Index Coverage Calculator

Break down index coverage into indexed, excluded and error states.

About Index Coverage Calculator

Coverage below about 70 per cent usually indicates thin or duplicate content rather than a technical fault. Unaccounted URLs are typically discovered but not yet crawled, which points to crawl budget pressure. Submitting fewer, higher-quality URLs generally raises both coverage percentage and total indexed pages.

Formula

Index Coverage

Coverage = indexed ÷ submitted; the remainder splits between excluded, errors and unaccounted

excluded: Intentionally not indexed, such as canonicalised duplicates
unaccounted: Submitted but neither indexed nor explained, usually discovered-not-indexed

Worked example

With the default values below, Index Coverage Calculator returns Index Coverage of 80.000%. Change any input above and every figure here is recalculated in your browser.

Inputs used

URLs submittedminimum 1: 45,000
URLs indexedminimum 0: 36,000
URLs deliberately excludedminimum 0: 6,500
URLs with errorsminimum 0: 1,200

Results

Index Coverage: 80.000%
URLs Unaccounted For: 1,300
Share With Errors: 2.667%
Share Deliberately Excluded: 14.444%
Verdict: Coverage is healthy

Step by step

1Values used
2Index Coverage
3Index Coverage= 80.000
4URLs Unaccounted For= 1,300
5Share With Errors= 2.667
6Share Deliberately Excluded= 14.444
7Verdict= Coverage is healthy

Assumptions and limits

The result is derived only from the 4 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 3 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 Index Coverage calculated?

Coverage = indexed ÷ submitted; the remainder splits between excluded, errors and unaccounted Coverage below about 70 per cent usually indicates thin or duplicate content rather than a technical fault. Unaccounted URLs are typically discovered but not yet crawled, which points to crawl budget pressure.

Why does Index Coverage matter?

Submitting fewer, higher-quality URLs generally raises both coverage percentage and total indexed pages.

What values do I need to enter?

This calculator takes 4 inputs: URLs submitted, URLs indexed, URLs deliberately excluded, URLs with errors. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.