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Unix Timestamp (Milliseconds)
Dates & Numbers
Matches a 13-digit Unix timestamp in milliseconds.
/^1[0-9]{12}$/How it works
JavaScript's Date.now() returns milliseconds; many APIs (notably Stripe, GCP) use seconds. Mixing the two is a frequent bug. This regex checks for the 13-digit ms form.
Test Cases
Should Match
- 1716552896123
- 1000000000000
Should NOT Match
- 1716552896
- 171655289612345
Quick Summary
Matches a 13-digit Unix timestamp in milliseconds.