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Common queries and details about using this utility.
To convert epoch time to date, enter or paste your Unix timestamp into the input field above. The converter automatically detects whether the timestamp is in seconds (10 digits), milliseconds (13 digits), microseconds (16 digits), or nanoseconds (19 digits) and immediately displays the human-readable calendar date in ISO 8601, RFC 2822, UTC, and your local operating system timezone. For example, Unix epoch timestamp 1700000000 converts to Tuesday, November 14, 2023, 10:13:20 PM UTC.
A Unix epoch timestamp (POSIX time) represents the total number of elapsed seconds since 00:00:00 UTC on January 1, 1970 (the Unix Epoch), not counting leap seconds. It provides an unambiguous, timezone-independent integer representation of time widely used in databases, distributed systems, and APIs.
The parser inspects the integer digit count: 10 digits or fewer represent Seconds (e.g., 1700000000), 13 digits represent Milliseconds (JavaScript Date.now()), 16 digits represent Microseconds (PostgreSQL / Python), and 19 digits represent Nanoseconds (Go / Rust / Linux kernel hardware timers).
Legacy 32-bit signed integers overflow at 03:14:07 UTC on January 19, 2038 (timestamp 2,147,483,647), wrapping around to December 13, 1901. Modern 64-bit systems (BIGINT in SQL, int64 in Go/Rust/C) handle timestamps extending over 292 billion years into the future, completely eliminating overflow risk.
No. 100% of conversion logic, timezone matrix calculations, batch processing, SQL range bounds generation, and code snippet rendering run strictly in-memory inside your local web browser sandbox using client-side JavaScript. Zero network requests or tracking retention occur.
Switch to the 'SQL Query Bounds' tab to generate exact Unix epoch boundary numbers for Today, Yesterday, This Week, This Month, or This Year. Then query your table: `SELECT * FROM events WHERE created_at BETWEEN 1788000000 AND 1788086399;`.
Navigate to the 'Batch Logs Converter' tab, paste your multi-line timestamp or date strings, and click 'Convert All Lines' (or press Ctrl+Enter). You can inspect the parsed dates in a tabular preview and export the dataset as a clean CSV file with one click.
Coordinated Universal Time (UTC) is the global reference time standard that never observes Daylight Saving Time (DST). Local Time adjusts UTC by your operating system's geographic timezone offset and seasonal DST shifts. This tool provides both UTC and Local representations along with an 8-city Global Timezone Matrix.
The JavaScript Date constructor expects milliseconds, not seconds. Passing a 10-digit seconds timestamp (e.g. 1700000000) represents only ~19.6 days past Jan 1, 1970. You must multiply seconds by 1,000: `new Date(seconds * 1000)`.
Subtract the smaller timestamp from the larger timestamp to obtain the delta in seconds. You can then paste the seconds value into the 'Seconds Breakdown' tab to view a decomposed human duration in years, months, days, hours, minutes, and seconds.
Press 'Alt+P' for DevToys Smart Clipboard Auto-Detect, 'Alt+C' for 1-Click Quick Copy, '/' to quickly focus the timestamp input, 'Esc' to clear and reset the workspace, 'Ctrl+Enter' (or Cmd+Enter) to trigger conversion, 'Alt+V' to toggle 2-column Split vs Stacked layout density, 'Alt+S' to launch Developer API Code Snippets and download standalone script files, 'Alt+K' (or '?') to view the Shortcuts Guide, 'Alt+R' for Surprise Me / Random timestamp, and 'Arrow Left/Right' to switch studio tabs.
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Chained Workflows (Piping)
Send this tool's output directly into another utility without manual copy-paste.
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Convert Epoch Time to Date — Unix Timestamp Converter
Universal Unix epoch and timestamp converter with multi-unit precision (seconds, milliseconds, microseconds, nanoseconds), batch processing, SQL range bounds, and timezone matrix. 100% client-side privacy.
