Internal Link Equity Calculator

Model how link equity flows through internal links to a target page.

About Internal Link Equity Calculator

Each page divides its passable authority across all outbound links, so pages with hundreds of links pass very little through any one of them. Reducing navigation bloat concentrates equity on important pages. Sitewide footer links to low-value pages are the most common way internal equity is wasted.

Formula

Internal Link Equity

Equity per link = source authority × damping ÷ outbound link count

damping factor: Share of authority that passes through a link, conventionally 0.85
dilution: Equity divides across every outbound link on the page

Worked example

With the default values below, Internal Link Equity Calculator returns Equity Passed per Link of 1.03889. Change any input above and every figure here is recalculated in your browser.

Inputs used

Authority of the linking pageaccepts 0–100: 55
Outbound links on that pageminimum 1: 45
Links pointing to the target pageminimum 0: 12
Damping factoraccepts 0–100 %: 85 %
Current authority of the target pageaccepts 0–100: 28

Results

Equity Passed per Link: 1.03889
Total Equity Received: 12.4667
Projected Target Authority: 32.987
Equity Lost to Damping: 2.2000
Recommendation: Equity flow is reasonable

Step by step

1Values used
2Internal Link Equity
3Equity Passed per Link= 1.03889
4Total Equity Received= 12.4667
5Projected Target Authority= 32.987
6Equity Lost to Damping= 2.2000
7Recommendation= Equity flow is reasonable

Assumptions and limits

The result is derived only from the 5 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 5 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

How is Internal Link Equity calculated?

Equity per link = source authority × damping ÷ outbound link count Each page divides its passable authority across all outbound links, so pages with hundreds of links pass very little through any one of them. Reducing navigation bloat concentrates equity on important pages.

Why does Internal Link Equity matter?

Sitewide footer links to low-value pages are the most common way internal equity is wasted.

What values do I need to enter?

This calculator takes 5 inputs: Authority of the linking page, Outbound links on that page, Links pointing to the target page, Damping factor, Current authority of the target page. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.