Due Date Calculator API GET

https://api.apiverve.com/v1/duedatecalculator

Due Date Calculator estimates pregnancy due dates using either last menstrual period or conception date, providing comprehensive pregnancy timeline information.

Try it — live request, no key required

Request

GETapi.apiverve.com/v1/duedatecalculator

Verification

Format

No key required to try it. Get a key to use it in your app.

200 OK

{
  "status": "ok",
  "error": null,
  "data": {
    // Due Date Calculator response payload
  }
}

Code examples — ready to paste, with real parameters

curl "https://api.apiverve.com/v1/duedatecalculator?last_period=2025-06-01" \
  -H "x-api-key: YOUR_API_KEY"

Replace YOUR_API_KEY with your key.Full reference in the docs →

Related in Lifestyle

Menstrual Cycle Calculator/v1/menstrualcycle180 ms→

Ovulation Calculator/v1/ovulationcalculator191 ms→

Access methods

Call it however you build.

One endpoint, many ways in — REST with JSON, XML, YAML, and CSV, plus GraphQL and an MCP interface for AI agents.

JSON

Default REST response

XML

Markup format

YAML

Human-readable

CSV

Tabular export

Beta

GraphQL

Query language

New

MCP

For AI agents

View all integrations →

Zero-code embed

Drop it into any site.

Add an interactive form for Due Date Calculator with a single snippet — no backend, no keys in your markup.

Live preview Demo

LayoutTheme

Loading preview…

Get embed code →Read the docs

Other ways to use Due Date Calculator

Same data, same APIVerve account, same credit balance — one key works on all of them.

Give it to an AI agentConnect over MCP and your agent calls it as a native tool — Claude, Cursor, ChatGPT.on VerveKit Use it in Google Sheets or ExcelA =VERVE() formula fills a column — no script, no export, recalculates in place.on VerveSheets Ground an agent on itA cited, machine-checkable fact your model can't produce on its own.on VerveContext

Questions.

Common questions about the Due Date Calculator API.

Read the docs →

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.

How do I authenticate Due Date Calculator API requests?

Pass your API key in the x-api-key header over HTTPS. One key works across all 300+ APIVerve APIs — there are no per-endpoint credentials.

How much does the Due Date Calculator API cost?

Each call spends 1 credit from your shared pool. The free tier includes 100 credits every month, and paid plans add more headroom.

How fast is the Due Date Calculator API?

Typical responses return in around 200 ms (p50), served from 24 regions under a 99.9% uptime SLA.

What response formats does the Due Date Calculator API support?

JSON by default, plus XML and YAML via the format parameter. GraphQL and an MCP interface for AI agents are available across the catalog.

What HTTP method does the Due Date Calculator API use?

GET over HTTPS, following standard REST conventions with a consistent { status, error, data } response envelope.