Is Alex a boy’s name or a girl’s name? And what about Andrea, which flips depending on the country? This free Gender Guesser answers with data instead of opinion: type any first name and it predicts whether the name is mostly carried by women or by men, shows how strong that lean is as a percentage, and reveals how many real records the prediction rests on. It is a quick, light-hearted way to check a baby name, settle a friendly argument, or give a story character a name that reads the way you intend.
How the Gender Guesser works
The tool talks to Genderize, a service that has counted first names in millions of records from many countries and noted how often each name appears for women and for men. When you search, it compares those two piles for your name and reports the bigger side as the prediction. Alongside the answer it returns a probability and the total count.
How to use it
Enter one first name only and press Predict the gender. The result card shows the predicted gender in large type with its symbol, a bar for the probability, and the exact record count underneath. Check the name exactly as it is usually spelled: accents, hyphens and extra letters can shift the result, because the database treats each spelling as its own name. If nothing comes back, the name is simply too rare for the database so far — try the commonest spelling.
Unisex names and names that travel
Plenty of names refuse to sit on one side. Short forms like Alex, Sam, Charlie and Robin are handed to boys and girls alike, and the prediction for them lands closer to the middle — a 60–40 split rather than a landslide. Other names change sides at the border: Andrea is mostly female in English-speaking countries but traditionally male in Italy, and Nicola flips the other way. A single worldwide figure smooths over those local habits, so treat a near-even result as the tool honestly saying “this one depends where you are.”
Why the probability matters more than the answer
The headline answer is just the bigger half; the percentage tells you how meaningful it is. A prediction of 99% female on four million records, like Maria, is about as settled as statistics get. A prediction of 58% on a few hundred records is really a coin toss with a slight lean, and next year’s data could flip it. Always read the two numbers together — probability for confidence, count for weight — and distrust any dramatic conclusion drawn from a small sample.
Baby names, characters and other good excuses
Parents use the tool as a reality check: if you love a name but want strangers to read it instantly as a girl’s or a boy’s name, a strong one-sided result is reassuring, while a split result warns you the name is genuinely shared. Writers use it in reverse, picking split names for characters they want readers to meet without assumptions. Quiz hosts use it to test hunches about celebrities and historical figures.
Limitations worth knowing
This tool predicts from name statistics; it never determines any real person’s gender, and it knows nothing about the individual in front of you. Names are labels families choose freely — any name can be given to any child — and usage shifts over time and from place to place faster than any database can fully track. Records also lean towards the countries Genderize collected, so some regions rest on thinner evidence. Enjoy it as an informed guess about a name, not a verdict about a person.
Gender Guesser – frequently asked questions
Is the Gender Guesser free?
Yes. It is free, needs no sign-up, and you can check as many names as you like.
Where does the prediction come from?
From Genderize, which tallies how often each first name appears for women and men across millions of records worldwide. The result card shows both the probability and the record count behind every prediction.
Can it tell me a specific person’s gender?
No. It describes how a name is usually used, statistically. It cannot know anything about an individual person, and your searches are not stored by this page.
Why is my name split almost 50–50?
Because it is a shared or unisex name, or because it is used differently in different countries. A close split is a real finding: the name genuinely belongs to everyone.
Related tools
Versión en español: Predictor de género por nombre — descubre si un nombre es masculino o femenino. You may also like: Age Guesser — Guess Your Age from Your First Name · Nationality Guesser — Predict Nationality from a Name with Country Flags.
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