# Funnel Chart

**Category:** charts  
**Short Description:** A visualization that displays sequential data as it moves through a process, typically showing decreasing values at each stage.  
**Last Updated:** 2026-05-30T00:00:00Z

## Definition

Funnel charts represent data flowing through a process with sequential stages, where values typically decrease at each step. The chart's width narrows proportionally to the values, creating a funnel shape that visually emphasizes conversion rates and drop-offs between stages. They are particularly effective for visualizing customer journeys, sales processes, and conversion funnels.

## Examples

- E-commerce conversion funnel showing customer journey stages

## FAQs

### What is a funnel chart?

A funnel chart visualizes a sequential process as a series of stages that get progressively narrower, where the width (or length) of each stage is proportional to the count of items remaining at that step. It's named for its shape: many items enter at the top and fewer survive each stage, like a funnel. It's the standard view for conversion processes — visitors → leads → trials → customers.

### When should I use a funnel chart?

Use one for any ordered, monotonically shrinking process where you want to see where the biggest drop-offs happen — marketing and sales funnels, checkout flows, onboarding steps, application pipelines. Its strength is making the stage-to-stage attrition obvious so you can target the worst leak. Don't use it when stages aren't sequential, when counts can grow between stages, or for plain category comparison (use a bar chart).

### How is a funnel chart different from a bar chart?

A bar chart compares independent categories in any order. A funnel chart implies a strict sequence where each stage is a subset of the one before, and the narrowing shape communicates progressive loss. You can build a funnel from a sorted horizontal bar chart, and many teams do — but the funnel's tapering form signals 'this is a flow with drop-off', which a generic bar chart doesn't.

### How do I read drop-off and conversion in a funnel?

Compare each stage to the one above it: the percentage that advances is the step conversion rate, and the percentage lost is the drop-off. The stage with the steepest narrowing is your biggest leak and usually the highest-leverage place to optimize. Also track the overall conversion (final stage ÷ first stage). Label each stage with both the absolute count and the step-over-step rate for the clearest read.

### Should funnel stages always decrease?

In a true funnel, yes — each stage should be a subset of the previous one, so counts only stay the same or fall. If a later stage shows more items than an earlier one, the stages aren't a strict sequence (users skipped or re-entered steps) and a funnel chart will mislead. In that case use a flow diagram (like a Sankey) that can show branching and back-flow, or rethink how the stages are defined.

## Related Terms

### Alternatives

- **Bar Chart**: Shows comparison of categorical data using rectangular bars
- **[Sankey Diagram](/resources/glossary/charts/sankey-diagram)**: Shows flow and quantity between nodes
- **[Vertical Bar Chart](/resources/glossary/charts/vertical-bar-chart)**: Shows sequential stages with values that can be directly compared
- **[Area Chart](/resources/glossary/charts/area-chart)**: Shows trends over time with emphasis on magnitude, can visualize funnel stages differently

## Featured in topic hubs

- [Data Visualization](/resources/topics/data-visualization)