SEO Calculators Flagship audit model

SEO Score Calculator

October 2026 11 min

Score any site 0–100 across technical, content, on-page, authority, UX and mobile pillars — with grade, visibility index, traffic estimate and a prioritised fix list.

SEO Score: 67.3; /100
Grade: C; Fair
Est. Clicks/mo: 2,040; @ pos 14.5
Priority Gap: 32.7; pts to 100

Calculator

Audit plans — pick your site profile

Plans load realistic pillar presets so the score starts near your situation. Fine-tune any slider afterwards — results update live.

Pillar scores (0–100 each — be honest, use evidence)

Tip: start from a plan preset, then adjust. Content 25% · Technical 20% · Authority 20% · On-page 15% · UX 10% · Mobile 10%.

Technical health(/100) Help

/100

Crawl, index, speed, HTTPS, redirects

Content quality(/100) Help

/100

Depth, helpfulness, freshness, E-E-A-T

On-page optimisation(/100) Help

/100

Titles, metas, headings, schema

Authority & trust(/100) Help

/100

Referring domains, relevance, brand

Page experience (UX)(/100) Help

/100

CWV, layout stability, intrusives

Mobile-friendliness(/100) Help

/100

Responsive, speed parity, tap targets

Crawl & SERP context (powers visibility + clicks)

Crawlable pages(urls) Help

urls

Indexable 200 URLs

Indexed pages(urls) Help

urls

GSC indexed count

Avg. position(pos) Help

pos

GSC average position

Monthly impressions(/mo) Help

/mo

GSC impressions / mo

Results update live as you type

Live statistics

SEO Score

67.3

/100 · C Fair

Visibility Index

55.5

/100 · 82.5% indexed

Est. CTR @ Position

2.4%

pos 14.5 · blended curve

Weakest Pillar

Authority

55/100 — fix first

CompositeC · Fair

Results

Normal

SEO Score

67.3/100

C · Fair — Fair: visible in places, invisible in others. A focused 30-day sprint can add 10+ points.

Grade

C (Fair)

A+ ≥ 90 · A ≥ 80 · B ≥ 70 · C ≥ 60 · D ≥ 40 · F < 40

Visibility Index

55.5/100

Score × indexed share — what can actually rank

Est. Monthly Clicks

2,040clicks

Impressions × 2.4% CTR @ pos 14.5

Priority Gap

32.7pts

Weakest pillar: Authority & trust (55/100)

+10 Pts Projection

2,407clicks

+10 score pts ≈ +18% clicks (assumption, see limitations)

Exact arithmetic on your inputs. Verify pillar ratings against crawl exports, CrUX field data and Search Console before committing budget.

Visualizations

Pillar scores (0–100)

70Technical

68Content

72On-page

55Authority

70Page

75Mobile-friendliness

90-day click projection (+10 pts path)

SEO score (0–100)

67.3/100

0100

Formula

How the SEO Score is computed from its six pillars plus crawl and SERP context.

Score = 0.20·Technical + 0.25·Content + 0.15·OnPage + 0.20·Authority + 0.10·UX + 0.10·Mobile

Alternative Form

Visibility = Score × Indexed% ÷ 100 · EstClicks = Impressions × CTR(pos)

Variables

Symbol	Name	Unit	Description
T	Technical health	/100	Crawl, index, speed, HTTPS, redirects, sitemap
C	Content quality	/100	Depth, helpfulness, freshness, E-E-A-T signals
O	On-page	/100	Titles, metas, headings, keyword placement, schema
A	Authority & trust	/100	Referring domains, relevance, brand signals
U	Page experience	/100	CWV (LCP/INP/CLS), intrusives, layout stability
M	Mobile-friendliness	/100	Responsive, tap targets, mobile speed parity

Explanation

Pillars are weighted by observed ranking leverage: content, technical and authority dominate because they decide eligibility, understanding and trust. Visibility multiplies by indexed share since unindexed pages cannot rank. Clicks fold in the CTR-by-position curve so the same score on page 2 vs. page 1 reads differently.

