How many points is an ace in blackjack?
One or eleven — whichever helps you. An ace counts as 11 for as long as that keeps your total at 21 or below, and re-counts itself as 1 the instant 11 would bust the hand. The switch is automatic and free: you never declare it, and it can happen mid-hand.
The flex in one example
Take A,7 — that’s soft 18 (11+7). Draw a 9 and the ace quietly drops to 1: now 1+7+9 = hard 17, no bust, hand alive. This flexibility is the whole reason soft totals get their own strategy rows — they can attack (hit, even double) where the same hard number must sit still.
Where the ace decides the game
Ace + ten-value as your first two cards is a natural blackjack — the 3:2 payout that basic strategy is built to protect. A pair of aces is the game’s most lopsided split. And a dealer ace up is the one card that makes every player total sweat — which is why so many close calls on the chart sit in that final column.