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100% Client-Side JS
Parsed locally in WebCrypto & V8
🔒
Zero Server Uploads
Data never leaves device sandbox
📐
Multi-Precision Scale
Seconds, ms, µs, ns auto-detect
🌐
Global Timezone Grid
8 major world time centers
📋
1-Click Code & Formats
12 languages, CSV & JSON reports
Current Epoch (Seconds)
0
Current Epoch (Milliseconds)
0
Hotkeys: / focus, Esc reset, Ctrl+Enter convert
Nudge Time:
🕰️
Ready to Convert Timestamps
Choose a benchmark scenario below to load sample timestamps, or paste your Unix timestamp or date string from the clipboard.
SQL Range Bounds
Programming Language Snippets A-ZCopy syntax for getting and parsing timestamps
PostgreSQL `TIMESTAMP WITHOUT TIME ZONE`, Cassandra, Python `datetime.now().timestamp()`, high-frequency trading
Nanoseconds (ns)
19 Digits
1800000000000000000
Golang `time.Now().UnixNano()`, Rust `SystemTime`, Linux kernel hardware timers, OpenTelemetry traces
Real-World Developer Use Cases
🔑 JWT & Auth Expiry
Decode and verify `exp` (expiration) and `iat` (issued at) claims in OAuth and JWT tokens to debug expired session bugs.
📋 Server Log Auditing
Batch-convert Nginx, Apache, or Docker container log timestamps to human-readable local time during incident postmortems.
🗄️ SQL Query Filtering
Generate exact Unix timestamp boundaries for today, this week, or this month to execute high-performance index range scans.
⏱️ Cache TTL & Rate Limits
Calculate Redis expiration timestamps and API rate limiter token buckets without manual timezone conversions.
Time Handling Best Practices & Common Pitfalls
✓ Best Practices
Always store timestamps in UTC Unix seconds or ISO 8601 UTC strings in database columns.
Use 64-bit integer types (`BIGINT` in SQL, `int64` in Go/Rust) to prevent the Year 2038 overflow bug.
Explicitly document whether an API endpoint expects seconds or milliseconds in its schema.
Convert to user local time only at the final UI presentation layer using standard Intl APIs.
⚠️ Common Pitfalls to Avoid
Passing seconds to JavaScript new Date(timestamp) without multiplying by 1,000 (results in year 1970).
Assuming every day has 86,400 seconds during Daylight Saving Time transition days (can be 23 or 25 hours).
Storing local timezone offsets without storing the IANA timezone name (e.g. `America/New_York`).
Parsing raw timestamp strings with 32-bit signed integers in legacy C/C++ libraries.
🏛️ Architectural Benchmark: Telekit vs Competitors
Offline-First Standard
See how Telekit Unix Epoch Converter compares against legacy timestamp websites and developer tool suites on privacy, multi-precision scale detection, and batch productivity.
Feature & Capability
Telekit Tools
EpochConverter.com
DevToys
CyberChef
RapidTables
100% Client-Side Privacy
Zero Server Network Calls
Ad Trackers & Logs
Yes (Desktop App Only)
Yes (In-Browser)
Ad Tracking Scripts
Multi-Precision Scale Detection
s, ms, µs, ns (10–19 Digits)
s and ms Only
s and ms Only
Seconds Only
Seconds Only
Smart Clipboard Auto-Detect
Alt+P Format Sensing
None
Native Desktop Auto
None
None
Batch Logs & CSV Export
Table Preview + RFC 4180 CSV
Plain Text Only
None
Chained Regex Recipe
None
SQL Query Range Bounds
UTC & Local (Today/Wk/Mo/Yr)
Static Bounds Table
None
None
None
Developer Code Snippets & Downloads
12 Languages + .sh/.py/.ts Files
Static Code Only
None
None
None
Live Ticker & Delta Nudges
Live ms Clock + ±10m/1h/1d/1w
Seconds Ticker Only
Static Current Time
None
Static HTML Clock
Frequently Asked Questions
Common questions about Unix epoch timestamps, scale detection, and SQL range bounds
How do I convert epoch time to date online?
To convert epoch time to date, enter or paste your Unix timestamp into the input field above. The converter automatically detects whether the timestamp is in seconds (10 digits), milliseconds (13 digits), microseconds (16 digits), or nanoseconds (19 digits) and immediately displays the human-readable calendar date in ISO 8601, RFC 2822, UTC, and your local operating system timezone. For example, Unix epoch timestamp 1700000000 converts to Tuesday, November 14, 2023, 10:13:20 PM UTC.
