Free tool

MRR & ARR calculator

Enter your customers, average revenue per account, and net monthly growth. Get your MRR and ARR now — and where they land 12 months from now.

Net growth = new + expansion − churned, per month. For churn, lifetime, and LTV, use the churn calculator.

MRR today

$9,600

ARR today

$115,200

MRR in 12 months

$24,174

ARR in 12 months

$290,093

12-month MRR projection

Put revenue on every customer record See how the spine ranks by revenue

Beyond the number

MRR is the metric — the why behind it is the leverage.

Revenue per account, not per spreadsheet. When each customer's MRR lives on their record, you can rank feedback and roadmap by the money behind it — not vote count.

Growth has a cause. Net growth nets out churn. Pair this with the churn calculator to see how much of your curve is leaking out the bottom.

Projections age fast. A static model is stale the day a deal closes. On a connected spine, MRR updates from your billing connector instead of a quarterly rebuild.

FAQ

MRR & ARR questions

What is MRR and how is it calculated?
MRR (monthly recurring revenue) is the predictable subscription revenue your customers pay each month. The simplest formula is customers × average revenue per account (ARPA). For example, 120 customers at $80/mo is $9,600 MRR.

How do I calculate ARR from MRR?
ARR (annual recurring revenue) is simply MRR × 12. It annualizes your current monthly run rate — it does not add growth. To project forward, grow MRR each month first, then annualize the later figure.

What is a good monthly growth rate for MRR?
It depends on stage. Early-stage SaaS often targets 5–15% net monthly MRR growth; that compounds fast — a steady rate roughly triples MRR over a year. Net growth already accounts for churn, so watch it alongside your churn rate.

Does this calculator account for churn?
The growth input is your NET monthly growth — new and expansion revenue minus churned revenue. To model churn explicitly (retention, lifetime, LTV), use the churn-rate calculator linked below.

More free tools: churn calculator · RICE prioritization · Rule of 40 · stack cost.