Marketing Calculators
A/B Test Calculator
Run a two-proportion z-test on A/B test results to check statistical significance, with a worked example and standard critical z-values by confidence level.
Bounce Rate Calculator
Calculate website bounce rate or email bounce rate with the correct formula for each mode, plus worked examples showing how the two metrics differ.
CAC Payback Period Calculator
Calculate how many months of customer revenue are needed to recoup customer acquisition cost (CAC).
Conversion Lift Calculator
Calculate conversion lift between a test group and a control group, with worked examples showing how relative lift is derived from each group's conversion rate.
CPA Calculator
Calculate cost per acquisition (CPA) from total ad spend and total conversions to measure campaign profitability.
CPC Calculator
Calculate cost per click (CPC) from total ad spend and total clicks to measure ad efficiency.
CPM Calculator
Calculate CPM (cost per mille/thousand impressions) from total ad spend and impressions for brand awareness campaigns.
CTR Calculator
Calculate click-through rate (CTR) from clicks and impressions to measure how compelling an ad's creative and targeting are.
Customer Churn Calculator
Calculate customer churn rate and retention rate from starting customer count and customers lost, with worked examples across three different loss levels.
Customer Lifetime Value (CLV) Calculator
Project customer lifetime value from average purchase value, purchase frequency, and customer lifespan, with worked examples across different buying patterns.
Customer Retention Calculator
Calculate customer retention rate from starting customers, ending customers, and new customers acquired, isolating how many original customers actually stayed.
Email Click Rate Calculator
Calculate email click-through rate (CTR) and click-to-open rate (CTOR) with separate formulas and worked examples showing exactly how the two rates differ.
Email Open Rate Calculator
Calculate email open rate from emails opened and emails delivered, with worked examples and notes on how tracking-pixel blocking affects the number.
Email ROI Calculator
Calculate email campaign ROI from revenue and campaign cost, with worked examples showing how low send costs shape email's return relative to other channels.
LTV:CAC Ratio Calculator
Calculate the LTV to CAC ratio and see where it falls against standard thresholds for unhealthy, below-target, healthy, and very-high acquisition economics.
Marketing ROI Calculator
Calculate marketing ROI from revenue and campaign cost, with worked examples showing how the profit-to-cost ratio translates into a percentage return.
NPS Calculator
Calculate Net Promoter Score (NPS) from promoter and detractor counts to measure customer loyalty and satisfaction.
ROAS Calculator
Calculate Return on Ad Spend (ROAS) from revenue and ad spend to measure advertising profitability as a ratio.
Social Media Engagement Rate Calculator
Calculate social media engagement rate from likes, comments, shares, and follower count to measure genuine audience interaction.
Unsubscribe Rate Calculator
Calculate email unsubscribe rate from unsubscribe count and emails delivered to monitor list health and campaign performance.
Marketing Spend, Justified With Numbers
Every marketing channel can be made to look good with the right metric in isolation — the numbers that actually matter are the ones that connect spend to real, retained revenue. These eleven calculators cover that connective math.
Popular Marketing Calculators
- Marketing ROI Calculator — measures return generated per dollar of marketing spend.
- A/B Test Calculator — checks whether a difference between two test variants is statistically significant.
- Email Open Rate Calculator — calculates the percentage of sent emails that were opened.
Related: Advertising Calculators for paid channel specifics, Business Calculators for broader company metrics.