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 75 (!), 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
03/29/2026 - 04/04/2026
29 Sun 30 Mon 31 Tue 1 Wed 2 Thu 3 Fri 4 Sat
29 Sun Closed
30 Mon Closed
31 Tue Closed
1 Wed Closed
2 Thu Closed
3 Fri Closed
4 Sat Closed
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

Little Ninja Group 1 (3-5 yrs)

5:30 - 6pm 0 / 14
5:30pm - 6:00pm

Little Ninja Group 1 (3-5 yrs)

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

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Samurai Beginners - (6-8 yrs)

6:10 - 6:50pm 0 / 14
6:10pm - 6:50pm

Samurai Beginners - (6-8 yrs)

Bookings: 0/14
Book
Samurai Beginners - (6-8 yrs)
Monday, March 30 · 6:10pm - 6:50pm

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

6:55 - 7:35pm 0 / 14
6:55pm - 7:35pm

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

Bookings: 0/14
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- - - ADVANCED - - - - - - Samurai - - - (6-8 yrs)
Monday, March 30 · 6:55pm - 7:35pm

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Private Trial

7 - 7:30pm 0
7:00pm - 7:30pm

Private Trial

Bookings: 0
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Private Trial
Monday, March 30 · 7:00pm - 7:30pm

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Adult - Basics

7:45 - 8:45pm 0 / 14
7:45pm - 8:45pm

Adult - Basics

Bookings: 0/14
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Adult - Basics
Monday, March 30 · 7:45pm - 8:45pm

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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, March 31 · 4:45pm - 5:15pm

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

5:30 - 6:15pm 0 / 14
5:30pm - 6:15pm

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

Bookings: 0/14
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- - Youth Karate - - (9-14 yrs)
Tuesday, March 31 · 5:30pm - 6:15pm

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Advanced Youth (9-14 yrs)

6:30 - 7:30pm 0 / 14
6:30pm - 7:30pm

Advanced Youth (9-14 yrs)

Bookings: 0/14
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Advanced Youth (9-14 yrs)
Tuesday, March 31 · 6:30pm - 7:30pm

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Black Belt Class / Adv Training

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

Black Belt Class / Adv Training

Black Belt Class / Adv Training
Tuesday, March 31 · 7:30pm - 8:30pm

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Little Ninja Group 1 (3-5 yrs)

5:30 - 6pm 0 / 14
5:30pm - 6:00pm

Little Ninja Group 1 (3-5 yrs)

Bookings: 0/14
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Little Ninja Group 1 (3-5 yrs)
Wednesday, April 01 · 5:30pm - 6:00pm

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

6:10 - 6:50pm 0 / 14
6:10pm - 6:50pm

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

Bookings: 0/14
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Samurai Beginners - - - Weapons - - - (6-8 yrs)
Wednesday, April 01 · 6:10pm - 6:50pm

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ADVANCED Samurai - Weapons (6-8 yrs)

6:55 - 7:35pm 0 / 14
6:55pm - 7:35pm

ADVANCED Samurai - Weapons (6-8 yrs)

Bookings: 0/14
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ADVANCED Samurai - Weapons (6-8 yrs)
Wednesday, April 01 · 6:55pm - 7:35pm

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Private Trial

7 - 7:30pm 0
7:00pm - 7:30pm

Private Trial

Bookings: 0
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Private Trial
Wednesday, April 01 · 7:00pm - 7:30pm

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Adult - Applications

7:45 - 8:45pm 0 / 14
7:45pm - 8:45pm

Adult - Applications

Bookings: 0/14
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Adult - Applications
Wednesday, April 01 · 7:45pm - 8:45pm

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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, April 02 · 4:45pm - 5:15pm

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Youth - Weapons (9-14 yrs)

5:30 - 6:15pm 0 / 14
5:30pm - 6:15pm

Youth - Weapons (9-14 yrs)

Bookings: 0/14
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Youth - Weapons (9-14 yrs)
Thursday, April 02 · 5:30pm - 6:15pm

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Advanced Youth - Weapons (9-14 yrs)

6:30 - 7:30pm 0 / 14
6:30pm - 7:30pm

Advanced Youth - Weapons (9-14 yrs)

Bookings: 0/14
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Advanced Youth - Weapons (9-14 yrs)
Thursday, April 02 · 6:30pm - 7:30pm

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Adult - Weapons

7:45 - 8:45pm 0 / 16
7:45pm - 8:45pm

Adult - Weapons

Bookings: 0/16
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Adult - Weapons
Thursday, April 02 · 7:45pm - 8:45pm

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COMBINED SPARRING

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

COMBINED SPARRING

COMBINED SPARRING
Friday, April 03 · 6:00pm - 7:00pm

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Sparring Class 1 - gear required

6 - 7pm 0 / 20
6:00pm - 7:00pm

Sparring Class 1 - gear required

Bookings: 0/20
Sparring Class 1 - gear required
Friday, April 03 · 6:00pm - 7:00pm

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SPARRING CLASS 2 - gear required

7:15 - 8:15pm 0 / 30
7:15pm - 8:15pm

SPARRING CLASS 2 - gear required

Bookings: 0/30
SPARRING CLASS 2 - gear required
Friday, April 03 · 7:15pm - 8:15pm

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Private Trial

8:15 - 8:45am 0
8:15am - 8:45am

Private Trial

Bookings: 0
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Private Trial
Saturday, April 04 · 8:15am - 8:45am

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Adult Combined Fundamentals

9 - 9:45am 0 / 16
9:00am - 9:45am

Adult Combined Fundamentals

Bookings: 0/16
Adult Combined Fundamentals
Saturday, April 04 · 9:00am - 9:45am

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

10 - 10:45am 0 / 14
10:00am - 10:45am

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

Bookings: 0/14
Combined - - Youth & - - Adv Youth - - (9-14 yrs)
Saturday, April 04 · 10:00am - 10:45am

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COMBINED YOUTH - ADULT

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

COMBINED YOUTH - ADULT

COMBINED YOUTH - ADULT
Saturday, April 04 · 10:00am - 10:45am

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

11 - 11:40am 0 / 20
11:00am - 11:40am

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

Bookings: 0/20
- - Combined LN - - (3-5 yrs)
Saturday, April 04 · 11:00am - 11:40am

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COMBINED Little Ninja & Samurai

11 - 11:45am
11:00am - 11:45am

COMBINED Little Ninja & Samurai

COMBINED Little Ninja & Samurai
Saturday, April 04 · 11:00am - 11:45am

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Combined Samurai (6 - 8 Years)

11:50am - 12:30pm 0
11:50am - 12:30pm

Combined Samurai (6 - 8 Years)

Bookings: 0
Combined Samurai (6 - 8 Years)
Saturday, April 04 · 11:50am - 12:30pm

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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