Derivation

Weights sum to 1.0 so the composite stays on a 0–100 scale. The +10-point projection applies a blended +18% click uplift (industry-median observation), stated as an assumption — not a guarantee.

Step-by-Step Calculation

Follow each step to understand how the result is calculated from your inputs.

Step 1

Rate each pillar 0–100 honestly (or pick a plan preset).

Pillar inputs

Technical:70/100

Content:68/100

On-page:72/100

Authority:55/100

Intermediate: Six pillar scores accepted

Result: Inputs locked

Step 2

Apply pillar weights and sum the composite.

Score = 0.20T + 0.25C + 0.15O + 0.20A + 0.10U + 0.10M

T:70

C:68

O:72

A:55

U:70

M:75

Intermediate: 14.0 + 17.0 + 10.8 + …

Result: Score = 67.3/100 (C)

Step 3

Discount by indexation to get the visibility index.

Visibility = Score × Indexed% ÷ 100

Indexed:198 / 240

Indexed%:82.5%

Intermediate: 67.3 × 82.5%

Result: Visibility = 55.5/100

Step 4

Convert SERP context into clicks and a +10-point path.

Clicks = Impressions × CTR(pos); Path = Clicks × 1.18

Position:14.5

CTR:2.4%

Impressions:85,000

Intermediate: 85,000 × 2.4%

Result: 2,040 → 2,407 clicks/mo

Final Answer

67.3

Worked Examples

See how the calculator works with different scenarios.

Scenario

New 40-page blog: decent templates, thin archive, almost no links.

Inputs

Technical:55/100

Content:50/100

On-page:55/100

Authority:35/100

Calculation

0.20×55 + 0.25×50 + 0.15×55 + 0.20×35 + 0.10×60 + 0.10×65 ≈ 52.

Result

SEO Score ≈ 52/100 (D–F band).

Interpretation

Eligibility work first: indexation, speed, titles — links come later.

Understanding Your Result

Your Result: SEO Score: 67.3/100 (C · Fair)

Typical range: New sites cluster 35–55; active publishers 60–75; hardened authorities 78–92. Above 90 is rare and usually a focused, technically clean property — not a 100k-URL marketplace.

What This Means

Your composite blends six weighted pillars. The visibility index then discounts it by indexed share — a 75 with half the site unindexed behaves like a ~38 where it counts. Estimated clicks translate the abstract number into pipeline language using your average position and impressions.

Why It Matters

Teams argue about tactics; the score forces ordering. The weakest weighted pillar drags the average most, so fixing one 40 costs less and pays more than polishing a 85. Visibility and clicks keep the conversation on revenue, not vanity grades.

Professional Interpretation

Auditors read the score left-to-right: eligibility (crawl/index/speed) → relevance (intent/content/on-page/links-in) → trust (links/brand/E-E-A-T). A low score with high authority means debt; a high score with low clicks means a position/CTR problem, not a quality problem.

How the plan presets work

Starter / Growing / Authority plans load realistic pillar baselines (e.g. Starter authority ≈ 35). They are starting points — your honest slider edits override them and results update live.

Why clicks move slower than the score

Rankings lag fixes by weeks; CTR responds in days. That is why the page shows both a score gauge and a 90-day click projection.

Recommendations

•Fix Authority & trust first — Earn 3–5 relevant links via digital PR; fix toxic/irrelevant bulk.
•Raise indexation from 82.5% toward 95%+: prune, consolidate, fix sitemaps and internals.
•At position 14.5, prioritise jumps to page 1 over polishing — intent match + internal links + one authority push.
•Re-run monthly; freeze one change per cycle so the 4-week protocol can attribute movement.

Learn — SEO scoring, deeply

An SEO score compresses a site audit into one prioritisation number. Calculators in this SEO Score & Audit group turn crawlability, content helpfulness, on-page clarity, link authority and experience signals into 0–100 composites with grades, visibility indexes and fix lists — so teams agree on what ships next.

