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BabyData pregnancy calculators

uk.co.babydata/pregnancy-calculators · v1.0.0

New (7 days)

Measured by MCP Station

Last check	Reachable
Checked at	—
Check success 7 / 30 days	—
First-try success 30 days	—
Median response	—
Lookups 30 days	—
Authentication	No auth
MCP version	2025-06-18
Rank score	—
Declared risk	Not declared (tools carry no read/destructive hints)
Capabilities declared	resources, tools
Tool definitions	4 tools · with description 100% · input schema is an object 100% · read/destructive hints 0%

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

streamable-http · https://babydata.co.uk/mcp

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

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

calculate_due_date
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
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.
pregnancy_weeks
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.
maternity_pay
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.

Website · JSON · Text for agents · Registry updated 2026-10-21