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binclock — Frequently Asked Questions
Everything about formats, quality, privacy and how Binary Clock works.
General
Frequently asked questions
Is binclock.com free?
Yes — free, no signup, no download.
Do I need to know binary?
No — a decimal readout shows the time in normal numbers, and our guides teach you how to read the dots.
Does it work on mobile?
Yes — it works in any modern browser on any device.
Binary Clock
Frequently asked questions
What does BCD mean?
Binary-coded decimal — each decimal digit of the time (0–9) is shown as a 4-bit binary number in its own column, which is easier to read than pure binary.
How do I read it?
In each column the dots are worth 8, 4, 2 and 1 from top to bottom; add the lit ones to get the digit. Columns are HH:MM:SS left to right.
Is there a decimal readout?
Yes — the normal digital time is shown under the dots so you can check yourself while learning.
Digital Clock
Frequently asked questions
Why 24-hour?
24-hour time maps cleanly onto the binary clock's hour columns (00–23), so it's the natural companion.
Does it show the date?
Yes — the current date appears under the time.
Analog Clock
Frequently asked questions
Does it show seconds?
Yes — the second hand sweeps while the hour and minute hands track the time.