CST to JST Converter

It takes three quick steps:

1. Click the CST field on the left and pick the time you want to convert.
2. The matching JST time updates on the right automatically — there’s no button to press.
3. Need a different day? Click the date field and the result follows, rolling over if it crosses midnight.

JST is 1 hour ahead of CST. In everyday terms, once you know the time on one side you just add 1 hour to get the other — so a call between Beijing and Tokyo is always 1 hour apart.

Right now the time in Japan Standard Time (JST) is Tuesday, June 30, 2026 · 2:54:03 AM. It ticks every second, so you’re always looking at the live JST clock.

And in China Standard Time (CST), it’s currently Tuesday, June 30, 2026 · 1:54:03 AM. Compare the two and the 1 hour gap is easy to see.

For example, a 9:00 AM CST meeting takes place at 10:00 AM JST. The trick is to aim for a slot that lands inside normal working hours on both sides. Once you’ve found a time, hit Share on the converter to copy a link with the time built in — easy to send to a colleague. Juggling three or more zones? The meeting planner highlights the hours that overlap for everyone.

The labels CST and JST are fixed offsets, so the result on this page is always exact. Neither side changes its clocks for daylight saving, so the difference you see here is the same in summer and winter.

We don’t guess. CST and JST times are worked out from the official IANA time zone database, the trusted standard that operating systems use worldwide. Because daylight-saving rules and regional offsets do change over time, we track those updates rather than relying on a fixed number — which is exactly where many converters slip up.