Timing calculator
How long is your China stay window in practice?
This page helps you translate actual entry and exit times into a practical timing view for the two main policy families modeled in this release: the 30-day unilateral visit rule and the 240-hour transit rule.
Stay-length calculator
Enter a mainland China arrival and departure to estimate the raw time window and the practical deadline landmarks used in the current public guidance.
When to use this page
Use it when you already know the nationality rule but need to understand the timing of your actual itinerary. It is especially helpful when a route is close to the edge of the 240-hour transit window.
What this page does not do
This page does not decide nationality coverage, trip-purpose coverage, or whether a route satisfies the third-country or third-region rule. Use the other tools for those judgments.