What Size Basketball Should Kids Use? Canada Basketball Age Guide

The recommended basketball size changes as young players develop.

Canada Basketball's Youth Rules Guidelines use smaller basketballs for younger age groups and then increase the ball size as players progress through the developmental stages.

For U7–U10 players, the guideline recommends a Size 5 basketball. At U11–U12, players move to a Size 6 basketball. At U13–U14, the recommended size differs for girls and boys.

This guide summarizes the basketball sizes listed in the Canada Basketball Youth Rules Guidelines.

Important: This article covers only the age groups included in the Canada Basketball Youth Rules Guidelines: U7–U14. The document does not provide ball-size recommendations for older age groups.

Basketball Size by Age

What Size Basketball Should U7–U8 Players Use?

Canada Basketball recommends a Size 5 basketball measuring 27.5 inches for U7–U8 players.

This age group is part of the FUNdamentals stage.

The guidelines also recommend, where possible, using a lightweight Size 5 basketball at the U8 FUNdamentals stage.

What Size Basketball Should U9–U10 Players Use?

Both recreational and competitive U9–U10 players use a Size 5 basketball measuring 27.5 inches under the Canada Basketball guidelines.

U9–U10 is part of the Learn to Train stage.

For the recreational U10 Learn to Train stage, Canada Basketball also recommends a lightweight Size 5 ball where possible.

What Size Basketball Should U11–U12 Players Use?

Canada Basketball recommends a Size 6 basketball measuring 28.5 inches for both recreational and competitive U11–U12 players.

This is the first age group in the Youth Rules Guidelines where players move up from Size 5 to Size 6.

U11–U12 remains part of the Learn to Train stage.

What Size Basketball Should U13–U14 Girls Use?

For girls in both recreational and competitive U13–U14 basketball, Canada Basketball recommends a:

Size 6 basketball measuring 28.5 inches.

U13–U14 is part of the Train to Train stage.

What Size Basketball Should U13–U14 Boys Use?

For boys in both recreational and competitive U13–U14 basketball, Canada Basketball recommends a:

Size 7 basketball measuring 29.5 inches.

This is the first age group covered by the document where boys move to Size 7.

Why Do Younger Players Use Smaller Basketballs?

Canada Basketball explains that smaller basketballs are recommended for younger players because the equipment should better match their developmental stage and physiological capabilities.

The document specifically mentions factors such as:

• hand size
• developing ability levels

According to the guidelines, a smaller, lighter basketball can provide:

• greater control
• more efficient technique
• a greater likelihood of success when shooting
• a greater likelihood of success when passing
• a greater likelihood of success when dribbling

The purpose is to make the equipment more appropriate for the developing player.

Why Does Basketball Size Change With Age?

Ball size is one of several parts of the game that change as players develop.

The same framework also adjusts factors such as:

• basket height
• court size
• game format
• scoring
• playing time
• defensive tactics

The overall approach is to match the game more closely to the player.

Does Recreational vs. Competitive Basketball Change the Ball Size?

For the age groups covered in the document, no.

Canada Basketball lists the same ball size for recreational and competitive players within each age group.

That means:

• U9–U10 recreational and competitive both use Size 5
• U11–U12 recreational and competitive both use Size 6
• U13–U14 recreational and competitive both use Size 6 for girls and Size 7 for boys

Other rules may differ between recreational and competitive basketball, but the recommended ball size does not change within these age groups.

What Is the Basketball Size Progression From U7 to U14?

The progression in the Canada Basketball Youth Rules Guidelines is:

U7–U8
Size 5 (27.5")

↓

U9–U10
Size 5 (27.5")

↓

U11–U12
Size 6 (28.5")

↓

U13–U14 Girls
Size 6 (28.5")

U13–U14 Boys
Size 7 (29.5")

This progression moves players from smaller youth equipment toward larger basketballs as they advance through the developmental stages covered in the guidelines.

Basketball Size by Age FAQ

What size basketball should a 7-year-old use?

Canada Basketball recommends a Size 5 basketball measuring 27.5 inches for U7–U8 players.

What size basketball should an 8-year-old use?

A Size 5 basketball measuring 27.5 inches.

Canada Basketball also recommends a lightweight Size 5 basketball for the U8 FUNdamentals stage where possible.

What size basketball should a 9-year-old use?

Canada Basketball recommends a Size 5 basketball measuring 27.5 inches for U9–U10 players.

What size basketball should a 10-year-old use?

A Size 5 basketball measuring 27.5 inches.

The same size is listed for recreational and competitive U9–U10 basketball.

What size basketball should an 11-year-old use?

Canada Basketball recommends a Size 6 basketball measuring 28.5 inches for U11–U12 players.

What size basketball should a 12-year-old use?

A Size 6 basketball measuring 28.5 inches for both recreational and competitive U11–U12 basketball.

What size basketball should a 13-year-old girl use?

Canada Basketball recommends a Size 6 basketball measuring 28.5 inches for U13–U14 girls.

What size basketball should a 13-year-old boy use?

Canada Basketball recommends a Size 7 basketball measuring 29.5 inches for U13–U14 boys.

What size basketball should a 14-year-old girl use?

A Size 6 basketball measuring 28.5 inches.

What size basketball should a 14-year-old boy use?

A Size 7 basketball measuring 29.5 inches.

Do U10 recreational and competitive players use different basketball sizes?

No. Canada Basketball lists Size 5 (27.5") for both.

Do U12 recreational and competitive players use different basketball sizes?

No. Both use Size 6 (28.5").

What size basketball should players older than U14 use?

The Canada Basketball Youth Rules Guidelines used for this article cover U7–U14. They do not provide basketball-size recommendations for older age groups, so this article does not extend the chart beyond U14.

Ball Size by Age: Quick Recap

• U7–U10: Size 5
• U11–U12: Size 6
• U13–U14 girls: Size 6
• U13–U14 boys: Size 7

Canada Basketball's reasoning is that a smaller, lighter ball fits younger players' hands and strength, so they can control it and learn good technique.

For every age group and rule in one place, see our Canada Basketball youth rules guide.

Source

Canada Basketball — Canada Basketball Youth Rules Guidelines

This article is based exclusively on the Canada Basketball Youth Rules Guidelines. Canada Basketball notes that implementation of its youth guidelines may vary between regions and organizations.