Thailand Stay Calculator is a free, independent tool run by Roy, a freelancer based in Hua Hin, Thailand. I built it after the visa-exempt rules changed on 15 September 2026, when friends and neighbours kept asking the same question: how many days do I have left?
Every rule in the calculator comes from official Thai sources: the Royal Gazette notifications, the Tourism Authority of Thailand, the Ministry of Foreign Affairs list of bilateral agreements and Royal Thai Embassy pages. Links to each source are at the bottom of the calculator. I review the rules at least once a month and whenever Thailand announces a change. The date of the last check is shown on the calculator.
This is not a government website and it is not legal advice. Immigration officers make the final decision, and the date stamped in your passport is the one that counts. If your situation is unusual, ask an immigration office or a licensed visa agent.
Rules change and I want this tool to be right. A contact page is coming soon.