JSON Date Converter [2025]
Convert between JSON date formats and human-readable dates. Perfect for developers working with APIs and data integration.
Understanding JSON Date Formats
Common Formats
- •
.NET Style
/Date(1429192143000)/
- •
ISO 8601
2024-01-01T12:00:00Z
- •
Unix Timestamp
1672567200000
Key Features
- •
Format Detection
Automatic recognition of common formats
- •
Timezone Support
Handles UTC and local timezone conversions
- •
Multiple Outputs
Convert to various JSON formats
Code Examples
JavaScript
Parse .NET JSON Date
const jsonDate = "/Date(1429192143000)/"; const date = new Date( parseInt(jsonDate.match(/\d+/)[0]) );
Python
Parse ISO 8601
from datetime import datetime
date_str = "2024-01-01T12:00:00Z"
date = datetime.fromisoformat(
date_str.replace('Z', '+00:00')
)Frequently Asked Questions
Why do JSON dates have different formats?
JSON doesn't have a native date type, so different platforms and libraries have developed their own conventions. .NET uses the /Date()/ format, while many modern APIs use ISO 8601 strings.
What's the difference between timestamps and ISO dates?
Timestamps are milliseconds since Unix epoch (January 1, 1970), while ISO 8601 dates are human-readable strings with timezone information. Timestamps are more compact but less readable.
How do I handle timezone differences?
ISO 8601 dates can include timezone offsets (e.g., +02:00) or Z for UTC. When working with timestamps, they're typically in UTC and should be converted to local time for display.
Which format should I use in my API?
ISO 8601 is recommended for modern APIs as it's widely supported, human-readable, and includes timezone information. However, timestamps can be more efficient for storage and calculations.
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