Why ZodiaScope exists
Most astrology content on the internet is vague. Most astronomy tools are hard to use. ZodiaScope exists to close that gap: precise, astronomy-accurate calculators for the sun, the moon, and the stars, paired with the zodiac interpretations that make the sky feel personal. We believe the night sky deserves better than guesswork, and that astrology is more fun when the math underneath it is right.
What we offer
ZodiaScope offers a growing set of free calculators and reference tools:
- Solar calculators, including sunrise and sunset times, golden hour, and sun position by location and date
- Lunar calculators, including moon phases, moonrise and moonset times, and illumination
- Astrology calculators and tools, such as planet placements, zodiac sign lookups, and compatibility guides
Every tool is free to use, with no account, no sign-up, and no installation required.
The accuracy commitment
Our calculators are built on real astronomical computation, the same kinds of methods used by professional sky almanacs and planetarium software. We verify results against trusted reference sources before we publish anything, and we say plainly when a value is approximate rather than exact. Where a tool has known limits, we disclose them right on the page, because a tool you cannot trust is not a tool worth keeping.
Free forever, no sign-up
ZodiaScope will always be free to use. We do not require accounts, we do not put calculations behind paywalls, and we do not ask for personal information to answer a question about the sky. The site is supported by advertising, which is why you will see ads alongside the tools. That tradeoff keeps every calculator free for everyone, including students, hobbyists, and the simply curious.
Who it is for
ZodiaScope is for anyone who looks up. If you plan photography around golden hour, track the moon through its phases, follow the planets, or simply love reading about your sign, this site is built for you. Bring your curiosity; we will bring the math.
How we work
We build each tool from documented astronomical methods, then check its output against trusted references before it goes live. When a value is approximate by nature, such as a moon phase percentage, the tool says so right on the page instead of pretending to a precision it does not have. And when readers spot something that looks wrong, we investigate it against our sources and fix confirmed errors. Accuracy is not a claim we make once; it is a habit we keep.
If you have a tool request, a correction, or feedback of any kind, we would genuinely like to hear from you. Visit our contact page and send a message. Every one is read.