SaaS Metrics Calculator

Calculate essential SaaS metrics including MRR, ARR, churn rate, customer lifetime value, CAC payback period, and LTV:CAC ratio. Get a health scorecard for your SaaS business and 12-month revenue projections.

Monthly Subscribers

ARPU ($)

Average Revenue Per User (monthly)

Monthly Churn Rate (%)

Customer Acquisition Cost ($)

Gross Margin (%)

Monthly Growth Rate (%)

New customer growth rate for projections

Expansion Revenue (%)

Monthly upsell/cross-sell revenue as % of base

Monthly Recurring Revenue (MRR)

$24.5K

ARR

$294.0K

Annual Recurring Revenue

LTV

$784.00

Customer Lifetime Value

Avg. Lifespan

20.0 mo

Average Customer Lifespan

Annual Churn

46.0%

Yearly Customer Loss

Monthly Revenue Breakdown

Gross Profit

COGS

Gross Profit: $19,600.00 (80%)

COGS: $4,900.00 (20.0%)

LTV = $49 ARPU x 80% margin / 5% churn = $784.00

SaaS Health Scorecard

LTV:CAC Ratio

3.9:1Good

Good — Healthy business model. Customer value significantly exceeds acquisition cost.

Monthly Churn

5.0%Needs Work

Above average churn. Focus on onboarding, customer success, and product value.

Gross Margin

80.0%Excellent

Excellent SaaS margins typical of software-first businesses.

CAC Payback

5.1 monthsExcellent

Rapid payback allows aggressive reinvestment in growth.

Net Revenue Retention

97.0%Needs Work

Net contraction: losing more revenue than gaining from existing customers.

Overall Health Score

3.0 / 4.0

Good Health

Unit Economics

LTV:CAC Ratio

3.9:1

CAC Payback

5.1 mo

Net Revenue Retention

97.0%

Revenue per Customer

$49.00

per month

Gross Profit / Customer

$39.20

per month

LTV - CAC

$584.00

net value per customer

LTV vs. CAC Visualization

$200.00

CAC

$784.00

LTV

12-Month Revenue Growth Projection

Net growth rate: 0.0%/mo | Projected MRR growth: 0.0%

M10

M11

M12

$0$12.3K$24.5K

Month	Subscribers	MRR	New	Churned	Cumulative
Now	500	$24,500.00	--	--	$24.5K
M1	500	$24,500.00	+25	-25	$49.0K
M2	500	$24,500.00	+25	-25	$73.5K
M3	500	$24,500.00	+25	-25	$98.0K
M4	500	$24,500.00	+25	-25	$122.5K
M5	500	$24,500.00	+25	-25	$147.0K
M6	500	$24,500.00	+25	-25	$171.5K
M7	500	$24,500.00	+25	-25	$196.0K
M8	500	$24,500.00	+25	-25	$220.5K
M9	500	$24,500.00	+25	-25	$245.0K
M10	500	$24,500.00	+25	-25	$269.5K
M11	500	$24,500.00	+25	-25	$294.0K
M12	500	$24,500.00	+25	-25	$318.5K

End-of-Year MRR

$24,500.00

End-of-Year Subscribers

500

MRR Growth (12mo)

+0.0%

SaaS Industry Benchmarks

Metric	Good	Great	Elite
Monthly Churn Rate	< 5%	< 2%	< 1%
LTV:CAC Ratio	> 3:1	> 5:1	> 7:1
CAC Payback	< 18 mo	< 12 mo	< 6 mo
Gross Margin	> 60%	> 75%	> 85%
Net Revenue Retention	> 100%	> 110%	> 130%

Benchmarks vary by market segment. B2B SaaS typically has lower churn than B2C. Enterprise SaaS aims for higher NRR through expansion revenue.

How SaaS Metrics Are Calculated

MRR (Monthly Recurring Revenue)

MRR = Subscribers x ARPU

LTV (Customer Lifetime Value)

LTV = ARPU x Gross Margin / Monthly Churn Rate

Represents the total gross profit expected from a single customer over their entire relationship.

LTV:CAC Ratio

LTV:CAC = Customer Lifetime Value / Customer Acquisition Cost

A ratio below 1:1 means you spend more to acquire a customer than they generate. 3:1 is the widely accepted healthy target. Above 5:1 may indicate underinvestment in growth.

Net Revenue Retention (NRR)

NRR = (1 - Monthly Churn Rate + Expansion Revenue %) x 100

NRR above 100% means existing customers generate more revenue over time despite churn, a strong indicator of product-market fit.

Annual Churn Rate

Annual Churn = 1 - (1 - Monthly Churn)^12

Note: annual churn is NOT simply monthly churn x 12. A 5% monthly churn compounds to ~46% annual churn.

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How to Use SaaS Metrics Calculator

1Enter your subscriber count and average revenue per user.
2Input monthly churn rate and customer acquisition cost.
3Set your gross margin percentage.
4Review your metrics dashboard and health scorecard.

Frequently Asked Questions

What are the most important SaaS metrics?▾

Key metrics include MRR (Monthly Recurring Revenue), ARR (Annual Recurring Revenue), churn rate, LTV (Customer Lifetime Value), CAC (Customer Acquisition Cost), and the LTV:CAC ratio. Together they indicate business health and growth potential.

What is a good LTV:CAC ratio?▾

A LTV:CAC ratio of 3:1 or higher is generally considered healthy — meaning you earn 3x what you spend to acquire each customer. Below 1:1 means you're losing money on each customer. Above 5:1 may indicate under-investment in growth.

How is churn rate calculated?▾

Monthly churn rate = (Customers Lost in Month / Customers at Start of Month) × 100. A healthy B2B SaaS typically has 2-5% monthly churn. B2C SaaS may see 5-10%. Lower churn dramatically increases LTV.

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About SaaS Metrics Calculator

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