Home - At Karate Fit USA, the focus is YOU! | Lawrenceville, NJ

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At Karate Fit USA,
the focus is YOU!

ASK ABOUT OUR NEW STUDENT INTRO OFFER!

We offer small class sizes and age and level-based skills.  If you learn better with structure and attention, you should enjoy training with us! We currently have students from ages 3 to 74, grouped by age and experience to focus on appropriate content. Whatever your starting point, we will help you meet and exceed your goals!

We are a longstanding independent Lawrenceville martial arts academy, not a corporate/chain school, and are proud to have been voted "Best Karate School" by Trentonian readers each year we have been here in the LSC!  And we do more than just "karate": Sensei Swingle has multiple black belts and extensive experience in the US and Japan, and as 5th degree Shihan (Master Instructor) has been Head Instructor since 2018. We focus on personal attention and practical techniques, traditional weapons and Small Circle Jujitsu for enjoyable but effective self-defense training: Less fluff, more stuff!  Private lessons also possible.

UPDATE: We are now also offering Jiu jitsu classes with guest instructors to members and nonmembers alike! Reach out for info, or try an Open Mat session Sundays noon-2:00!!

Contact Sensei Swingle with any questions, or send a message via our Public FB page. (We also have private group pages and YouTube channel for members to give extra support and at-home training help.)

You can also text or call 609-690-9060 and someone will respond ASAP!

Preregister for a free trial class HERE, or click the SIGNUP button above!

Instructors

Schedule

List LayoutList Grid LayoutGrid
11/23/2025 - 11/29/2025
23 Sun 24 Mon 25 Tue 26 Wed 27 Thu 28 Fri 29 Sat
23 Sun
24 Mon
25 Tue
26 Wed
27 Thu
28 Fri
29 Sat
12:00am
1:00am
2:00am
3:00am
4:00am
5:00am
6:00am
7:00am
8:00am
9:00am
10:00am
11:00am
12:00pm
1:00pm
2:00pm
3:00pm
4:00pm
5:00pm
6:00pm
7:00pm
8:00pm
9:00pm
10:00pm
11:00pm

OPEN MAT BJJ/Striking All Lvls with Prof. Matt and Instructors by MattLabs

12 - 2pm
12:00pm - 2:00pm

OPEN MAT BJJ/Striking All Lvls with Prof. Matt and Instructors by MattLabs

OPEN MAT BJJ/Striking All Lvls with Prof. Matt and Instructors by MattLabs
Sunday, November 23 · 12:00pm - 2:00pm

KIDS BJJ by MattLabs

5 - 6pm
5:00pm - 6:00pm

KIDS BJJ by MattLabs

KIDS BJJ by MattLabs
Monday, November 24 · 5:00pm - 6:00pm

Little Ninja Group 1 (3-5 yrs)

5:30 - 6pm
5:30pm - 6:00pm

Little Ninja Group 1 (3-5 yrs)

Book 0/14
Little Ninja Group 1 (3-5 yrs)
Monday, November 24 · 5:30pm - 6:00pm
Book

BJJ Mixed Lvl by MattLab

6 - 7pm
6:00pm - 7:00pm

BJJ Mixed Lvl by MattLab

BJJ Mixed Lvl by MattLab
Monday, November 24 · 6:00pm - 7:00pm

Samurai Beginners - (6-8 yrs)

6:10 - 6:50pm
6:10pm - 6:50pm

Samurai Beginners - (6-8 yrs)

Book 0/14
Samurai Beginners - (6-8 yrs)
Monday, November 24 · 6:10pm - 6:50pm
Book

- - - ADVANCED - - - - - - Samurai - - - (6-8 yrs)

6:55 - 7:35pm
6:55pm - 7:35pm

- - - ADVANCED - - - - - - Samurai - - - (6-8 yrs)

Book 0/14
- - - ADVANCED - - - - - - Samurai - - - (6-8 yrs)
Monday, November 24 · 6:55pm - 7:35pm
Book

STRIKING by MattLabs

7 - 8pm
7:00pm - 8:00pm

STRIKING by MattLabs

STRIKING by MattLabs
Monday, November 24 · 7:00pm - 8:00pm

Adult - Basics

7:45 - 8:45pm
7:45pm - 8:45pm

Adult - Basics

Book 0/14
Adult - Basics
Monday, November 24 · 7:45pm - 8:45pm
Book

Little Ninja Group 2 (3-5 yrs)

4:45 - 5:15pm
4:45pm - 5:15pm

Little Ninja Group 2 (3-5 yrs)

