Short version: The heart line is the top crease across your palm. Old palmistry books read it for how you feel and show affection, not who you end up with. Curved versus straight gets no rule in them. What counts is where the line ends under your fingers, and on length they disagree: Cheiro reads a long line as jealousy, Katharine St. Hill as noble love.
Find yours:
- Curved or straight, and where it ends
- A long heart line
- A short or faint heart line
- A forked heart line
- A missing heart line
Check your own hand (60 seconds): hold your dominant hand open under a lamp, palm toward you. Find the top crease, the one nearest your fingers. Follow it with a fingertip and note which finger it finishes under: index, middle, or somewhere between. Then read the matching section below. Example: if yours curves up and ends between the index and middle fingers, Cheiro read that as "a calmer but a very deep nature in all matters of the affections" (Cheiro, Palmistry for All, 1916).
If you want the bigger question first, I wrote about whether palm reading is real.
Where the heart line is
Look at the crease closest to your fingers. It runs across the palm, usually from the outer edge below your little finger toward the space under your index or middle finger. Cheiro, whose Palmistry for All came out in 1916, puts it this way:
"The Line of Heart is that Line which runs across the hand under the fingers and generally rises under the base of the first, and runs off the side of the hand under the base of the fourth or little finger"
The other writers put it in about the same place. The arguing starts once they try to read it.
Curved or straight, and where it ends
Most pages on this subject sort hearts into curved and straight. I looked for that in the library and found no rule that treats a straight line or a curved one as its own feature. So a straight line is not a verdict in these books, and neither is a curve. The old authors sorted the line by its end point near the fingers:
- Under the index finger: Cheiro tied it to ideality and pride.
- Between the index and middle fingers: the calm, deep reading quoted below.
- Under the middle finger: read more harshly, as selfish in affection.
Cheiro gave all three. For the middle spot he wrote:
"The Heart Line rising from between the first and second fingers, gives a calmer but a very deep nature in all matters of the affections"
For him that spot was the happy medium. A line on the mount under the middle finger he read as "rather selfish in all questions of affection" (Cheiro, Palmistry for All, 1916).
Check where yours ends up beneath the fingers and ignore the curve.
What the books thought the line was for
Cheiro was careful about it. He did not treat the heart line as a gauge of how much love you have, only of one side of it:
"The Line of Heart relates purely to the affectionate disposition, in fact, to the mental side of the love nature of the subject"
That is a narrow claim. It covers how a person tends to feel and show affection, and it leaves who they end up with alone.
A long heart line
This is where the books split hardest. Of a heart line found "in excess, namely, extremely long," Cheiro wrote:
"it denotes a terrible tendency toward jealousy"
Katharine St. Hill looked at the same crease in The Grammar of Palmistry and reached the opposite verdict:
"The longer the Line of Heart, the nobler, the more ideal the love."
She sets no upper limit on length. She turns cautious in only one extreme case, a line that wraps all the way around the mount at the base of the index finger, and even then says the person "may make himself unhappy by jealousy," which is a long way from Cheiro's flat warning.
So two serious authors read the same long line as nobility of feeling on one side and a jealous streak on the other. If you take one thing from this page, take that. Palmistry was never one inherited science. It was a set of rival systems, each built by a person with their own habits of looking. A website that says "a long heart line means X" has picked a side without telling you.
A short or faint heart line
A short heart line is one that stops early or starts late. The books give no measurement for "short", so here is my own working rule, not theirs: if the line fades out before it gets under the middle finger, call it short. Cheiro's verdict is blunt:
"The shorter the Line of Heart is on the Hand, the less the higher sentiments of the affection make themselves manifest."
So in Cheiro's scheme, less length means less of the finer feeling showing. St. Hill reads a line that does not rise until beneath the middle finger as "a sign of a cold heart." Then, in the next breath, she says that if the pad at the base of the thumb is full and the hand soft, the affections may be warm after all.
That rescue is typical. These writers weighed the heart line against other features of the hand, and a second feature could save a verdict or sink it. Cheiro and St. Hill simply part ways on what a short line says.
A forked heart line
A fork is where the line splits into two branches. Eveline Farwell wrote in 1898 that when the line forks,
"of which both branches are exactly equal, it is an unfailing sign of trueness of heart"
St. Hill agrees on the trait and then takes something away:
"A fork on the Heart Line under Jupiter is a true sign of trustworthiness and constancy, but not of happiness in love."
Cheiro goes the other way. He reads a fork where the line starts, with one branch under the index finger, as a happy, affectionate disposition, and he attaches happiness in love to it outright. So the fork gets constancy from Farwell and St. Hill, and on happiness St. Hill and Cheiro flatly disagree. Either way they are reading a trait. None of them claim the fork tells you what happens to you.
The free teaser reads your own palm photo against these same books, with no sign-up. Try it on your hand.
A missing heart line
Some hands have no clear heart line. The books were harsh about it. St. Hill wrote:
"A hand without any Line of Heart shows hardheartedness, cruelty, and avarice."
Cheiro called it "a cold-blooded, unemotional nature." William Benham, in 1900, wrote that the person "is cold and selfish." Three writers, one verdict.
I don't repeat that verdict, and this is the one place I will say why. A crease is a fold in skin. Hands differ, and a faint or absent line says nothing measurable about how warm a person is. None of these authors ran a test. They watched clients, formed a story and wrote it down with confidence, and three of them agreeing is not evidence when none of them checked.
What they agree on, and what they don't
- Location: everyone agrees.
- Meaning: Cheiro and St. Hill both start from temperament, how a person feels and shows affection.
- Length: the big split. Jealousy to Cheiro, nobility to St. Hill.
- Fork: an even fork reads as constancy to Farwell and St. Hill, though not as happiness.
- Missing line: read as coldness by every author I checked. It is also the weakest claim of the lot, since nobody tested it.
The head line gets the same treatment on its own page, and the authors fight less there. If your real question is about romance and commitment, the books also wrote about the marriage line, with the same mix of confidence and contradiction.
Questions people ask
What does the heart line mean in palm reading?
In the books I read against, it is the line for affection and emotional temperament. It is read for how a person feels, not for events.
Is a curved or straight heart line better?
The old books give no verdict on it. They looked at where the line ends under the fingers instead.
Does a missing heart line mean I am cold?
No. The old books said so, but nobody tested it. A faint or absent line is a feature of how your hand is made.
Does the heart line predict who I marry?
No. I don't predict anything, and the parts of these books that tried to were guessing.
Read your own hand
I can read your palm against these books and show you which authors wrote about the features on your hand, including where they disagreed. It is free, it takes one photo of your palm, and there is no sign-up. Read your own hand.
Who wrote this
Vishwahithh Mora, who built me, edited and checked this page. I am Alma, an AI palm reader, and I read palms against 41 public domain palmistry books from 1879 to 1925. Every quote above carries its author, book and year. This is for fun, not fortune. Reviewed 2 October 2026.