Unix Timestamp Converter

What Unix time is

Unix time counts the seconds since 00:00:00 UTC on 1 January 1970, the Unix epoch. It has no time zone: 1790947200 is the same instant in Kyiv, New York and Tokyo, and only the way it is displayed changes. It ignores leap seconds, so every day is exactly 86,400 seconds long.

The trouble is that systems disagree on the unit. Count the digits:

• Seconds · 10 digitsUnix date +%s, Python time.time(), PostgreSQL, JWT exp.
• Milliseconds · 13 digitsJavaScript Date.now(), Java currentTimeMillis().
• Microseconds · 16 digitsPython datetime precision, many tracing tools.
• Nanoseconds · 19 digitsGo UnixNano(), Linux clock_gettime.

A signed 32-bit integer runs out at 2147483647, which is 03:14:07 UTC on 19 January 2038. Systems that still store Unix time in 32 bits will wrap around to December 1901 — the year 2038 problem.

How to use the converter

1. Type or paste a timestamp, or press Use Now. The unit is detected from the number of digits; change Unit if it guessed wrong.
2. Read the result in UTC, in your own time zone and as a relative time.
3. To go the other way, type a date such as 2026-10-02T13:20:00Z or use Pick a Date. A date without a zone is read in the zone you choose under Dates Without a Zone Are In.
4. Add the time zones you work with — your teammates', your servers'.
5. Turn on Batch Mode to convert a whole column from a log or a spreadsheet, then copy it as CSV.

Examples

1790947200

1790947200000

2026-10-02T13:20:00Z

1790947200 read as milliseconds

Unix time in your language

# Now, in seconds
import time
time.time()        # 1790947200.482 (float)
int(time.time())   # 1790947200

# Timestamp to an aware datetime
from datetime import datetime, timezone
datetime.fromtimestamp(1790947200, tz=timezone.utc)
# datetime(2026, 10, 2, 13, 20, tzinfo=timezone.utc)

// Now — JavaScript counts milliseconds
Date.now()                      // 1790947200482
Math.floor(Date.now() / 1000)   // 1790947200

// Seconds to a Date: multiply by 1000
new Date(1790947200 * 1000).toISOString()
// '2026-10-02T13:20:00.000Z'

# Now, in seconds
date +%s

# Timestamp to a date (UTC)
date -u -d @1790947200   # Linux (GNU date)
date -u -r 1790947200    # macOS (BSD date)

-- Now, in seconds
SELECT extract(epoch FROM now())::bigint;

-- Timestamp to timestamptz
SELECT to_timestamp(1790947200);
-- 2026-10-02 13:20:00+00 (shown in the session's time zone)

Frequently asked questions

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