dates · free calculator
Thailand visa day counter
Count calendar days between your arrival and the permitted-until date stamped in your passport. The tool includes both arrival and expiry dates, then compares your planned departure with that expiry. It does not infer a visa allowance, grant an extension, or decide whether you qualify for entry.
Complete the main fields. Optional details start at zero. Example inputs are fictional, not local quotes.
Your calculation
Result from your inputs
Complete the main fields to see a result. Inputs stay in this page.
See the calculation.
Inclusive stay days = expiry − arrival + 1. Departure margin = expiry − planned departure, in whole calendar days.
A worked example
Arrival 1 October, permitted until 30 October: 30 inclusive calendar days.
What the result leaves out
Use your actual stamp, not the visa’s entry-validity date or an assumed exemption duration. A nonnegative margin is only a date comparison, not confirmation of immigration compliance.
For help choosing inputs, read the worked guide for this calculation.
Primary reference: MDN: Date.UTC
Checked 23 October 2026 · Source date: current documentation.
Calendar mechanics only