What is a Unix Epoch timestamp?
A Unix epoch timestamp (POSIX time) represents the total number of elapsed seconds since 00:00:00 UTC on January 1, 1970 (the Unix Epoch), not counting leap seconds. It provides an unambiguous, timezone-independent integer representation of time widely used in databases, distributed systems, and APIs.
How does automatic unit precision detection (Seconds, Milliseconds, Microseconds, Nanoseconds) work?
The parser inspects the integer digit count: 10 digits or fewer represent Seconds (e.g., 1700000000), 13 digits represent Milliseconds (JavaScript Date.now()), 16 digits represent Microseconds (PostgreSQL / Python), and 19 digits represent Nanoseconds (Go / Rust / Linux kernel hardware timers).
What is the Year 2038 problem (Y2K38) and how do modern systems prevent it?
Legacy 32-bit signed integers overflow at 03:14:07 UTC on January 19, 2038 (timestamp 2,147,483,647), wrapping around to December 13, 1901. Modern 64-bit systems (BIGINT in SQL, int64 in Go/Rust/C) handle timestamps extending over 292 billion years into the future, completely eliminating overflow risk.
Does this Unix Epoch Converter send my date or timestamp data to external servers?
No. 100% of conversion logic, timezone matrix calculations, batch processing, SQL range bounds generation, and code snippet rendering run strictly in-memory inside your local web browser sandbox using client-side JavaScript. Zero network requests or tracking retention occur.
How do I filter database records by date using Unix epoch timestamps in SQL?
Switch to the 'SQL Query Bounds' tab to generate exact Unix epoch boundary numbers for Today, Yesterday, This Week, This Month, or This Year. Then query your table: `SELECT * FROM events WHERE created_at BETWEEN 1788000000 AND 1788086399;`.
How do I batch-convert multi-line server logs or CSV timestamp lists?
Navigate to the 'Batch Logs Converter' tab, paste your multi-line timestamp or date strings, and click 'Convert All Lines' (or press Ctrl+Enter). You can inspect the parsed dates in a tabular preview and export the dataset as a clean CSV file with one click.
What is the difference between UTC / GMT and Local Time?
Coordinated Universal Time (UTC) is the global reference time standard that never observes Daylight Saving Time (DST). Local Time adjusts UTC by your operating system's geographic timezone offset and seasonal DST shifts. This tool provides both UTC and Local representations along with an 8-city Global Timezone Matrix.
Why does JavaScript 'new Date(seconds)' evaluate to the year 1970?
The JavaScript Date constructor expects milliseconds, not seconds. Passing a 10-digit seconds timestamp (e.g. 1700000000) represents only ~19.6 days past Jan 1, 1970. You must multiply seconds by 1,000: `new Date(seconds * 1000)`.
How do I calculate time difference or duration between two epoch timestamps?
Subtract the smaller timestamp from the larger timestamp to obtain the delta in seconds. You can then paste the seconds value into the 'Seconds Breakdown' tab to view a decomposed human duration in years, months, days, hours, minutes, and seconds.
Which keyboard hotkeys and productivity shortcuts are supported?
Press 'Alt+P' for DevToys Smart Clipboard Auto-Detect, 'Alt+C' for 1-Click Quick Copy, '/' to quickly focus the timestamp input, 'Esc' to clear and reset the workspace, 'Ctrl+Enter' (or Cmd+Enter) to trigger conversion, 'Alt+V' to toggle 2-column Split vs Stacked layout density, 'Alt+S' to launch Developer API Code Snippets and download standalone script files, 'Alt+K' (or '?') to view the Shortcuts Guide, 'Alt+R' for Surprise Me / Random timestamp, and 'Arrow Left/Right' to switch studio tabs.
⌨️ Desktop Keyboard Shortcuts
DevToys Hotkeys
Key Binding
Action
Workflow Context
/
Focus Input Field
Instantly selects single timestamp or batch textarea without clicking