1 · How the 0–100 model works (and what it cannot do)

Eligibility first

0–60 band

Crawl + index + speed + mobile. Fail here and great content never gets seen.

Relevance next

60–80 band

Intent match, depth, on-page clarity, internal links. This is where most sites stall.

Authority last

80–100 band

Trusted referring domains, brand search, E-E-A-T signals. Slow to build, hard to fake.

Honest limits: no third-party score sees your Search Console data, real backlink graph, or human quality ratings. Treat the number as a prioritisation aid — the pillar gaps and checklists on this page matter more than the headline.

2 · Core Web Vitals thresholds (what “good” means)

Metric	Good	Needs work	Poor
LCP (Largest Contentful Paint)	≤ 2.5 s	2.5–4.0 s	> 4.0 s
INP (Interaction to Next Paint)	≤ 200 ms	200–500 ms	> 500 ms
CLS (Cumulative Layout Shift)	≤ 0.10	0.10–0.25	> 0.25
FCP (First Contentful Paint)	≤ 1.8 s	1.8–3.0 s	> 3.0 s
TTFB (Time to First Byte)	≤ 0.8 s	0.8–1.8 s	> 1.8 s
TBT (Total Blocking Time)	≤ 200 ms	200–600 ms	> 600 ms

Test the origin against CrUX (field data) in PageSpeed Insights — lab scores alone mislead. INP replaced FID in 2024; pages passing all three vitals earn the ranking tie-break.

3 · Factor-impact table — what moves rankings most

Factor	Typical impact	Why
Search intent match	Very high	Wrong intent = no rank, regardless of links. Match the dominant SERP page type first.
Content depth & helpfulness	Very high	Original, complete, first-hand content wins helpful-content evaluations.
Backlink quality (trusted refs)	High	A few topically relevant authority links beat hundreds of low-quality ones.
Page experience / CWV	Medium–high	Tie-breaker on competitive SERPs; poor CWV caps mobile visibility.
Internal linking & crawl depth	Medium–high	Orphaned or 5+ click-deep pages rarely rank. Link equity must flow.
Title / CTR fit	Medium–high	Higher CTR earns more traffic at the same position; rewrites are the fastest win.
Freshness (query deserves freshness)	Medium	News, prices, stats and "best" lists decay fast — refresh on a cadence.
Schema / rich-result eligibility	Medium	Does not rank you higher directly, but wins pixels and CTR via rich results.
Site speed (TTFB / LCP)	Medium	Slow origins throttle crawl budget and bleed mobile users before content loads.
HTTPS + mobile-friendliness	Baseline	Table stakes: failures here veto everything else.
Keyword placement (title, H1, early copy)	Low–medium	Helps disambiguation; stuffing hurts. One natural placement per element.
URL brevity / site structure	Low	Short, logical URLs aid crawling and CTR slightly — never a rescue plan.

Helpful-content / core-update recovery

• Map traffic loss to update dates in Search Console before changing anything.
• Prune or merge thin, overlapping and search-first pages — fewer, stronger URLs.
• Add first-hand evidence: original data, screenshots, testing, named authors.
• Expect 1–2 core-update cycles for recovery; document every change with dates.

Crawl-budget playbook (large sites)

• Robots-block facets, internal search, and parameter variants that never rank.
• Keep sitemaps under 50k URLs / 50 MB; split by section; list only indexable 200s.
• Flatten depth: money pages ≤ 3 clicks from home with contextual internal links.
• Fix redirect chains (max 1 hop) and server errors — both burn budget fastest.

4 · Measure like a pro (the 4-week rank-tracking protocol)

Freeze one change per page per cycle (title, internal links, or freshness — never all three).
Log Search Console impressions, average position and CTR weekly for the target query set.
Score = (new − old) ÷ old per metric; require 2 consecutive improving weeks before scaling.
Cross-check with server logs or GSC crawl stats: improved crawling must precede improved ranking.
Hold a control set of untouched sibling pages — algorithm weather moves everything at once.

