Unix Timestamp Converter in Ruby — Code Examples
A Unix timestamp is the number of seconds (or milliseconds) since 1 January 1970 00:00:00 UTC. Here is how to get the current timestamp, convert to a human-readable date, and parse date strings back to timestamps in each language.
Ruby's Time class works natively with Unix timestamps. Use Time.now.to_i for the current epoch and Time.at to convert back.
require 'time'
# Current Unix timestamp (seconds)
now = Time.now.to_i
puts now
# Current timestamp in milliseconds
now_ms = (Time.now.to_f * 1000).to_i
puts now_ms
# Timestamp → Time object
t = Time.at(1700000000)
puts t.utc.strftime("%Y-%m-%d %H:%M:%S UTC") # 2023-11-14 22:13:20 UTC
# Timestamp → formatted string with timezone
t_ist = Time.at(1700000000).getlocal("+05:30")
puts t_ist.strftime("%Y-%m-%d %H:%M:%S %Z") # 2023-11-15 03:43:20 +0530
# ISO 8601 string → timestamp
ts = Time.parse("2023-11-14T22:13:20Z").to_i
puts ts # 1700000000
# DateTime string → timestamp (any format)
ts2 = Time.strptime("14/11/2023 22:13:20", "%d/%m/%Y %H:%M:%S").to_i
puts ts2- Time.now.to_i returns whole seconds; use Time.now.to_f for fractional seconds or * 1000 for milliseconds.
- Time.at always returns a Time object in the local timezone — call .utc to switch to UTC.
- require 'time' is needed for Time.parse; it is not loaded by default.
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Open Epoch/Unix Converter →Unix Timestamp Converter in JavaScript / Node.js
JavaScript's Date object works in milliseconds. Divide by 1000 for Unix seconds. Use Intl.DateTimeFormat or date-fns for formatting.
Unix Timestamp Converter in Python
Python's datetime module and time module both handle Unix timestamps. Use datetime.fromtimestamp() for local time and datetime.utcfromtimestamp() for UTC.
Unix Timestamp Converter in Go
Go's time package uses int64 for Unix timestamps. time.Unix() converts to a time.Time value; .Unix() on a time.Time returns the epoch seconds.
Unix Timestamp Converter in Java
Java 8+ introduced the java.time package. Use Instant for UTC timestamps and ZonedDateTime for timezone-aware conversion.
Unix Timestamp Converter in PHP
PHP's time() returns the current Unix timestamp. Use date() or DateTime for formatting and strtotime() for parsing.
Unix Timestamp Converter in Rust
Rust's std::time::SystemTime provides the raw timestamp. The chrono crate adds human-readable formatting and timezone support.
Unix Timestamp Converter in C# / .NET
C# uses DateTimeOffset for timezone-aware timestamps. ToUnixTimeSeconds() and FromUnixTimeSeconds() handle Unix epoch conversion.