Week-over-Week Calculator

What is Week-over-Week (WoW) Growth?

Week-over-Week (WoW) Growth is a performance metric that measures the percentage change in a specific value (such as revenue, active users, traffic, or sales) from one week to the next. It is popular in early-stage startups, SaaS companies, and digital marketing because it provides rapid feedback on growth campaigns, product releases, and short-term trends.

The WoW Growth Formula

To calculate the percentage growth week-over-week, subtract the previous week's value from the current week's value, divide the result by the previous week's value, and multiply by 100:

$$\text{WoW Growth \%} = \left( \frac{\text{Current Week} - \text{Previous Week}}{\text{Previous Week}} \right) \times 100\%$$

For example, if your website had 1,000 pageviews last week and 1,200 pageviews this week:

$$\text{WoW Growth} = \left( \frac{1,200 - 1,000}{1,000} \right) \times 100\% = 20\%$$

Comparison: WoW vs. MoM vs. YoY

Depending on your objectives, different growth reporting cycles are useful:

• Week-over-Week (WoW): Ideal for micro-monitoring, A/B test feedback, and high-frequency metric tracking.
• Month-over-Month (MoM): Standard for business reporting, board decks, and medium-term planning.
• Year-over-Year (YoY): Crucial for accounting for seasonal variations and long-term viability.