Unix Timestamp Converter

// current epoch
Math.floor(Date.now() / 1000)   // seconds
Date.now()                      // milliseconds

// timestamp → date
new Date(1785658820 * 1000).toISOString()

// date → timestamp
Math.floor(new Date('2026-08-02T08:20:20Z').getTime() / 1000)

import time, datetime as dt

int(time.time())             # seconds
time.time_ns() // 1_000_000  # milliseconds

# timestamp → date
dt.datetime.fromtimestamp(1785658820, tz=dt.timezone.utc)

# date → timestamp
int(dt.datetime.fromisoformat("2026-08-02T08:20:20Z").timestamp())

import java.time.Instant;

Instant.now().getEpochSecond();  // seconds
System.currentTimeMillis();      // milliseconds

// timestamp → date
Instant.ofEpochSecond(1785658820L);
Instant.ofEpochMilli(1785658820571L);

// date → timestamp
Instant.parse("2026-08-02T08:20:20Z").getEpochSecond();

import java.time.Instant

System.currentTimeMillis()   // milliseconds (Android)
Instant.now().epochSecond    // seconds

// timestamp → date
Instant.ofEpochMilli(1785658820571)

// date → timestamp
Instant.parse("2026-08-02T08:20:20Z").toEpochMilli()

Int(Date().timeIntervalSince1970)         // seconds
Int(Date().timeIntervalSince1970 * 1000)  // milliseconds

// timestamp → date
Date(timeIntervalSince1970: 1785658820)

// date → timestamp
ISO8601DateFormatter().date(from: "2026-08-02T08:20:20Z")!.timeIntervalSince1970

time.Now().Unix()       // seconds
time.Now().UnixMilli()  // milliseconds

// timestamp → date
time.Unix(1785658820, 0).UTC()
time.UnixMilli(1785658820571)

// date → timestamp
t, _ := time.Parse(time.RFC3339, "2026-08-02T08:20:20Z")
t.Unix()

date +%s     # seconds (GNU + BSD)
date +%s%3N  # milliseconds (GNU)

# timestamp → date
date -u -d @1785658820   # GNU/Linux
date -u -r 1785658820    # macOS/BSD

# date → timestamp (GNU)
date -d '2026-08-02T08:20:20Z' +%s

-- PostgreSQL
SELECT to_timestamp(1785658820);
SELECT extract(epoch FROM now())::bigint;

-- MySQL
SELECT FROM_UNIXTIME(1785658820);
SELECT UNIX_TIMESTAMP();