Little Ninja Group 2 (3-5 yrs)
Tuesday, November 25 · 4:45pm - 5:15pm

- - Youth Karate - - (9-14 yrs)

5:30 - 6:15pm
5:30pm - 6:15pm

- - Youth Karate - - (9-14 yrs)

Book 0/14
- - Youth Karate - - (9-14 yrs)
Tuesday, November 25 · 5:30pm - 6:15pm
Book

Advanced Youth (9-14 yrs)

6:30 - 7:30pm
6:30pm - 7:30pm

Advanced Youth (9-14 yrs)

Book 0/14
Advanced Youth (9-14 yrs)
Tuesday, November 25 · 6:30pm - 7:30pm
Book

Mixed Lvl BJJ/Grappling by MattLabs

6:30 - 7:30pm
6:30pm - 7:30pm

Mixed Lvl BJJ/Grappling by MattLabs

Mixed Lvl BJJ/Grappling by MattLabs
Tuesday, November 25 · 6:30pm - 7:30pm

Black Belt Class / Adv Training

7:30 - 8:30pm
7:30pm - 8:30pm

Black Belt Class / Adv Training

Black Belt Class / Adv Training
Tuesday, November 25 · 7:30pm - 8:30pm

Kids BJJ by MattLabs

5 - 6pm
5:00pm - 6:00pm

Kids BJJ by MattLabs

Kids BJJ by MattLabs
Wednesday, November 26 · 5:00pm - 6:00pm

Little Ninja Group 1 (3-5 yrs)

5:30 - 6pm
5:30pm - 6:00pm

Little Ninja Group 1 (3-5 yrs)

Book 0/14
Little Ninja Group 1 (3-5 yrs)
Wednesday, November 26 · 5:30pm - 6:00pm
Book

BJJ Gi Mixed by MattLabs

6 - 7pm
6:00pm - 7:00pm

BJJ Gi Mixed by MattLabs

BJJ Gi Mixed by MattLabs
Wednesday, November 26 · 6:00pm - 7:00pm

Samurai Beginners - - - Weapons - - - (6-8 yrs)

6:10 - 6:50pm
6:10pm - 6:50pm

Samurai Beginners - - - Weapons - - - (6-8 yrs)

Book 0/14
Samurai Beginners - - - Weapons - - - (6-8 yrs)
Wednesday, November 26 · 6:10pm - 6:50pm
Book

ADVANCED Samurai - Weapons (6-8 yrs)

6:55 - 7:35pm
6:55pm - 7:35pm

ADVANCED Samurai - Weapons (6-8 yrs)

Book 0/14
ADVANCED Samurai - Weapons (6-8 yrs)
Wednesday, November 26 · 6:55pm - 7:35pm
Book

Adult - Applications

7:45 - 8:45pm
7:45pm - 8:45pm

Adult - Applications

Book 0/14
Adult - Applications
Wednesday, November 26 · 7:45pm - 8:45pm
Book

Little Ninja Group 2 (3-5 yrs)

4:45 - 5:15pm
4:45pm - 5:15pm

Little Ninja Group 2 (3-5 yrs)

Little Ninja Group 2 (3-5 yrs)
Thursday, November 27 · 4:45pm - 5:15pm

Youth - Weapons (9-14 yrs)

5:30 - 6:15pm
5:30pm - 6:15pm

Youth - Weapons (9-14 yrs)

Youth - Weapons (9-14 yrs)
Thursday, November 27 · 5:30pm - 6:15pm
Book

Advanced Youth - Weapons (9-14 yrs)

6:30 - 7:30pm
6:30pm - 7:30pm

Advanced Youth - Weapons (9-14 yrs)

