Date Only to Unix Timestamp – Convert YYYY-MM-DD as UTC
Local only
Explain how a supported date-only value maps to midnight UTC before Unix conversion.
Multi-row timestamp converter
Compare timestamps and ISO 8601 dates. Inputs without an offset use UTC.
Row 1Date -> Timestamp
Milliseconds: 1705276800000Timezone: UTC (no offset provided)ISO: 2024-01-15T00:00:00.000Z
Date-only conversion
What time does YYYY-MM-DD use when converted to Unix time?
A date-only value has no clock time or timezone. VetaTool interprets supported YYYY-MM-DD input as 00:00:00 UTC so the result is deterministic across browsers. This tool is free to use. No account or payment is required.
Last updated
What you can do here
Unix seconds and milliseconds conversion
ISO 8601 parsing
Explicit timezone interpretation
Fractional and negative Unix timestamps
Browser-local processing
Steps
Enter the YYYY-MM-DD value in Date to Timestamp mode.
Confirm the normalized ISO value ends at T00:00:00.000Z.
Add an explicit time and offset instead if the source represents another instant.
Date-only input is normalized to UTC midnight
VetaTool builds the date from UTC calendar fields instead of asking the browser to guess a local timezone.
Date-only example
2024-01-15 maps to the first instant of that UTC day.
Date
2024-01-15
Unix seconds
1705276800
Common questions
Frequently asked questions
Does this use my computer's midnight?
No. Supported date-only input is interpreted as midnight UTC.
What if I mean midnight in another timezone?
Include a clock time with the intended explicit offset before converting.