Create a c Chart in Excel

Use c Charts for counted data:
...when the opportunity is large but the number of defects is small

For example, you might be counting injuries at a plant or medication errors in a hospital. The opportunity for errors is large but the actual occurences are low.

Two Examples of c Chart data:

c chart data examples

c chart in Excel

It's Easy to Draw a c Chart in Excel Using QI Macros

QI Macros adds a new menu to Excel and provides two ways to create charts:

control charts in excel

Run a macro on data you have already collected

  1. Click and drag over the data to select it.
  2. Click on QI Macros > Control Charts (SPC) > Attribute (c,np,p,u,g,t) > c
  3. QI Macros does the math and draws the chart.
  4. QI Macros also performs stability analysis. Unstable points or trends turn red and should be investigated.

Input Data into a Fill-in-the-Blanks Template

  1. Click on QI Macros > Control Chart Templates > Attribute (c,np,p,u,g,t) > c Chart
  2. Input your data into the yellow shaded area.
  3. The chart is drawn as the data is input.
  4. Run stability analysis using the chart tools menu.

QI Macros c chart template in Excel


I just made my first charts and QI Macros were very easy and user friendly. This is going to be a great tool.

- Jim Welsh
Lennox Industries

Learn More...

Why Choose QI Macros Over Other Control Chart Software?



  • Only $329 USD - less with quantity discounts
  • No annual subscription fees
  • Free technical support

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Easy to Use

  • Works right in Excel
  • Create a chart in seconds
  • Easy to customize & share charts

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