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A free birth chart with no sign-up, and a way to check it
No account, no email, houses included. Then a test you can run on any chart site, ours too.
Photo: Tomáš Hustoles / Burst
At a glance
Yes: Shymea's free birth chart shows every planet, all twelve Placidus houses, the angles and aspects with no account and no email. Our engine matched the Swiss Ephemeris to a 0.17″ median across 870 positions.
- Account needed
- Nonechart shows on the same page
- Email needed
- Nonean optional box sits below the result
- Houses
- Placidus, 12 cuspsneeds a birth time
- Median gap vs Swiss Ephemeris
- 0.17 arcseconds870 positions, 1900-2035
- Sign disagreements
- 0 of 870and 0 whole-degree disagreements
Make my free chart nowNo account, no email.
The short version
You should not have to hand over an email to see your own sky
Try this today
- Have your birth certificate time ready, not a family guess, if you can.
- Type the place as a city, then pick it from the list so the time zone is right.
- Screenshot the planet table. It is the bit you will compare later.
It is midnight. Someone just said your Venus placement explains a lot, and you want to know if they are right. You find a birth chart site, type your details, and then: create an account to see your results.
That is the moment this page is for. A birth chart is arithmetic on public astronomy. The positions of the planets at your birth time are the same for everyone who computes them correctly, so there is no reason the answer should sit behind a login.
On Shymea's free birth chart you enter a date, a time and a place. The full chart appears right there: Sun through Pluto, all twelve houses, Ascendant and Midheaven, the major aspects, and a short reading for each planet. No account step. No email gate. There is an optional box under the result if you want to hear about the app; skip it and nothing is hidden.
Then, because "free" is easy to say and "accurate" is harder to prove, the rest of this page shows how we tested the maths, and gives you a tool to test any calculator yourself, including ours.
What is in it
What a full free chart with houses should actually include
Try this today
- All ten planets with degrees, not just signs.
- Twelve house cusps, with the house system named.
- Ascendant and Midheaven to the degree.
- Aspects listed, with orbs if you want detail.
A lot of "free birth chart" results are really a Sun, Moon and rising sign with a paywall after that. Your big three is a lovely start, but it is three of the roughly twenty things a chart holds.
A complete chart has ten planets (Sun, Moon, Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto), each with a sign and a degree. It has twelve house cusps, which say where in life each planet's story plays out. It has the four angles: Ascendant, Descendant, Midheaven and IC. And it has aspects, the angles between planets, which are where most of the texture lives.
Houses are the part people most often miss, and the part that depends most on the birth time. Shymea uses Placidus, the most widely used time-based house system in modern Western astrology. If you are curious how a different system moves things, the Whole Sign vs Placidus comparison toggles between the two.
If you do not know your birth time, a good calculator should say so and leave the houses blank rather than invent them. Ours does. You can still see every planet sign and aspect, and the rising sign without birth time tool shows which rising signs were possible across your birth day.
The accuracy question
What 'most accurate birth chart calculator' really comes down to
Here is the honest answer, and it is a little anticlimactic: for the planets, every serious modern calculator is accurate enough that you will never see a difference.
Most astrology software computes positions with the Swiss Ephemeris, published by Astrodienst. Shymea computes them from NASA JPL's DE442 through the Skyfield library. So we measured the gap between the two, and published the whole study with an 870-row CSV anyone can rerun.
The result: across 870 positions from 1900 to 2035, the median difference is 0.17 arcseconds, the 95th percentile is 2.8 arcseconds, and the single largest gap is 26.7 arcseconds, under half an arc-minute. The two engines disagreed about a sign zero times and about a whole degree zero times. For charts from 1960 on, the median falls to 0.10 arcseconds.
The small gaps that do exist are mostly the Moon before about 1930, and they come from delta-T, the correction between clock time and the time scale the ephemeris uses. Before the mid-1950s that correction is reconstructed from old eclipse records, and different libraries model it slightly differently. Neither is wrong.
So when someone asks which calculator is most accurate, the better question is: which one makes it easiest to enter your birth data correctly? That is where real errors come from.
