MCP server

BabyData pregnancy calculators Official

uk.co.babydata/pregnancy-calculators

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

UK due date, ovulation, pregnancy weeks and maternity pay calculators. Not medical advice.

Working at last checkVerified publisher: babydata.co.ukAbout 723 tokens per request once connected4 tools

https://babydata.co.uk/mcp

At a glance

Type: MCP server
Publisher: babydata.co.uk (verified by the MCP Registry)
Status: Working at last check
Tools: 4
Token cost: About 723 tokens per request
Sets up in: Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok
Last checked: 26 Oct 2026, 08:29 UTC

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http pregnancy-calculators https://babydata.co.uk/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.pregnancy-calculators]
url = "https://babydata.co.uk/mcp"

Gemini CLI

{"mcpServers":{"pregnancy-calculators":{"httpUrl":"https://babydata.co.uk/mcp"}}}

Cursor

{"mcpServers":{"pregnancy-calculators":{"url":"https://babydata.co.uk/mcp"}}}

VS Code

{"servers":{"pregnancy-calculators":{"type":"http","url":"https://babydata.co.uk/mcp"}}}

Antigravity

agy mcp add pregnancy-calculators https://babydata.co.uk/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"pregnancy-calculators","server_url":"https://babydata.co.uk/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"pregnancy-calculators","server_url":"https://babydata.co.uk/mcp"}

calculate_due_date ~247 tokens
Estimate a pregnancy due date and current stage using Naegele's rule, from the last menstrual period (LMP), conception date, or an IVF embryo-transfer date. Returns the estimated due date, weeks pregnant now, trimester and weeks remaining. Informational only, not medical advice.
calculate_ovulation ~143 tokens
Estimate the likely ovulation day, the fertile window and the next period from the first day of the last period and the average cycle length. Informational only.
maternity_pay Moves money · ~167 tokens
Estimate UK Statutory Maternity Pay over the 39 weeks under gov.uk rules: 90% of average weekly earnings for 6 weeks, then the lower of the statutory flat rate or 90%. Uses the 2026-27 gov.uk flat rate of £194.32 a week, which changes each April. Estimate only, not advice.
pregnancy_weeks ~166 tokens
Work out how many weeks and days pregnant someone is, the trimester and progress through the 40 weeks, from either the LMP or the due date. Informational only, not medical advice.

Due Date
Estimate a due date from LMP, conception, or ultrasound, with ACOG redating rules.
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