Complete Reference · Live Calculators

Every Amazon metric, one library.

Advertising, Seller/Vendor Central, Brand Analytics, and inventory health — grouped by what each one actually measures, with two live calculators below.

01 — Glossary

Grouped by where you'd actually find it.

Paid — Visibility & Engagement (Advertising Console)

Impressions
raw count
Times your ad was shown
Viewable Impressions
raw count
Impressions that were actually visible on screen (used for Sponsored Display)
Clicks
raw count
Times someone clicked your ad
CTR
Clicks ÷ Impressions × 100
Is the ad catching attention
CPC
Ad Spend ÷ Clicks
What each click costs
CPM / vCPM
Spend ÷ Impressions × 1,000
Cost per 1,000 (viewable) impressions
Impression Share
Your Impressions ÷ Total Available
Share of available auction volume you're winning

Organic + Paid Combined (Business Reports / Brand Analytics)

GV (Glance Views)
raw count
Product detail page views — Vendor Central's term
Sessions
raw count
Unique visits — Seller Central's near-equivalent of GV
CVR
Orders ÷ Clicks or ÷ GV/Sessions × 100
Is the page converting attention to sales
Unit Session %
Units Ordered ÷ Sessions × 100
Seller Central's built-in conversion proxy
Buy Box %
Buy Box Sessions ÷ Total Sessions × 100
Share of traffic where you held the Buy Box
Bounce Rate (Store)
% who leave without further interaction
Brand Store content-quality signal

Profitability & Ad Efficiency

ACoS
Ad Spend ÷ Ad Sales × 100
Ad efficiency — lower is better
ROAS
Ad Sales ÷ Ad Spend
Inverse of ACoS — higher is better
TACoS
Ad Spend ÷ Total Sales × 100
Ad dependency vs. organic strength
NTB %
New-to-Brand Orders ÷ Total Ad Orders × 100
Share of ad sales from genuinely new customers
CPA
Ad Spend ÷ Orders
Cost per order acquired

Brand Analytics — Search Query Performance

Search Frequency Rank
rank, lower = more searched
How popular a search term is across Amazon
Click Share
Your Clicks ÷ Total Category Clicks
Your slice of clicks for a keyword
Conversion Share
Your Conversions ÷ Total Category Conversions
Your slice of purchases for a keyword
Repeat Purchase Rate
Repeat Customers ÷ Total Customers × 100
Loyalty signal, tracked in Brand Analytics

Inventory & Account Health (Seller/Vendor Central)

Sell-Through Rate
Units Sold ÷ Average Inventory × 100
How fast stock is moving
IPI Score
Amazon's composite 0–1000 score
Inventory Performance Index — affects FBA storage limits
Days of Supply
Current Stock ÷ Avg. Daily Sales
Days until stockout at current pace
Out-of-Stock Rate
OOS Days ÷ Total Days × 100
Lost-sales risk from unavailable stock
Order Defect Rate
Defective Orders ÷ Total Orders × 100
Account health metric — must stay under 1%
Return Rate
Units Returned ÷ Units Sold × 100
Product-fit / listing-accuracy signal

Customer Value

CAC
Acquisition Spend ÷ New Customers
Cost to win one new customer
CLV / LTV
AOV × Purchase Frequency × Lifespan
Total value one customer generates over time
CLV:CAC
CLV ÷ CAC
Above 3:1 is generally considered healthy
02 — Worked Example

ABC Company: one month, paid + organic.

InputValue
Ad Impressions500,000
Ad Clicks2,500
Ad Spend€3,000
Orders from Ads150
Ad Sales€9,000
Glance Views (GV)40,000
Total Orders (paid+organic)400
Total Sales (paid+organic)€24,000
New-to-Brand Orders60
MetricFormula AppliedResult
CTR2,500 ÷ 500,000 × 1000.50%
ACoS€3,000 ÷ €9,000 × 10033.3%
ROAS€9,000 ÷ €3,0003.0
CVR (Orders ÷ GV)400 ÷ 40,000 × 1001.0%
TACoS€3,000 ÷ €24,000 × 10012.5%
NTB %60 ÷ 150 × 10040.0%

The read: ACoS of 33.3% looks weak alone, but TACoS of 12.5% shows ads drive only an eighth of total revenue — organic is doing most of the work, and ads are pulling in real new customers (40% NTB). Keep investing; don't panic about ACoS.

03 — Performance Calculator

Run your own numbers.

Everything updates live in your browser — nothing is sent anywhere.

Performance Calculator

Paid + organic, one screen

Customer Value (CLV / CAC)

04 — Fee & Profit Calculator

What can you actually afford to spend on ads?

Break-even ACoS is the ceiling — the ACoS at which advertising stops being profitable per unit, before overhead.

Fee & Break-Even Calculator

Per-unit economics

Break-even ACoS = Contribution per Unit ÷ Selling Price × 100. Spend above this ACoS loses money on that unit, before any other overhead.

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