5 · E-E-A-T in practice (without gaming it)

Experience — show you did the thing: original photos, test results, “we tried 6 tools” methodology.
Expertise — named authors with credentials, cited sources, correct technical detail a novice would miss.
Authoritativeness — other trusted sites reference you; brand searches grow; experts quote the page.
Trust — HTTPS, accurate dates, corrections policy, contact/ownership transparency, no deceptive UX.
YMYL note — money/health/legal pages face stricter scrutiny; calculators here are educational estimates, not professional advice.

Practical Tips

•Score from exports: Screaming Frog / GSC / PageSpeed field data, then type the numbers in
•Photograph the weakest pillar — screenshot its evidence for the sprint ticket
•Rewrite the top-20-impression titles before building a single new link
•Add one contextual internal link per new paragraph on money pages
•Ship FAQ + Article/Product/Breadcrumb schema wherever eligible and validate
•Refresh dates, stats and outbound links on the top 20 pages quarterly

Common Mistakes

Chasing a 100 instead of the weakest pillar

Above ~85, each extra point costs 5× the last. Bank CTR and freshness wins instead.

Building links on a leaking technical base

If indexation < 85% or CWV fails sitewide, fix eligibility first — links cannot rank unindexed pages.

Rewriting everything at once

One change per page per cycle; otherwise the 4-week read is noise.

Reporting the score without visibility and clicks

Always pair the gauge with indexed share and CTR-based clicks — that is the revenue story.

Assumptions

This calculator makes the following assumptions to provide estimates:

Honest pillar inputs: Sliders reflect measured evidence (crawl, CWV field data, content review), not optimism.

Blended CTR curve: Position-to-CTR uses a blended all-vertical curve; your vertical and SERP features shift it ±30%.

+18% projection rule: Each +10 score points is modelled as +18% clicks — a planning assumption, not a forecast guarantee.

Limitations

Be aware of these limitations when using this calculator:

No GSC/link-graph access: Real impressions, link quality and manual actions live outside any self-scored model.

SERP-feature blind spots: Snippets, packs, AI Overviews and brand boxes redistribute clicks away from classic CTR curves.

Snapshot, not diagnosis: Use with a crawl, log/GSC review and human content read before committing budget.

Frequently Asked Questions

Answers to common questions about this calculator.

What is an SEO score?

An SEO score is a 0–100 composite summarising technical health, content, on-page, authority, UX and mobile signals. It is a third-party prioritisation aid — Google has never published an official site-wide score.

How is the SEO score calculated here?

Six pillars are weighted — content 25%, technical 20%, authority 20%, on-page 15%, UX 10%, mobile 10% — then summed. Visibility multiplies by indexed share; clicks fold in your average position via a CTR curve.

What is a good SEO score out of 100?

80+ is strong (A), 70–79 good (B), 60–69 fair (C), 40–59 weak (D), below 40 critical (F). New sites often start 35–55; hardened authorities sit 78–92.

How can I check my website SEO score free?

Rate the six pillars from evidence — a crawl export, PageSpeed field data, GSC indexation and a content review — and type them into this calculator. No sign-up, runs fully in your browser.

How do I improve my SEO score step by step?

Fix left-to-right: 1) crawl/index (robots, sitemap, noindex leaks), 2) speed/CWV, 3) titles/metas and intent match, 4) internal links and orphans, 5) freshness and schema, 6) relevant links. Re-score monthly.

How long does it take to raise an SEO score?

Technical and on-page fixes reflect in 2–6 weeks; content depth and internal-link gains in 1–3 months; authority moves in 3–6+ months. Expect ~10 points per focused 30-day sprint below 70.

SEO score vs domain authority — what is the difference?

This score is a full-site health composite you control directly. Domain Authority (Moz) / Domain Rating (Ahrefs) are link-graph metrics predicting rank strength. A site can have high authority but a low health score (leaking tech) or vice versa.

Does SEO score directly affect Google rankings?

No — no third-party score is a ranking factor. Rankings come from Google’s own signals. The score correlates because it aggregates many of the same observable factors (crawlability, helpfulness, experience, links).

