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Month Over Month Calculator

Calculate Month-over-Month (MoM) percentage growth rate, net difference, and multi-month growth trends.

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$

MoM growth rate

+25.00%

Percentage change from the previous month

Net change

+$2,500.00

Absolute dollar difference

Growth multiplier

1.2500x

Current divided by previous

Annualized run-rate

+1355.19%

12 months of the same MoM rate compounded

Projected next month

$15,625.00

Current value grown at the same MoM rate

How we calculated this

Open to see each step from your inputs to the result.

  1. 1. Calculate net change

    Net Change=Current−Previous\text{Net Change} = \text{Current} - \text{Previous}

    Net Change = $12,500.00 - $10,000.00 = +$2,500.00

  2. 2. Calculate MoM growth rate

    MoM Growth %=Current−PreviousPrevious×100\text{MoM Growth \%} = \frac{\text{Current} - \text{Previous}}{\text{Previous}} \times 100

    MoM Growth = ($2,500.00 / $10,000.00) * 100 = +25.00%

  3. 3. Calculate growth multiplier

    Multiplier=CurrentPrevious\text{Multiplier} = \frac{\text{Current}}{\text{Previous}}

    Multiplier = $12,500.00 / $10,000.00 = 1.2500x

  4. 4. Annualize the monthly run-rate

    Annualized %=(CurrentPrevious)12−1×100\text{Annualized \%} = \left(\frac{\text{Current}}{\text{Previous}}\right)^{12} - 1 \times 100

    Annualized = (1.2500^12 - 1) * 100 = +1,355.19%

  5. 5. Project next month at the same MoM rate

    Projected=Current×(1+MoM Growth100)\text{Projected} = \text{Current} \times \left(1 + \frac{\text{MoM Growth}}{100}\right)

    Projected = $12,500.00 * (1 + 25.00 / 100) = $15,625.00

Report tool

What is month-over-month (MoM) growth?

Month-over-month (MoM) growth measures how a metric changed from one calendar month to the next. Businesses, investors, and analysts use MoM to spot short-term momentum in revenue, subscribers, website traffic, or portfolio value before longer trends appear in quarterly or annual reports. All math runs in your browser.

MoM is a relative change: it compares the current period to the immediately preceding period of equal length. For multi-year compounding and annualized benchmarks, the CAGR calculator extends the same logic across several years. To model continuous compounding scenarios, see the compound growth calculator. When evaluating per-share earnings momentum across reporting quarters, the EPS growth calculator applies parallel percentage-change math to corporate profits.

Month-over-month formulas

Net change is the absolute dollar (or unit) difference between the current and previous month:

Net Change=Current−Previous\text{Net Change} = \text{Current} - \text{Previous}

MoM growth percentage expresses that change relative to the prior month base:

MoM Growth %=Current−PreviousPrevious×100\text{MoM Growth \%} = \frac{\text{Current} - \text{Previous}}{\text{Previous}} \times 100

The growth multiplier (also called the growth factor) shows how many times larger the current value is compared to the previous month:

Multiplier=CurrentPrevious\text{Multiplier} = \frac{\text{Current}}{\text{Previous}}

If the same monthly rate continued for a full year, the annualized run-rate compounds that monthly multiplier across 12 periods:

Annualized %=(CurrentPrevious)12−1×100\text{Annualized \%} = \left(\frac{\text{Current}}{\text{Previous}}\right)^{12} - 1 \times 100

Projecting the next month assumes the current MoM rate repeats once more:

Projected Next Month=Current×(1+MoM Growth100)\text{Projected Next Month} = \text{Current} \times \left(1 + \frac{\text{MoM Growth}}{100}\right)

Worked example

A SaaS company reports $10,000 in monthly recurring revenue (MRR) last month and $12,500 this month.

  • Net change = $12,500 - $10,000 = +$2,500
  • MoM growth = ($2,500 / $10,000) * 100 = +25.00%
  • Multiplier = $12,500 / $10,000 = 1.2500x
  • Annualized run-rate = (1.25^12 - 1) * 100 = +1,355.19% (if 25% MoM repeated for 12 months)
  • Projected next month = $12,500 * 1.25 = $15,625.00

A 25% MoM rate compounds dramatically when annualized. That figure is a hypothetical run-rate, not a forecast. Real businesses rarely sustain the same monthly percentage indefinitely.

When to use MoM vs other growth metrics

MoM is best for spotting near-term acceleration or deceleration. It reacts quickly to seasonality, promotions, and one-time events, so a single strong or weak month can skew the reading. Analysts often pair MoM with trailing averages or year-over-year comparisons to filter out noise.

For revenue and cost analysis at the product level, the markup calculator helps isolate pricing power from volume changes. When tracking customer cohort health, the churn rate calculator measures monthly attrition that directly affects recurring revenue MoM trends.

Practical tips for interpreting MoM results

  1. Use consistent periods. Compare full calendar months, not partial weeks. Mixing 28-day and 31-day windows distorts the percentage.
  2. Watch the denominator. A small prior-month base makes even modest absolute gains look like huge percentage jumps. Always read net change alongside the growth rate.
  3. Treat annualized run-rates as upper bounds. Compounding the latest MoM rate across 12 months illustrates scale, not a realistic forecast.
  4. Account for seasonality. Retail revenue often spikes in November and December. A December-to-January MoM decline may be normal even when the business is healthy.

Frequently asked questions

What is the difference between MoM and YoY growth?
Month-over-month (MoM) compares the current month to the immediately preceding month. Year-over-year (YoY) compares the current month to the same month one year earlier. MoM captures short-term momentum; YoY removes most seasonal effects.
Can MoM growth be negative?
Yes. When the current month value is lower than the previous month, net change and MoM growth are negative. A -10% MoM rate means the metric fell by 10% relative to the prior month base.
Why does the annualized run-rate look so high?
The annualized figure assumes the same monthly multiplier repeats for 12 consecutive months. Even a moderate MoM rate compounds into a large annual figure. For example, 10% MoM annualizes to roughly 214%, not 120%.
What happens if the previous month value is zero?
MoM growth percentage is undefined when the previous value is zero because division by zero is not valid. The calculator requires a positive previous month value to compute growth rates. Net change and projected values still update.
How is the projected next month value calculated?
The projection applies the current MoM growth rate to the current month value: projected = current * (1 + MoM growth / 100). If MoM growth is +25% and current is $12,500, the projection is $15,625.
Are my inputs saved on a server?
No. All calculations run locally in your browser. Changing inputs updates the page URL so you can bookmark or share a specific scenario.

Resources and references

The formulas and methods in this calculator were checked against these independent sources.