one automatically.

Is this BSR calculator exact?

No BSR calculator can be exact, because Amazon does not share sales data. This tool gives an estimate and a likely range, which is what you need to compare products and niches.

Is the Amazon BSR calculator free?

Yes, it is free with no sign-up, and works for Amazon US, UK, Germany, India, UAE, Saudi Arabia and more.