ARR Growth Calculator
ARR Growth: Growth = (ending ARR ÷ starting ARR) − 1. Methodology stated, your own inputs only.
In short
ARR Growth: Growth = (ending ARR ÷ starting ARR) − 1. Methodology stated, your own inputs only.
Formula: Growth = (ending ARR ÷ starting ARR) − 1. Compound growth per year = (ending ÷ starting)^(1 ÷ years) − 1.
What this calculator does
ARR Growth: Growth = (ending ARR ÷ starting ARR) − 1. Methodology stated, your own inputs only. Worked example, questions and limitations included.
Use it to turn Currency (symbol only, never converted), ARR at start of period, ARR at end of period, Number of years between them into a checked result you can compare, copy, or rerun with different assumptions.
The page shows the formula, a numeric worked example, and the assumptions that affect this saas calculation.
Inputs and what they mean
- Currency (symbol only, never converted)
- — choice value.
- ARR at start of period
- — number value.
- ARR at end of period
- — number value.
- Number of years between them
- — Use 1 for simple period-over-period growth..
How to use it
- Enter each value in the unit shown next to the box (use the unit converter first if your numbers are in other units).
- Check the breakdown to see every intermediate step.
- Read the limitations before relying on the result.
Formula
Methodology: total period growth and compound growth rate per year (CMGR/CAGR style).
Compound rate smooths over the path; it isn't the growth of any single period.
Use normalised ARR figures at both points.
Growth = (ending ARR ÷ starting ARR) − 1. Compound growth per year = (ending ÷ starting)^(1 ÷ years) − 1.
Inputs used: Currency (symbol only, never converted), ARR at start of period, ARR at end of period, Number of years between them.
Worked example
Two years
- Total = 125%.
- Annual compound = 2.25^(1/2) − 1 = 50%.
Reading the result
The headline figure is the main answer. Any breakdown underneath shows the parts that make it up, so you can check the working and see what changes when you adjust an input.
Limitations and assumptions
- Two points only.
- Doesn't break down new, expansion and churn.
- Results are educational estimates built only from the figures you enter. They are not personalised investment, tax, legal or accounting advice. Rates, growth and discount assumptions are always yours to choose.
- The result depends on the values you enter for this arr growth calculator; it does not supply missing rates, rules, prices, dates, or assumptions for you.
Reference: OpenStax
Last reviewed:
Common questions
Why compound growth?
Averaging monthly percentages overstates growth; the compound rate reproduces the actual end value. Check the formula, example, and limitations on this page before using the result for a real saas decision.
What counts as MRR/ARR?
Recurring subscription revenue only — see the MRR and ARR calculators. Check the formula, example, and limitations on this page before using the result for a real saas decision.
What is a good value?
We don't assume a benchmark. Compare against your own plan and history.
How do I use the ARR Growth Calculator?
Enter the required values for Currency (symbol only, never converted), ARR at start of period, ARR at end of period, Number of years between them. The calculator applies the formula on this page and shows the main result with any supporting breakdown so you can check the arithmetic.
What formula does the ARR Growth Calculator use?
Growth = (ending ARR ÷ starting ARR) − 1. Compound growth per year = (ending ÷ starting)^(1 ÷ years) − 1. The visible formula section above lists the calculation path and the edge cases the page handles, so the result can be checked without relying on the form alone.
Can the ARR Growth Calculator be used for exact decisions?
Use it as a calculation aid, not as a substitute for checking the underlying rule, contract, policy, or professional advice that applies to your situation. When a result depends on local rules, personal details, prices, or dates, enter those values yourself and confirm them before acting.
Sources
Method based on OpenStax.
Cite this page
Free Calculator. (2026, October 15). ARR Growth Calculator. https://freecalculator.tech/tools/arr-growth-calculator
"ARR Growth Calculator." Free Calculator, 15 Oct. 2026, https://freecalculator.tech/tools/arr-growth-calculator.
ARR Growth Calculator — Free Calculator, https://freecalculator.tech/tools/arr-growth-calculator
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