Advanced Youth - Weapons (9-14 yrs)
Thursday, November 27 · 6:30pm - 7:30pm
Book

Mixed lvl Gi by MattLabs

6:30 - 7:30pm
6:30pm - 7:30pm

Mixed lvl Gi by MattLabs

Mixed lvl Gi by MattLabs
Thursday, November 27 · 6:30pm - 7:30pm

Adult - Weapons

7:45 - 8:45pm
7:45pm - 8:45pm

Adult - Weapons

Adult - Weapons
Thursday, November 27 · 7:45pm - 8:45pm
Book

Open BJJ/Grap/Strike Lab by Matt Labs

12 - 1pm
12:00pm - 1:00pm

Open BJJ/Grap/Strike Lab by Matt Labs

Open BJJ/Grap/Strike Lab by Matt Labs
Friday, November 28 · 12:00pm - 1:00pm

COMBINED SPARRING

6 - 7pm
6:00pm - 7:00pm

COMBINED SPARRING

COMBINED SPARRING
Friday, November 28 · 6:00pm - 7:00pm

Sparring Class 1 - gear required

6 - 7pm
6:00pm - 7:00pm

Sparring Class 1 - gear required

Sparring Class 1 - gear required
Friday, November 28 · 6:00pm - 7:00pm
Book

SPARRING CLASS 2 - gear required

7:15 - 8:15pm
7:15pm - 8:15pm

SPARRING CLASS 2 - gear required

SPARRING CLASS 2 - gear required
Friday, November 28 · 7:15pm - 8:15pm
Book

Adult Combined Fundamentals

9 - 9:45am
9:00am - 9:45am

Adult Combined Fundamentals

Adult Combined Fundamentals
Saturday, November 29 · 9:00am - 9:45am
Book

Combined - - Youth & - - Adv Youth - - (9-14 yrs)

10 - 10:45am
10:00am - 10:45am

Combined - - Youth & - - Adv Youth - - (9-14 yrs)

Combined - - Youth & - - Adv Youth - - (9-14 yrs)
Saturday, November 29 · 10:00am - 10:45am
Book

COMBINED YOUTH & ADULT

10 - 10:50am
10:00am - 10:50am

COMBINED YOUTH & ADULT

COMBINED YOUTH & ADULT
Saturday, November 29 · 10:00am - 10:50am

- - Combined LN - - (3-5 yrs)

11 - 11:40am
11:00am - 11:40am

- - Combined LN - - (3-5 yrs)

- - Combined LN - - (3-5 yrs)
Saturday, November 29 · 11:00am - 11:40am
Book

COMBINED LN & Samurai

11 - 11:50am
11:00am - 11:50am

COMBINED LN & Samurai

COMBINED LN & Samurai
Saturday, November 29 · 11:00am - 11:50am

Combined Samurai (6 - 8 Years)

11:50am - 12:30pm
11:50am - 12:30pm

Combined Samurai (6 - 8 Years)

Combined Samurai (6 - 8 Years)
Saturday, November 29 · 11:50am - 12:30pm
Book
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We look forward to seeing you soon! Please come 10 minutes early to be ready to go at start time, or 15 minutes early if your first time attending.

Please let us know ahead of time if you are not able to make your scheduled time.

You are now on the waitlist. If a spot opens up we will notify you via Email.

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Kids Martial Arts Classes - try for free!

Kids Martial Arts Classes - try for free!

Thank you for your interest in Children's Karate / Martial Arts Classes. We have separate classes for different age groups and experience levels, allowing us to have group-appropriate content and activities. We also sometimes use our two different rooms to focus on subgroups within a class. Our students learn to protect themselves, express themselves, and grow as people and as martial artists.

We focus on self-development and fitness through self-defense, but in an age-appropriate, safe and fun manner. -This is why some of our Instructors have been with us for 10, 15 and even 20 or more years, often themselves starting as a Little Ninja!

We always offer a free trial, either in their group or private mini-class if preferred, and we offer a New Student Special to allow for an extended risk-free chance to confirm they want to continue training longer-term with us.

Thank you for contacting us. We will follow up with you as soon as we can to answer any questions you might have and to schedule your free trial class! You can also call or text 609-690-9060 for more info, and can pre-register for your trial class at www.karatefitusa.net/signup

Adult Martial Arts - Try a Free Class!

Adult Martial Arts - Try a Free Class!

We offer Adult classes for all ability and experience levels, sometimes using our two rooms and offering variations to challenge Beginners and Advanced students and properly direct the material.

We focus on self-development and fitness through self-defense, but in a safe, fun and effective manner. Our classes include Karate, Weapons and Small Circle Jujitsu techniques, with both solo, partner and group work.  Training brings mental and physical health benefits, and increases confidence to help improve your life outside of karate as well - even if you hopefully never need to use the many techniques you will learn!

Please come in for a free trial, either a regular group class to see what that is all about, or we can also arrange a private mini-class if preferred. We then have a New Student Special to allow for an extended risk-free period to reconfirm you like our approach and look to continue longer-term.

Thank you for contacting us. We will follow up with you as soon as we can to answer any questions you might have and to schedule your free trial class! You can also call or text 609-690-9060 for more info, and can pre-register for your trial class at www.karatefitusa.net/signup