MRR & ARR Calculator

Turn a paying customer count and average revenue per account into monthly and annual recurring revenue. Calculates in your browser.

MRR

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ARR-

Show the math

Monthly recurring revenue is customers times average revenue; ARR annualises it:

MRR = customers × ARPU

ARR = MRR × 12

Only count recurring subscription revenue, one-off setup or service fees do not belong in MRR. All math runs in your browser.

What this does

An MRR & ARR calculator turns a paying customer count and average revenue per account into monthly and annual recurring revenue.

How to use it

  1. Enter your paying customers.
  2. Enter average revenue per account.
  3. Read the MRR.
  4. Read the ARR.

How it works

Count only recurring subscription revenue — exclude one-off setup fees and services.

MRR = customers × ARPU; ARR = MRR × 12

Understanding your result

MRR is your predictable monthly subscription revenue and ARR is simply that annualised. Count only recurring revenue and leave out one-off setup fees and services, or the figures overstate the stable base. These numbers anchor most other SaaS metrics, so keeping them clean matters.

Example

200 customers at $50 each is $10,000 MRR and $120,000 ARR.

Sources & methodology

Last updated .

Frequently asked questions

How is MRR calculated?

Multiply your paying customers by the average revenue per account per month. ARR is MRR times 12.

What counts towards MRR?

Only recurring subscription revenue. One-off setup fees and services should be excluded.

Is my data stored?

No. Everything is calculated locally in your browser.