Why is my SEO score low on mobile?

Usually mobile LCP/INP failures, intrusive interstitials, tap targets under 24px, or content parity gaps (truncated mobile copy). Test field data in PageSpeed Insights, not just lab scores.

Which technical issues hurt the score most?

Accidental noindex, robots blocks, redirect chains/loops, 404 clusters, duplicate/canonical conflicts, slow TTFB and failing CWV — they veto everything downstream.

How do Core Web Vitals feed the score?

LCP ≤ 2.5 s, INP ≤ 200 ms and CLS ≤ 0.10 mark “good”. The experience pillar encodes this; failing sitewide caps mobile visibility even with great content.

How important are backlinks for the score?

Authority carries 20% weight — the joint-largest slice. Three to five topically relevant, trusted referring domains usually move competitive queries more than dozens of low-quality links.

Does keyword density still matter in 2026?

No — density targets are obsolete. One natural placement in title, H1 and early copy plus full topical coverage beats any percentage. Stuffing actively hurts helpfulness reads.

How should I write title tags that get clicks?

Front-load the primary query, add the differentiator (year, number, “tested”), stay ~50–60 characters / 580px, and match the page’s promise. Titles are the fastest CTR win on page 1.

What meta description length boosts CTR?

Aim ~120–155 characters (920px) of benefit-led copy with the query early. Google rewrites ~70% of descriptions, so treat them as ad copy for the clicks you keep.

What internal linking pattern raises the score?

Every money page ≤ 3 clicks from home, contextual links with descriptive anchors, breadcrumb schema, and zero orphans. Link equity must visibly flow in a crawl visualisation.

Do images and alt text move the score?

Modestly but really: compressed AVIF/WebP, explicit dimensions (anti-CLS), lazy-loading below the fold, and descriptive alt text lift UX, image-pack eligibility and accessibility together.

Does schema markup improve my SEO score?

Schema aids the on-page pillar and unlocks rich results (ratings, FAQs, products, breadcrumbs) which raise CTR. It is not a direct ranking boost, but the extra pixels compound clicks.

How does content freshness affect the score?

For queries-deserving-freshness (“best”, pricing, stats), stale dates and dead links decay performance. Review top pages every 3–6 months; evergreen explainers need less churn.

What drives a local SEO score?

Beyond this page’s pillars: complete GBP categories/hours/photos, review velocity and responses, NAP consistency, local citations and location-page depth. Proximity still decides the pack.

What drives an e-commerce SEO score?

Unique PDP copy (no manufacturer duplicates), variant/canonical discipline, product + review schema, facet control, and internal links from guides to products. Thin PDPs at scale are the classic leak.

How often should I run an SEO audit?

Full score monthly, CWV weekly (CrUX moves with deploys), and a deep crawl quarterly. Always re-baseline after migrations, redesigns, CMS changes and confirmed core updates.

Which free tools verify each pillar?

Google Search Console (index/coverage/queries), PageSpeed Insights (field CWV), Schema validator, Screaming Frog free tier (500 URLs), plus manual title/anchor and content-helpfulness reads.

Should I hire an agency or DIY the fix list?

DIY the quick wins (titles, internals, compression, schema) — they are half the gap. Hire when you need log-file analysis, JS-rendering fixes, migration handling or sustained digital PR.

Why did my score drop after a Google update?

Core and helpful-content updates re-weight quality signals. Map loss dates in GSC first, then prune/merge thin overlap, add first-hand evidence and named authorship — recovery usually takes 1–2 update cycles.

Do AI Overviews and voice search change scoring?

They redistribute clicks (zero-click answers, cited passages) without changing the pillars much. Pages with clear structure, quotable definitions, schema and first-hand depth get cited more — conversational and question queries deserve FAQ-style blocks.

What is the visibility index on this page?

Score × indexed-share ÷ 100. It answers “how much of my quality can actually rank”. A 75 with 60% indexed behaves like a 45 — fix indexation before polishing copy.

