Is Ace 1 or 10 in Gin Rummy?

Short Answer
In Gin Rummy, Aces are always worth 1 point. They are the lowest value card, making them desirable as deadwood since they contribute minimally to your deadwood count.

Complete Card Values

Card Point Value
Ace (A) 1 point
2 through 9 Face value (2-9 points)
10 10 points
Jack (J) 10 points
Queen (Q) 10 points
King (K) 10 points

Why Low Aces Matter

Since Aces are only 1 point, they're valuable as deadwood:

Example

Good deadwood: A♠, 2♦, 3♣ = 6 points total. You can knock!

Bad deadwood: K♥, Q♠, J♦ = 30 points total. Cannot knock yet.

Aces in Runs

In Gin Rummy, Aces are low only. They can form runs like A-2-3 but cannot wrap around (Q-K-A is not valid, and K-A-2 is not valid).

Aces in Sets

Three or four Aces of different suits form a valid set (meld):

Ace Values in Other Rummy Games

Be aware that Ace values differ across Rummy variants:

Game Ace Value
Gin Rummy 1 point
Rummy 500 1 or 15 points (context-dependent)
Canasta 20 points
Indian Rummy 10 points (high or low)