Free Western astrology calculator
See the planets, rising sign
and twelve houses.
Calculate the chart before interpreting it. Enter the local birth time and city to apply historical time-zone and daylight-saving rules to the planets, Ascendant, Midheaven and houses.
Birth details
Enter the local date and time shown on the birth record. We apply the city's historical time zone and daylight saving rules.
Location data: Countries States Cities Database (ODbL 1.0).
If clocks changed at that time, we will ask which occurrence matches the birth record.
Calculation scope
Birth chart calculator FAQ
What does this free birth chart calculator include?
It shows the Sun, Moon and eight planets by sign and degree. With a recorded birth time and city, it also calculates the Ascendant, Midheaven, Placidus houses and major natal aspects.
What happens if I do not know my birth time?
The calculator keeps a date-only planetary chart and withholds the Ascendant and houses rather than inventing them. The Moon can move noticeably during a day, so its exact degree is less certain.
Does the calculator handle daylight saving time?
Yes. Select the birth city and enter the local time from the birth record. Historical IANA time-zone rules are applied, including repeated and nonexistent daylight-saving times.
Is a birth chart a guaranteed prediction?
No. The astronomical positions are calculated, but their interpretation is symbolic and conditional. Use the chart for reflection rather than fixed outcomes.