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Contact SynastryCalc
Questions, feedback, or a calculation that looks off? Email us — a real person reads every message.
We usually reply within 2–3 business days. Including your birth data (dates, times, and places for both people) helps us reproduce the chart and answer faster.
What to email us about
Technical problems
A calculator that will not load, a chart that renders incorrectly, or an error page — include the two birth data sets you entered and what you expected to see.
Calculation or data corrections
If a planetary position, time zone, or house placement looks wrong for a date and place, send us the exact birth data and we will double-check it against professional astronomical records.
Feedback and feature ideas
Missing a planet, aspect, or report section? Requests from readers directly shape what we build next.
Privacy requests
Questions about your data, or a request to delete a saved result page — see the privacy policy for what we store and how long we keep it.
Quick answers before you write
- How long do saved result pages stay online?
- Result links expire automatically after 30 days. After that, simply run the calculator again with the same birth data to recreate the chart.
- Do I need an account to use the calculators?
- No. Every tool on SynastryCalc is free and works without a sign-up or email address.
- I don't know my exact birth time. Can I still use the site?
- Yes. The outer planets and most aspects stay close to their positions all day, but the Ascendant and house placements need an exact time. Our guides explain which parts of the reading remain reliable without one.
- Can you interpret my relationship for me personally?
- We can help you understand what a specific aspect or overlay means, but SynastryCalc is an educational tool — we don't offer personal predictions or relationship advice by email.
For anything else — including how the site handles birth data, saved result pages, and third-party services — see the privacy policy and the terms of service.
Ready to compare two charts? Jump back to the free synastry calculator.
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