The sky behind it
Both engines were asked for the same quantity: apparent geocentric ecliptic longitude of date, tropical. Software: Skyfield 1.53 with JPL DE442, and pyswisseph 2.10.03 with the Swiss Ephemeris. One arcsecond is 1/3600 of a degree. Full method on the study page and our methodology.
When charts disagree
Your chart looks different on another site? Check these four things
Try this today
- Only the Ascendant and houses differ: time, time zone or house system.
- Every planet differs by about 24°: one site is sidereal.
- Only the Moon differs by a few degrees: the times differ by a few hours.
If two calculators give you different answers, it is almost never the planets moving. It is one of these.
1. Time zone and daylight saving. This is the big one. A birth in a place and year where clocks had shifted for summer, or where local rules changed, can move the time by an hour. An hour moves your Ascendant by roughly 15 degrees and your Moon by about half a degree. Picking the city from a list, rather than typing a UTC offset yourself, lets the calculator look up the historical rule.
2. The zodiac. Western astrology uses the tropical zodiac, tied to the seasons. Vedic astrology uses a sidereal zodiac tied to the stars, which today sits about 24 degrees away. If every planet on one site is shifted by the same amount, that is what you are seeing. The sidereal sign calculator shows both.
3. The house system. Placidus, Whole Sign, Koch and Equal can put the same planet in different houses, especially near a cusp. The planet signs will still match.
4. A rounded birth time. "Around 8 in the morning" is a two-hour window for your rising sign. Small time changes do not touch the Sun, but they can move the Moon across a sign line on a cusp day.
Test any calculator
Two reference charts you can type into any site
You do not have to trust us. Here are two charts anyone can enter, computed with JPL DE442 and cross-checked against pyswisseph (the largest gap across both charts was 0.81 arcseconds).
The J2000 epoch, 2000-01-01 at 12:00 UTC, at the Royal Observatory Greenwich. This is the standard reference instant astronomers use. The Sun sits at 10°22′ Capricorn, the Moon at 13°19′ Scorpio, and Saturn at 10°24′ Taurus. The Ascendant comes out at 24°17′ Aries.
The Apollo 11 landing, 1969-07-20 at 15:17 local time in Houston (20:17 UTC). The Sun is at 27°55′ Cancer, the Moon at 7°52′ Libra, and Jupiter and Uranus sit almost together at 0°45′ Libra and 0°41′ Libra. The Ascendant for Houston is 19°21′ Scorpio.
Type either into a calculator and compare to the minute. If the planets match within a minute or two and only the Ascendant drifts, look at how that site handles the place and time zone. The full tables are below, and the checker lets you type the other site's numbers in directly.
Check any calculator
The chart checker: is that other site right?
Pick a reference chart, or enter your own birth data. Then type what another calculator says for one placement and see how far apart they are, with the likely reason. All in your browser.
1. Pick a chart to test.
2000-01-01 at 12:00 (UTC), Royal Observatory Greenwich, 51.4779°N 0.0015°W. Type exactly this into the other calculator.
| Sun | 10°22′ Capricorn |
|---|---|
| Moon | 13°19′ Scorpio |
| Mercury | 1°53′ Capricorn |
| Venus | 1°34′ Sagittarius |
| Mars | 27°58′ Aquarius |
| Jupiter | 25°15′ Aries |
| Saturn | 10°24′ Taurus |
| Uranus | 14°49′ Aquarius |
| Neptune | 3°12′ Aquarius |
| Pluto | 11°27′ Sagittarius |
| Ascendant | 24°17′ Aries |
2. What does the other site say?
Enter degrees (0-29) and minutes (0-59) to compare.
More to read
Shorter reads. Each opens in place.
A note on privacy
Why no sign-up matters more than it sounds
Your birth date, time and place together are surprisingly identifying. They are also all a chart needs. A calculator that wants your email first is asking for something the maths does not use.
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Our free chart asks only for the three things the sky needs. The checker on this page goes further: it runs entirely in your browser with the astronomy-engine library, and nothing you type leaves the page.
