How "Girl Math" can make you an Ecommerce millionaire?

"Girl Math" meme originated from a fun TikTok trend to describe how women justify large impulse spending (Forbes, 2024).

Although lighthearted, it reveals a lot about customer behaviour that could be leveraged to improve your brand's revenue per session aka the golden standard metric in Conversion Rate Optimisation.

In this article, we explore three "Girl Math" examples that have direct e-commerce implications and share actionable strategies to leverage these insights for your online store.

Whether it's encouraging higher basket values, emphasizing the long-term value of luxury items, or implementing loyalty schemes, "Girl Math" provides creative ways to enhance customer engagement and drive sales.

Let's dive into how you can use this trend to your advantage.

3 Girl Math examples with E-commerce implications:

1. Girl Math logic: Spend £20 more to save on £5 delivery cost

Ecomm implication: Customers are more likely to increase their basket size to meet the free delivery threshold.

Therefore,

Communicate (either via a popup or progress indicator) that users can get free delivery,

IF they add X more worth of products to their order.

See it in action from True Classic.

2. Girl Math logic: If you buy a £500 bag and use it for 2 years every day, its per day cost is less than £1, and anything under £5 is basically free.

Ecomm implication: Include a PER USE/WEAR for high-price luxury items.

See example from Dagsmejan.

3. Girl Math logic: Once money is loaded onto an app (like Starbucks), those purchases are “free.”

Ecomm implication: Enable a loyalty scheme that allows users to convert purchases to points and use money to buy points at a discount.

See Example from Boots

Would you use Girl Math to optimise your e-commerce store?