A free, interactive MRR calculator for SaaS founders. Adjust plan price, customer count, and monthly churn rate to model MRR, ARR, and growth projections. No signup, no Stripe connection required.

## What this page covers
A standalone calculator for modeling Monthly Recurring Revenue and its sensitivity to plan price, customer count, and churn.

## What it computes
- MRR — sum of all active subscription monthly revenue
- ARR — annualized MRR (MRR × 12)
- Growth projections — month-by-month MRR trajectory given net growth rate
- Sensitivity — how 1pp changes in churn rate, customer count, or plan price affect MRR over 12 months

## Inputs
- Plan price (monthly subscription amount)
- Customer count (active paying customers)
- Monthly churn rate (percentage of customers lost each month)

## Why it's useful
For founders pre-Stripe-connection, this models the levers in their business. A 1pp reduction in churn typically delivers more long-term MRR than a comparable increase in new acquisition. The calculator visualizes that asymmetry.

## Limits of the free calculator
This is a single-product model. Real SaaS MRR includes upgrades, downgrades, reactivations, and free trial conversions across multiple plans and pricing tiers. North Metric's full platform computes the actual MRR breakdown from your Stripe data with 5-component movement decomposition (new, expansion, reactivation, churn, downgrade).

For real MRR analysis from your Stripe data, see /platform. For free tier features, see /pricing. All free tools live at /tools.