Marketing & Growth Calculators — United Kingdom
Funnel rates, advertising costs and campaign returns. The arithmetic is the same everywhere; only the currency changes.
Funnel & conversion
Conversion Rate Calculator
What share of visitors take the action you want — and what a change in that rate is worth.
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Funnel Conversion Calculator
Track how many people survive each stage of a funnel, and find the step that costs you most.
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A/B Test Significance Calculator
Whether the difference between two variants is real or noise — with the p-value and the confidence interval.
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Marketing Attribution Calculator
How conversion credit splits across touchpoints under each attribution model — and how differently the same data reads depending on which you choose.
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Viral Coefficient Calculator
The viral coefficient — invitations times conversion rate — and what it does to growth above and below 1.
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Cohort Retention Calculator
How many of a starting cohort remain after each month at a steady retention rate — the survivors at one, three, six and twelve months, the cohort's half-life, the average customer lifetime and the revenue the cohort earns over it.
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Search Ranking Traffic Calculator
The extra clicks, conversions and revenue a keyword brings if it moves from its current search position to a target one.
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User Growth Forecast Calculator
Users month by month from paid acquisition, referrals measured by a viral coefficient, and churn — and the coefficient that would make growth self-sustaining.
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Ad spend & return
ROAS Calculator
Return on ad spend, the margin-adjusted version that actually matters, and the break-even ROAS you need.
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CPM and CPC Calculator
Cost per thousand impressions, cost per click and click-through rate — all three from the same three numbers.
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SEO ROI Calculator
The return on an SEO programme — traffic value, revenue, payback period, and the paid spend the same traffic would have cost.
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Content Marketing ROI Calculator
What a piece of content returns — over its whole life, not its first month — with the cost per lead and the break-even traffic it needs.
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Affiliate Commission Calculator
What an affiliate programme earns and costs — commission per sale, the margin left, and the incremental sales it needs to be worth running.
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Reach and Frequency Calculator
From impressions and the size of the audience, the share of people a campaign reaches at least once, how many times the average person sees it, the rating points delivered, and what a target frequency would need.
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Affiliate EPC Calculator
Earnings per click for an affiliate link or programme, from clicks, sales, order value and commission — the figure that compares one programme with another.
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Share of Voice Calculator
Your share of voice against up to three competitors, and the excess share of voice over market share that a widely cited rule of thumb links to growth.
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Marketing Efficiency Ratio Calculator
Total revenue over total marketing spend — the blended return that survives attribution arguments — with the break-even ratio your gross margin implies.
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Email & audience
Email Marketing Calculator
Open rate, click rate, click-to-open and unsubscribe rate from one send — with the caveat about opens.
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Email List Growth Calculator
How large an email list gets over the months ahead, given what joins each month and what unsubscribes or bounces away — and the size it can never grow past.
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About these calculators
These compute standard marketing measures from figures you supply. They cannot know how your platform attributes a conversion, and attribution is usually the largest source of disagreement between two people looking at the same campaign.