If you later want your chart saved, readings that change with the sky, or a chat about a placement, that is what the Shymea app is for, and making an account there is a choice, not a toll.
Who made this
Plainly: this is our calculator
Shymea is our app and our site, so read this page as a description of our own tool, not a neutral ranking. We have not scored other calculators. Instead we have given you a test you can run on any of them, and the full data from our own accuracy study, so you can check rather than believe. Comparing apps more broadly? See the best astrology app 2026 comparison. Checked October 2026.
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Reference charts, computed
Apparent geocentric tropical longitude of date from JPL DE442 (Skyfield), rounded to the arc-minute. The last column is the gap to pyswisseph. Ascendant uses mean sidereal time and mean obliquity.
| Placement | Position | Gap to Swiss Ephemeris |
|---|---|---|
| Sun | 10°22′ Capricorn | 0.01″ |
| Moon | 13°19′ Scorpio | 0.09″ |
| Mercury | 1°53′ Capricorn | 0.03″ |
| Venus | 1°34′ Sagittarius | 0.02″ |
| Mars | 27°58′ Aquarius | 0.03″ |
| Jupiter | 25°15′ Aries | 0.20″ |
| Saturn | 10°24′ Taurus | 0.09″ |
| Uranus | 14°49′ Aquarius | 0.15″ |
| Neptune | 3°12′ Aquarius | 0.12″ |
| Pluto | 11°27′ Sagittarius | 0.25″ |
| Ascendant | 24°17′ Aries | n/a |
| Placement | Position | Gap to Swiss Ephemeris |
|---|---|---|
| Sun | 27°55′ Cancer | 0.06″ |
| Moon | 7°52′ Libra | 0.81″ |
| Mercury | 25°51′ Cancer | 0.18″ |
| Venus | 15°02′ Gemini | 0.07″ |
| Mars | 2°46′ Sagittarius | 0.18″ |
| Jupiter | 0°45′ Libra | 0.04″ |
| Saturn | 8°06′ Taurus | 0.01″ |
| Uranus | 0°41′ Libra | 0.22″ |
| Neptune | 26°01′ Scorpio | 0.01″ |
| Pluto | 23°00′ Virgo | 0.30″ |
| Ascendant | 19°21′ Scorpio | n/a |
All times are UTC. In the Americas the local date can be a day earlier; in Asia and Australia a day later.
Quick answers
Can I get a free birth chart without signing up?
Yes. On the Shymea birth chart page you type a date, time and place and the whole chart appears on the same page: ten planets, twelve houses, the angles and the major aspects. There is no account step and no email field in front of the result.
Is there a free birth chart with no email required?
Ours asks for no email to show your chart. Below the result there is an optional box to hear about the app; leave it empty and nothing changes. On any other site, a quick test: if the chart only appears after an email or a code, it is not really no-email.
Does the free birth chart include houses?
Yes, with Placidus houses, the most common modern Western system, plus the Ascendant and Midheaven. Houses need a birth time. With an unknown time you still get planet signs and aspects, but the houses and rising sign are left out rather than guessed.
What is the most accurate birth chart calculator in 2026?
Any calculator built on a modern ephemeris is accurate to well under a minute of arc for planets. We measured ours (NASA JPL DE442) against the Swiss Ephemeris that most astrology software uses: 870 positions, median gap 0.17 arcseconds, zero sign or degree disagreements. Your birth time matters far more than the engine.
Why does my chart look different on two websites?
Almost always the input, not the maths: a different time zone or daylight-saving rule, a rounded birth time, a sidereal zodiac (about 24 degrees off from tropical today), or a different house system such as Whole Sign instead of Placidus. Use the checker on this page to find out which.
Is my birth data saved if I don't make an account?
The free chart is computed from what you type and shown in your browser. The checker on this page runs entirely in your browser and sends nothing. If you want a chart saved and readings over time, that is what the app account is for, and it is your choice.
How accurate is a birth chart if I don't know my birth time?
The Sun is reliable to the day, and the slower planets barely move. The Moon moves about 13 degrees a day, so it can change sign. The rising sign changes roughly every two hours, which is why it needs the time to the minute.
