Due Date Calculator API
Due Date Calculator estimates pregnancy due dates using either last menstrual period or conception date, providing comprehensive pregnancy timeline information.
Live Test API
Try out the Due Date Calculator with a live request and see the response in real-time.
API Request
API Response
1234567891011121314151617181920212223242526272829303132{ "status": "ok", "error": null, "data": { "calculation_method": "last_period", "last_period_date": "2024-01-01", "estimated_conception_date": "2024-01-15", "due_date": "2024-10-07", "current_progress": { "days_pregnant": 715, "weeks_pregnant": 102, "days_into_week": 1, "formatted": "102 weeks, 1 days", "trimester": 3, "percentage_complete": 255.36 }, "time_until_due": { "days": 0, "weeks": 0, "days_extra": 0, "formatted": "Past due date", "is_overdue": true }, "upcoming_milestones": [], "important_dates": { "end_first_trimester": "2024-04-01", "end_second_trimester": "2024-07-08", "full_term_begins": "2024-09-16" }, "disclaimer": "This is an estimate only. Due dates can vary. Consult your healthcare provider for medical advice." } }
Multiple Access Methods
REST API with multiple response formats, GraphQL, and MCP for AI agents
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JavaScript Object Notation
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Extensible Markup Language
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Human-readable data format
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Comma-separated values
GraphQL
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MCP
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Frequently Asked Questions
Get answers to common questions about the Due Date Calculator API
What does the Due Date Calculator API do?
Due Date Calculator estimates pregnancy due dates using either last menstrual period or conception date, providing comprehensive pregnancy timeline information. The API returns structured data in JSON, XML, or YAML format, making it easy to integrate into any application or workflow.
How fast is the Due Date Calculator API?
The Due Date Calculator API has an average response time of 211ms, with a median (p50) of 200ms and 99th percentile of 287ms. Our infrastructure maintains 99.9% uptime with servers distributed globally for low latency.
How much does the Due Date Calculator API cost?
Each call to the Due Date Calculator API uses 1 credit. The free tier includes 100 credits per month. Paid plans start at $29.99/month with higher limits, and enterprise plans offer custom pricing with priority support.
How do I authenticate Due Date Calculator API requests?
Include your API key in the request header as X-API-Key: your_key_here. All requests are made over HTTPS for security. You can get your API key by signing up for a free account.
What HTTP methods does Due Date Calculator support?
The Due Date Calculator API supports GET requests. Simply pass your parameters as query strings in the URL. Check our documentation for detailed parameter specifications.
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