Synchronizing axes in Tableau - Step-by-Step Guide

Introduction

Synchronizing axes in Tableau helps you compare two measures on the same scale. It solves the problem of misleading visuals when two charts have different axis ranges.

When you want to compare sales and profit trends on the same timeline clearly.

When you have two related measures like temperature and humidity and want to see their patterns together.

When you create a dual-axis chart and want both axes to show the same scale for easy comparison.

When you want to avoid confusion caused by different axis ranges in combined charts.

When you want to highlight the relationship between two measures visually.

Steps

Step 1: Drag the first measure to Rows or Columns shelf

- Tableau worksheet

The first chart appears with its own axis

💡 Start with the main measure you want to compare

Step 2: Drag the second measure to the same shelf (Rows or Columns) as the first measure

- Tableau worksheet

A second chart appears next to the first one

💡 This creates two separate axes initially

Step 3: Right-click the second measure's axis

- Axis area on the worksheet

A context menu appears

💡 Make sure you click exactly on the axis numbers

Step 4: Select 'Dual Axis' from the context menu

- Context menu on second axis

Both measures appear on the same chart with two axes

💡 This overlays the two charts

Step 5: Right-click the second axis again

- Second axis on the dual-axis chart

Context menu appears again

💡 This is to synchronize the scales

Step 6: Select 'Synchronize Axis'

- Context menu on second axis

Both axes use the same scale, making comparison easier

💡 If this option is greyed out, check that both measures have compatible data types

Step 7: Format or hide one axis if needed

- Axis formatting options or right-click axis and select 'Show Header' to toggle

Chart looks cleaner with one visible axis

💡 Hiding one axis avoids clutter

Before vs After

Before

Two separate charts with different axis scales: Sales axis from 0 to 1000, Profit axis from 0 to 200

After

One combined chart with dual axes synchronized from 0 to 1000, making sales and profit trends easy to compare

Settings Reference

Dual Axis

📍 Right-click on the second measure's axis in the worksheet

To overlay two charts on the same view

Default: Disabled

Synchronize Axis

📍 Right-click on the second axis after enabling Dual Axis

To make both axes use the same scale for accurate comparison

Default: Disabled

Show Header

📍 Right-click on an axis

To display or hide the axis labels and numbers

Default: Show

Common Mistakes

Trying to synchronize axes before enabling Dual Axis

The 'Synchronize Axis' option is only available after Dual Axis is enabled

First enable Dual Axis, then right-click the second axis to select 'Synchronize Axis'

Using measures with incompatible data types for synchronization

Axes cannot synchronize if measures are not comparable (e.g., date and number)

Ensure both measures are numeric and represent comparable data before synchronizing

Not hiding one axis after synchronization

Shows duplicate axis labels which can confuse viewers

Right-click one axis and uncheck 'Show Header' to hide it for a cleaner look

Summary

Synchronizing axes lets you compare two measures on the same scale in one chart.

You must enable Dual Axis first, then synchronize the axes.

Hide one axis after synchronization to keep the chart clear and easy to read.