Tools / calculators
Digital marketing calculators.
Bookmarkable calculators for SEO, PPC, CRO, ecommerce and commercial planning. The original Website-Me calculator formulas have been migrated and expanded with clear methodology.
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Digital marketing calculators for real project work
Choose a tool by the task you need to complete, then follow the explanation and related links for context.
SEO ROI Calculator
Estimate additional visits, conversions, revenue, contribution and ROI from an expected SEO uplift.
Open toolOrganic Traffic Value Calculator
Estimate a PPC replacement-value proxy for organic visits using traffic and an indicative CPC.
Open toolCTR Calculator
Calculate click-through rate from impressions and clicks, or estimate clicks from an expected CTR.
Open toolConversion Rate Calculator
Calculate conversion rate from visitors and conversions, or estimate conversions from an expected rate.
Open toolBreak-even ROAS Calculator
Calculate the minimum return on ad spend needed to cover variable costs and advertising cost.
Open toolLTV:CAC Calculator
Compare customer lifetime value with acquisition cost and estimate a simple payback period.
Open toolAverage Order Value Calculator
Calculate average order value from revenue and completed orders.
Open toolROI Calculator
Calculate return on investment, profit and ROAS from revenue and cost.
Open toolCustomer Lifetime Value Calculator
Estimate retail or subscription customer lifetime value using margin, repeat purchase, retention and churn.
Open toolLTV:CAC & Payback Period
Check LTV:CAC and simple months to pay back acquisition cost.
Open toolCustomer Acquisition Cost Calculator
Calculate CAC from sales and marketing spend and new customers.
Open toolBreak-even Conversion Rate
Calculate the minimum conversion rate needed to cover CPC from AOV and gross margin.
Open toolA/B Test Sample Size
Estimate samples per variant using baseline conversion, detectable effect, power and alpha.
Open toolA/B Test Significance
Compare two conversion rates with a two-proportion z-test approximation and confidence interval.
Open toolSEO Traffic & Revenue Forecast
Estimate extra clicks, revenue and contribution from a CTR change.
Open toolKeyword Value & Max CPC Calculator
Calculate value per click and break-even max CPC from AOV, conversion rate and margin.
Open toolROAS & Target CPA
Calculate ROAS and a target CPA from revenue, spend, gross profit and payback time.
Open toolBreak-even CPC & Bid Ceiling
Find break-even CPC and a target-ROAS bid ceiling from AOV, conversion rate and margin.
Open toolA/B Test Duration
Estimate test days from sample size, traffic, variants, power and alpha.
Open toolConversion Uplift to Revenue
Translate a conversion-rate change into incremental revenue and contribution.
Open toolEmail List Growth & Churn Forecast
Project list size month by month using new subscribers and churn.
Open toolRevenue per Send (RPS)
Calculate revenue per email sent for campaign or flow comparisons.
Open toolEngagement Rate & CPM
Calculate engagement rate, CPM and cost per engagement from reach, impressions, spend and interactions.
Open toolInfluencer Fee & ROI
Estimate a CPM or CPV-based fee and model revenue from clicks and conversions.
Open toolDiscount Profitability & Break-even Discount
Calculate profit per unit after a discount and the maximum discount before profit reaches zero.
Open toolFree Shipping Threshold Optimiser
Estimate a free-shipping threshold from AOV, shipping cost and gross margin.
Open toolConnect the work
Related Website-Me services
Tools work best when their output feeds into a clear technical or commercial decision.