About Countdown Calculator

Overview

Purpose

Countdown Calculator is a lightweight browser timer for launches, birthdays, deadlines, and anniversaries. It shows days, hours, minutes, and seconds with a stage sized for screenshots and social posts.

Choose countdown-to or days-since mode, hide units you do not need, and pick a card background theme. Copy a plain-text caption such as “14 days until Product launch” in one click.

All state stays on this device. No account, no database, and no server-side storage of your dates or labels.

Who maintains this site

SBFChoice publishes this utility as part of the homelab utility-sites program.

Use the Contact page for accessibility or privacy questions.

Intended uses and scope

Appropriate when: Pick a target date and time, optionally name your event, and get a large live countdown—or days since—for screenshots and social captions. Everything stays in your browser. Not for: The timer uses the device clock and local timezone; it does not send alerts or guarantee clock accuracy.

Maintenance and product principles

Outcomes and UI labels must match published methodology.

Legal and guide routes stay free of ad loaders.

Feedback and support

Report issues with browser version, which options were enabled, and what appeared on screen versus live regions.

Advertising on this site

Third-party ad units are not turned on in this build configuration. Publisher authorization is declared through ads.txt and site metadata; the AdSense account script is included only on the homepage HTML shell for verification, not on legal or help routes.

See the Privacy Policy for the advertising section that matches this configuration.