Can I embed or share this SEO score result?

Yes — use copy-link, print (PDF) and share in the hero, or the ?embed=1 widget for partner pages. The gauge, pillar table and checklist all print cleanly for client reports.

Related Calculators

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Related Guides

Deepen your understanding with these educational resources.

Google SEO Starter Guide

Official crawling, indexing and ranking fundamentals

Search Essentials & Spam Policies

What Google requires for eligibility

Glossary

Technical terms used in mortgage calculations explained in plain language.

SEO score: A 0–100 composite of technical health, content, on-page, authority, UX and mobile signals. Directional, not a Google metric.
SERP: Search engine results page — the ranked list plus features (snippets, PAA, packs) for a query.
CTR: Click-through rate: clicks ÷ impressions. Organic CTR falls steeply with position.
Crawl budget: Pages Googlebot will crawl per site per day. Waste (facets, dupes, chains) starves important URLs.
Indexation: Share of submitted/crawlable URLs actually in Google’s index and eligible to rank.
E-E-A-T: Experience, Expertise, Authoritativeness, Trust — Google’s quality-rater lens, vital for YMYL topics.
Core Web Vitals: LCP, INP, CLS (+FCP/TTFB/TBT context): loading, interactivity and stability thresholds.
Canonicalization: Declaring the preferred URL among duplicates so ranking signals consolidate.
Link equity: Ranking value passed through links — internally (link juice) and externally (authority).
Long-tail keyword: Longer, specific, low-volume queries ("best budget trail shoes for flat feet") that convert well in aggregate.
Visibility index: Score × indexed-share ÷ 100. The rank-eligible fraction of your quality.
Priority gap: 100 − score. Sized in points so roadmaps can promise “close 10 points in 30 days”.
CTR curve: Blended position → click-rate mapping (≈27.6% at #1 → ~2.4% at #10) used for click estimates.

Authoritative References

Trusted sources and standards referenced by this calculator.

Google Search Central — SEO Starter Guide Google — Search Essentials Google — Core Web Vitals & Page Experience Schema.org — Full vocabulary Moz — Beginner’s Guide to SEO Ahrefs — SEO Statistics & Benchmarks Backlinko — CTR & Ranking Factor Studies

Applicable Standards

Google Search Essentials (formerly Webmaster Guidelines)Google Search Central — Ranking, crawling & indexing documentationSchema.org vocabulary + Google Search Gallery (rich results)Core Web Vitals / Page Experience thresholds (web.dev)WCAG 2.2 AA (accessibility overlaps mobile & UX scoring)RFC 9309 — Robots Exclusion Protocol; RFC 9110 — HTTP semantics (redirects/status)

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Last Updated:

2026-10-05

Version:

2.0.0

References:

License:

Free to use for educational and professional purposes.

Pillar breakdown vs. benchmarks

Pillar	Your score	Weight	Typical good	Fastest win
Technical health	70/100	20%	75+	Validate robots/sitemap, fix chains + 404s, lift CWV pass rate.
Content quality	68/100	25%	75+	Merge thin pages, add first-hand depth, refresh top 20 quarterly.
On-page optimisation	72/100	15%	75+	Rewrite titles/metas for CTR, one H1, early natural keyword use.
Authority & trust FIX	55/100	20%	75+	Earn 3–5 relevant links via digital PR; fix toxic/irrelevant bulk.
Page experience (UX)	70/100	10%	75+	Cut pop-ups, stabilise layout (CLS), speed up TTFB/LCP.
Mobile-friendliness	75/100	10%	75+	Responsive check, tap targets ≥ 24px, no intrusive interstitials.

Weights mirror the flagship model (content 25%, technical 20%, authority 20%, on-page 15%, UX 10%, mobile 10%). Your composite is 67.3/100 (C).

Long-tail questions this page answers

Each phrase below maps to a section or FAQ further down — written to match the exact phrasing searchers type.

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SEO health checklist

Tick off what already ships — your page scores 1/6 (17%).