★ Mercerville, NJ

Build Confidence, Focus, and Discipline.

Martial arts training for kids ages 4–12 in Mercerville. We help children develop life skills that last a lifetime.

Structured Programs for Every Age

Our curriculum is specifically designed to meet children where they are developmentally.

Little Ninjas Martial Arts Ages 4–6

Little Ninjas

A fun, high-energy introduction to martial arts focusing on following directions and basic coordination.

  • Following directions & listening
  • Basic coordination & balance
  • Focus and attention
  • Fun introduction to fitness
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Kids Martial Arts Ages 7–12

Kids Martial Arts

Building confident leaders through structured martial arts training and our belt progression system.

  • Self-discipline & respect
  • Goal setting through belt ranks
  • Bully defense & confidence
  • Physical fitness & strength
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The UKF Difference

Where Kids Build Confidence and Discipline

We aren't a traditional, silent dojo. We are a modern kids training academy where physical activity meets character development in a high-energy environment.

Certified Instructors

Professionally trained to work with children

Smaller Class Sizes

More individual attention for your child

Belt Progression

Structured goal setting they can see

Life Skills Focus

Confidence, discipline, and respect

What Parents Notice First

Better focus during homework and school

Stronger confidence in social situations

Improved discipline and respect at home

Looking forward to physical fitness

Parent Parent Parent Parent
Join 500+ local families

Step Inside Our Academy

A safe, clean, and high-energy environment where your child can thrive.

How to Get Started

Getting started is simple, pressure-free, and designed to ensure we're the right fit for your family.

1

Book Intro

Reserve your spot online in under a minute.

2

Meet Instructor

Arrive early to tour the academy and meet the team.

3

Take Class

Your child participates in a fun, beginner-friendly class.

4

Decide

If they love it, we'll show you the membership options.

Loved by Parents in Mercerville

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Google Review

"My son, who is 5 years old, has been doing karate at UKF for the past year and absolutely loves it! Out of all the sports and activities that he does, karate is his favorite. He loves going to class because the instructors teach them fun lessons. I love the fact that he is exercising and learning about good sportsmanship."

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Michael Firestone
Google Review
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Google Review

"My lil crazy did a trial class and loved it! So we signed him up and man can this lil munchkin do some push ups. They keep you up to date on all classes, tests, and extra activities. I highly recommend especially if you have a child that has a challenge focusing and has a lot of energy. The instructors are amazing and work one on one if need be."

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Erika Blackford
Google Review
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Google Review

"Great staff. They are trained to work with special needs kids and is a no pressure place. They are interested in the kids as people and spend time getting to know them. My son has thrived since starting here. Grades have improved too!"

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Loretta Grace
Google Review
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Google Review

"UKF has quickly become a very special place for our family. Mr Tucker is an amazing teacher that sees each child and meets them at their level. His classes are the right amount of fun and challenge for my children and it has them feeling great about themselves."

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UKF Parent
Google Review
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Google Review

"We are so happy to be a part of UKF. The instructors are very professional, kind, patient and knowledgeable, they are great with kids. My son who had separation anxiety and cried during the first session, now loves going to his class every week! He is more disciplined, focused and self controlled now."

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UKF Parent
Google Review
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Google Review

"My son has been enrolled for 4 years and has had a great experience throughout! The instructors are very personable and build great rapport with the kids. Classes have a nice balance of teaching and fun activities. My son has gained physical skills, learned discipline and grown more in confidence."

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UKF Parent
Google Review

Looking for other programs?

We also offer classes for teens, adults, and special events.

Teen & Adult Martial Arts
Kickboxing Fitness
Birthday Parties

UKF Martial Arts – Mercerville, NJ

Ready to Get Started?

Book your child's free intro class today and see the difference martial arts can make.