KKPI Formulas
SaaS KPI Formula

ARPA Formula

ARPA measures average revenue per account and is common in B2B SaaS.

Use the calculator Browse SaaS KPIs
Affiliate resources

Ideas for You

Useful learning resources related to this page. As an Amazon Associate, this site may earn from qualifying purchases at no extra cost to you.

ARPA books Books that help you understand ARPA and related business metrics more deeply. Explore resources → ARPA audiobooks Audiobook searches for learning ARPA while commuting, walking, or working. Explore resources → Startup metrics resources Excel-focused resources for building KPI trackers and dashboard workflows. Explore resources → Subscription business resources Practical resources for turning ARPA into reports, dashboards, and business decisions. Explore resources →

Simple formula

Revenue / Number of Accounts

The formula uses these inputs:

  • Revenue: enter your value in the calculator or spreadsheet.
  • Accounts: enter your value in the calculator or spreadsheet.

Excel formula

Use this Excel formula as a starting point. Replace the sample cell references with the cells in your worksheet.

=IFERROR(B2/C2,0)

Google Sheets formula

In most cases, the Google Sheets version uses the same structure as Excel.

=IFERROR(B2/C2,0)

Power BI DAX measure

Use this DAX pattern as a starting point and rename measures or columns to match your Power BI model.

ARPA =
DIVIDE(
    [Revenue],
    [Accounts]
)

SQL example

This generic SQL pattern can be adapted to your warehouse table names and column names.

SELECT
    /* replace with your formula */ AS arpa
FROM kpi_data;

ARPA calculator

Result—

How to interpret ARPA

Use this KPI with trend data, targets, and related metrics. A single value is less useful than a consistent definition tracked over time.

Important: KPI definitions can vary by company, accounting policy, analytics platform, or reporting standard. Keep the definition consistent when comparing periods.

Common mistakes

  • Mixing different time periods in the numerator and denominator.
  • Using totals that do not match the KPI definition used by your company.
  • Comparing results across teams or industries without context.

Related KPI formulas

Frequently asked questions

What is the ARPA formula?

The common ARPA formula is: Revenue / Number of Accounts.

How do you calculate ARPA in Excel?

Use this Excel formula pattern: =IFERROR(B2/C2,0). Replace the cell references with your own data.

Can this KPI be calculated in Power BI?

Yes. Use the DAX measure on this page as a starting point and adjust table and column names to match your model.