AI-powered ASL recognition

Hands that speak,
words that connect.

SignFlow uses computer vision to translate American Sign Language into text. Live translation in your browser. Explore the rich history and beauty of ASL, then try the translator yourself.

Illustration of ASL

Why ASL?

Many deaf people rely on translators for communication with others. For example, hospitals provide translators free of charge to assist in translating your symptoms to the doctor and relaying back what the doctor says. These translators make the situation of conversing with others manageable.

However, translators cannot be by your side 24/7, and their lack of presence in everyday life can be felt. For example, it might be difficult for someone with hearing loss to ask where an item is located in the grocery store. That's why an ASL translator website/app would be an incredibly useful tool to deaf people, because their phone would act as their personal translator. This would allow deaf people to have more fluid conversations with others, reducing the problem of language barriers between hearing and non-hearing individuals.

Illustration of ASL communication
Background

A language with deep roots

American Sign Language is a complete, natural language with its own grammar, syntax, and culture. It's not simply a signed version of English.

1817

America's First School for the Deaf

Thomas Hopkins Gallaudet and Laurent Clerc founded the American School for the Deaf in Hartford. Connecticut is the birthplace of ASL.

1864

Gallaudet University Founded

In 1864, Gallaudet University was established in Washington, D.C., becoming the world's only university specifically designed for deaf and hard-of-hearing students.

1960

ASL Recognized as a Language

Linguist William Stokoe published research proving ASL is a fully structured linguistic system and not simply gestures or mime.

1990

Americans with Disabilities Act

The ADA mandated accessibility protections and helped legitimize ASL interpreting as a professional field across the United States.

500K+
Native ASL signers in the US and Canada
3rd
Often cited as the 3rd most used language in the U.S
200+
Years of history since ASL's formal founding
~15%
Of the world's population lives with some degree of hearing loss. That's over 1 billion people globally
The Alphabet

26 letters, infinite expression

The ASL manual alphabet represents each letter with a distinct handshape. J and Z use motion compared to the rest.

A
Fist, thumb to side
B
Flat hand, fingers up
C
Curved C shape
D
Index up, others curl
E
Fingers bent to palm
F
Index & thumb touch
G
Index & thumb point
H
Two fingers sideways
I
Pinky up
J
Pinky draws a J in the air
K
Index, middle + thumb
L
L-shape index & thumb
M
3 fingers over thumb
N
2 fingers over thumb
O
All fingers form O
P
K-shape pointing down
Q
G-shape pointing down
R
Crossed index & middle
S
Fist, thumb in front
T
Thumb between fingers
U
Index & middle together
V
Index & middle apart
W
3 fingers spread up
X
Index finger hooked
Y
Pinky & thumb out
Z
Index finger draws a Z
Learning Guide

Tips for learning ASL

Whether you're a beginner or brushing up your skills, these principles will help you progress faster and more confidently.

01

Start with fingerspelling

Learning the manual alphabet gives you the foundation to spell any word. Practice each letter in a mirror until your hands form them naturally without thinking.

02

Immerse yourself in Deaf culture

ASL is deeply tied to culture. Watch ASL videos, attend Deaf events, and connect with the Deaf community. Learning the language accelerates through real interaction with others.

03

Focus on clarity, not speed

Beginners often rush. Slow down and ensure each handshape is clean and distinct. Speed comes naturally with time and bad habits formed early are hard to unlearn.

04

Use your whole body

ASL uses facial expressions, mouth movements, and body posture as grammatical elements. Signing with only your hands is like speaking in a monotone.

05

Practice every single day

Even 10 minutes of daily practice beats a 2-hour weekly session. Muscle memory is built through repetition, so short consistent sessions cement signs far more effectively.

06

Be patient and embrace mistakes

Every fluent signer made thousands of errors on the way there. The Deaf community is famously welcoming to learners, so don't let fear of mistakes stop you from trying.

Live Demo

Try it yourself

Point your webcam at your hand and sign a letter. Our AI will recognize it in real time and build your message letter by letter. It will only work with certain phrases that we've trained the model on, but should work for each letter.

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