How is 'percentage of hands' calculated?

There are 1,326 possible 2-card starting hands in Hold'em (52 choose 2). Whatever range you build maps to an exact combo count via the same range-notation parser used throughout this site, and that count divided by 1,326 is the percentage.

Why do the example ranges below use notation like 'A2s+' or 'JTo'?

Standard poker range shorthand: a pair like '22+' means 22 and every pair above it; a suited hand like 'A2s+' means every suited ace from A2s up to AKs; an offsuit hand like 'JTo' is a single specific combo. It's the same grammar the calculator's range grid produces when you click cells.

Is this the same as the range vs range equity calculator?

It uses the same underlying grid and engine, but the question is different: range vs range answers 'who wins more between these two ranges', while this page is about defining and sizing a single range — how wide is it, and what does it actually contain.

Poker Range Calculator

Build a starting-hand range by clicking cells on the grid, and see exactly what percentage of all 1,326 possible starting hands it covers — useful for sanity-checking whether an opening or defending range is actually as wide (or narrow) as it feels.

Example range	Combos	% of all hands
Premium pairs + AK	34	2.6%
Standard early-position open	50	3.8%
Standard button open	330	24.9%
Wide big-blind defend	534	40.3%

Range

combos

0.0%

of all 1,326 starting hands

How this calculator works — formulas & method

Method: combinatorial counting over standard range notation · deterministic — no AI

Constant	Value	Source
totalCombos	1,326	C(52,2) — every possible 2-card starting hand

— Combos per hand type —pocket pair    → 6 combos   (e.g. QQ = QsQh, QsQd, QsQc, QhQd, QhQc, QdQc)suited hand    → 4 combos   (e.g. AKs = AsKs, AhKh, AdKd, AcKc)offsuit hand   → 12 combos  (e.g. AKo = every rank-A/rank-K pair minus the 4 suited ones) — Range percentage —combos  = sum of combo counts for every hand token in the rangepercent = combos / 1326 × 100

Notation grammar: 'AA' single pair, '22+' a pair and everything above it, 'AKs'/'ATs+' suited (with +), 'AKo' offsuit, 'AsKd' one exact combo. Combo counts are exact, not estimated.

Want to know who's actually ahead between two ranges, not just how wide one is? Use the range vs range equity calculator.

FAQ

How is 'percentage of hands' calculated?: There are 1,326 possible 2-card starting hands in Hold'em (52 choose 2). Whatever range you build maps to an exact combo count via the same range-notation parser used throughout this site, and that count divided by 1,326 is the percentage.
Why do the example ranges below use notation like 'A2s+' or 'JTo'?: Standard poker range shorthand: a pair like '22+' means 22 and every pair above it; a suited hand like 'A2s+' means every suited ace from A2s up to AKs; an offsuit hand like 'JTo' is a single specific combo. It's the same grammar the calculator's range grid produces when you click cells.
Is this the same as the range vs range equity calculator?: It uses the same underlying grid and engine, but the question is different: range vs range answers 'who wins more between these two ranges', while this page is about defining and sizing a single range — how wide is it, and what does it actually contain.