Link Building Cost CalculatorCost per earned backlink from outreach, content and digital PR
Work out what each earned link really costs from your outreach funnel, then see how many links a month you need, and what it would cost, to close the gap with a competitor.
Prices the work of earning links, in line with Google’s link spam policies and its guidance on qualifying outbound links
Updated October 24, 2026
Outreach funnel
Closing the link gap
| Cost item | Basis | Per month | Per link |
|---|
How much does link building cost?
Link building cost is the total monthly spend on outreach time, content, tools and linkable assets, divided by the links you earn. Links earned = prospects × reply rate × link rate. For example, 200 prospects at an 8% reply rate and a 35% link rate earn 5.6 links a month; at $3,490 of spend, that is about $623 per earned link.
How to calculate link building cost
- Describe your outreach. Enter how many sites you contact a month and how long each takes to research, personalise and follow up.
- Add your conversion rates. Reply rate and the share of replies that turn into links. If you are new to outreach, start with 5–10% replies and 25–40% of replies converting, then replace them with your own numbers.
- Add content and asset costs. Guest articles, expert quotes or a data study that gives people a reason to link. A one-off asset is spread over the months you will pitch it.
- Plan the gap. Enter your referring domains and a competitor’s to see how many links a month you need, what that costs and how long it takes at your current pace.
Cost per earned link formula
The outreach funnel. Each step usually loses most of the people above it, which is why cost per link is often higher than expected.
Labour = prospects × minutes per prospect ÷ 60 × hourly rate.
Worked example (the calculator’s default inputs)
- 200 prospects × 8% reply rate = 16 replies; 16 × 35% = 5.6 earned links a month.
- Labour: 200 × 15 min = 50 hours × $40 = $2,000. Content: 5.6 × $150 = $840. Tools: $150. Asset: $3,000 ÷ 6 = $500.
- Total $3,490 a month, so the cost per earned link is $623, and you need about 36 prospects for every link.
- Closing a 180-domain gap in 12 months needs 15 links a month (about $9,350 at this cost per link). At the current pace of 5.6 links it would take 33 months.
Earned links vs paid links
Google’s spam policies treat buying or selling links that pass ranking credit, excessive link exchanges and large-scale guest posting with keyword-rich anchors as link spam. Paid or sponsored links are allowed only when they are marked with rel=”sponsored” or rel=”nofollow”.
| Approach | Policy status | What it costs |
|---|---|---|
| Digital PR and data studies | Earned; fine | Research, design and outreach time |
| Expert quotes and journalist requests | Earned; fine | Expert time and fast responses |
| Free tools and calculators | Earned; fine | Development, then ongoing promotion |
| Genuine guest articles for relevant sites | Fine in moderation, without manipulative anchors | Writing and outreach time |
| Paid placement marked rel=”sponsored” | Fine as advertising; passes no ranking credit | The placement fee |
| Paid links that pass PageRank, PBNs, link farms | Link spam; risks manual action | Fees, plus the risk of losing rankings |
How to earn links more cheaply
Build one strong asset
Original data, a free tool or a definitive guide gives people a reason to link without being asked. Spread over many pitches, its cost per link keeps falling.
Target fewer, better prospects
Sites that already link to similar resources reply far more often. Personalised pitches to 100 relevant sites beat templates to 1,000.
Reclaim unlinked mentions
Sites that mention your brand without linking convert at much higher rates. A short, polite request is often enough.
Fix broken backlinks
Links pointing to deleted pages on your site are wasted. Redirect them to the best live page to recover their value at almost no cost.
Track replies, not just links
If reply rate falls, the pitch or targeting is the problem. If replies don’t convert, the asset or the offer is.
Budget it properly
Add the monthly cost from here to the SEO Cost Calculator so your full SEO budget is realistic.
Related SEO calculators
Links are one line in an SEO budget. These calculators put them in context with the rest of the programme and its return.
Link building cost questions, answered
It depends on your outreach efficiency. Divide total monthly spend on outreach labour, content, tools and assets by the links you earn. With the calculator's defaults, 5.6 links a month for $3,490 works out at about $623 per earned link.
Cost per link = (outreach labour + content + tools + linkable asset cost per month) ÷ links earned. Labour is prospects × minutes per prospect ÷ 60 × hourly rate.
It varies widely by niche and targeting. Cold, generic outreach often gets low single-digit reply rates, while well-targeted, personalised pitches can do much better. Track your own rate and use it here.
Buying or selling links that pass ranking credit is listed as link spam in Google's spam policies. Paid and sponsored links must use rel="sponsored" or rel="nofollow".
Because most outreach doesn't convert. If 1 in 36 prospects links to you, every link carries the cost of researching and pitching the 35 who didn't.
There is no fixed number. Compare referring domains with the pages that rank for your keyword, and remember relevance and quality matter more than raw counts. Use the link gap planner to budget for closing the gap.
Content created to attract links on its merits, such as original research, a free tool or calculator, a data visualisation or a definitive guide. One strong asset can be pitched for months.
Genuine articles for relevant sites can build reputation and referral traffic. Large-scale guest posting campaigns with keyword-rich anchor links are treated as link spam, so keep it occasional and editorial.
Links are usually discovered within weeks, but the ranking effect builds over months and depends on the rest of your SEO. Plan link programmes over at least 6–12 months.
Raise reply rates with better targeting, create a stronger linkable asset, reclaim unlinked brand mentions and fix broken backlinks. Each improves the funnel without adding outreach hours.
Manzoor Ahmad
Web developer & SEO specialist · 13+ years
Over 13 years I have earned links for my own sites with free tools, data and outreach, and the cheapest links have always come from assets worth linking to. This calculator is the funnel maths I use to decide whether a link campaign is worth running. Read my full profile.
Published and last reviewed: October 24, 2026
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Sources & references
- Google Search Central. Spam policies for Google web search (link spam).
- Google Search Central. Qualify your outbound links to Google.
- Google Search Central. SEO Starter Guide: promoting your website.
- Google Search Central. Link best practices for Google.
Results are planning estimates from the rates you enter. Outreach performance varies by niche, offer and relationships. dexocalc does not endorse buying links that pass ranking credit; follow Google’s spam policies.