---
title: "What is Bounce Rate?"
description: "直帰率の意味と関連する項目についてご紹介いたします。"
url: https://help.flow-insight.com/en/articles/23-what-is-bounce-rate
collection: "KPI glossary"
updated: 2026-08-06
language: en
alternates: [ja]
---

# What is Bounce Rate?

直帰率の意味と関連する項目についてご紹介いたします。

## Definition

This explains the meaning and structure of Bounce Rate, a metric for evaluating customers who left quickly after visiting.

Bounce Rate is a metric showing "the percentage (%) of visitors who left the store within a set amount of time."

Bounce Rate is made up of two KPIs:

-   The number of customers who visited the store (= Traffic)
    
-   The number of customers who left the store within a set amount of time (= Bounced Visitors)
    

Since Bounce Rate represents "the percentage of visitors who left the store within a set amount of time," it's expressed as a ratio.

## Formula

**Formula: Bounce Rate (%) = Bounced Visitors ÷ Traffic × 100**

To calculate Bounce Rate, you need to decide in advance how much time defines a customer as having "left quickly."

Our default setting is within 1 minute, but since this varies by store size, please feel free to let us know if you'd like it changed.

## Why it matters

Bounce Rate is a metric that shows whether a store has many customers leaving quickly for some reason.

Measure data across multiple stores and use it to reduce bounced visitors and create more purchase opportunities.

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If you have any questions or feedback, please contact support at [support@flow-solutions.com](mailto:support@flow-solutions.com).