Date & Time Tools - Free Online Calculators & Converters
Calculate age, date differences, convert timezones, and more with our comprehensive suite of free online date and time tools.
Perfect for travel planning, event scheduling, and business calculations with instant results and professional-grade functionality.
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Timestamp Converter — Free Unix Time to Date Converter
Convert Unix timestamps to human-readable dates and vice versa instantly.
Supports milliseconds, multiple timezones, and batch processing capabilities.
How to Use the Timestamp Converter
Select conversion type: Unix to Date or Date to Unix using the tabs
Configure options like timezone, output format, and precision (seconds vs milliseconds)
Enter timestamps or dates manually, use current time, or upload multiple values
Click convert to see results instantly, then copy or export as CSV
Powerful Features
Real-World Examples
Web Development
Convert JavaScript timestamps (milliseconds) to readable dates for displaying user-friendly times in web applications
Database Management
Transform Unix timestamps from database records into human-readable formats for reports and analytics
API Integration
Handle different timestamp formats when working with various APIs that use seconds or milliseconds
Log Analysis
Convert Unix timestamps from server logs into readable dates for debugging and monitoring
Common Use Cases
Developers working with timestamps
Convert between different timestamp formats when building applications, debugging code, or handling API responses
Data analysts processing time series
Transform Unix timestamps from databases or logs into readable dates for analysis, reporting, and visualization
System administrators managing servers
Convert timestamp data from log files, system monitoring, and backup schedules into human-readable formats
International teams coordinating across timezones
Convert timestamps to different timezone formats for global team collaboration and scheduling
Understanding Unix Timestamps
A Unix timestamp represents the number of seconds that have elapsed since January 1, 1970 (the Unix epoch).
This standardized way to represent dates and times in computing is independent of timezones, making it ideal for storing and transmitting time data.
Standard Unix timestamps use seconds (10-digit numbers), while millisecond timestamps provide higher precision (13-digit numbers).
JavaScript typically uses milliseconds, while many other systems and programming languages use seconds.
Common Mistakes & Tips
Mistake
Mixing seconds and milliseconds
Tip
Check if your timestamp is 10 digits (seconds) or 13 digits (milliseconds) and use the appropriate precision setting
Mistake
Wrong timezone conversions
Tip
Unix timestamps are always in UTC. The timezone setting only affects the display format, not the actual timestamp value
Mistake
Invalid date formats
Tip
Use ISO 8601 format (YYYY-MM-DD) or natural language dates. The converter handles multiple date formats automatically
Mistake
Large batch processing errors
Tip
Process smaller batches or check each line individually if bulk conversion fails for some entries
Frequently Asked Questions
What is a Unix timestamp?
A Unix timestamp represents the number of seconds that have elapsed since January 1, 1970 (the Unix epoch). It's a standardized way to represent dates and times in computing, independent of timezones.
What's the difference between seconds and milliseconds?
Standard Unix timestamps use seconds (10-digit numbers), while millisecond timestamps provide higher precision (13-digit numbers). JavaScript typically uses milliseconds, while many other systems use seconds.
How do I handle timezones in timestamp conversion?
Unix timestamps are always in UTC. When converting to human-readable dates, you can specify the output timezone. The timestamp itself remains the same regardless of the timezone used for display.
Can I convert multiple timestamps at once?
Yes! Use our bulk conversion feature to process multiple timestamps or dates simultaneously. Simply enter one value per line in the bulk conversion textarea.
What date formats are supported?
We support ISO 8601 format, human-readable format, date-only, datetime, time-only, and custom formats. You can also define your own format using our custom format option.
Why are my timestamp conversions showing wrong dates?
This usually happens when you mix seconds and milliseconds. Check if your timestamp is 10 digits (seconds) or 13 digits (milliseconds) and use the appropriate toggle setting.
Travel Planning
Use timezone converter and date difference tools for trip planning
Event Planning
Calculate days until events and find day of week for scheduling
Business Calculations
Use business days calculator for project timelines
How to Use Our Date & Time Tools
Getting started with our tools is simple and straightforward:
Select the specific tool you need from the available options above
Input your date, time, or timezone information in the provided fields
View your results instantly, with additional context and related information
Copy or export your results as needed for your projects or documentation
Powerful Features
Frequently Asked Questions
Are these date and time tools really free?
Yes, all our date and time tools are completely free to use with no hidden charges, registration requirements, or usage limits.
Do I need to download any software?
No downloads required! All tools run directly in your web browser using modern JavaScript, ensuring instant access and compatibility.
How accurate are timezone conversions?
Our timezone converter uses the latest IANA timezone database and accounts for daylight saving time changes, ensuring high accuracy for timezone conversions.
Can I use these tools on mobile devices?
Absolutely! All our tools are fully responsive and work seamlessly on smartphones, tablets, and desktop computers.
Do you store my data or calculations?
No, we don't store any of your input data or calculation results. All processing happens locally in your browser for complete privacy.
What date formats are supported?
Our tools support various date formats including MM/DD/YYYY, DD/MM/YYYY, ISO format (YYYY-MM-DD), and natural language inputs.