What we do
We build free calculators, trackers, and informational guides for parents in 5 countries. Due date calculators. Vaccination schedules. Growth charts. Baby cost estimators. Education fund planners. Fever guides. Sleep trackers. Government benefits eligibility checkers. The whole journey from pregnancy planning through the toddler years.
Each tool follows guidance from the relevant medical authority in your country. AAP and CDC in the US. NHS and NICE in the UK. NHMRC and RCH Melbourne in Australia. CPS and Health Canada up north. IAP across India. We update content as guidelines change.
Why we built this
Parenting information online is a mess. Some sites bury good content behind paywalls. Others demand email addresses for every tool. Many use heavy tracking and sell data to advertisers. Most ignore international users entirely, forcing UK or Indian parents to convert dollars in their heads while reading American-centric advice.
We thought there was a better way. Build tools that work the same on a budget Android in Lucknow as a new iPhone in San Francisco. Localize content properly for each country (not just currency swap). Keep all the heavy lifting in the browser so we never see your personal data. Make everything free, no login, no friction.
Our approach to privacy
Our tools run entirely in your browser using JavaScript. When you calculate your due date, enter your baby's weight, or check fever readings, that information stays on your device. It is never transmitted to our servers. We could not look at it if we wanted to.
This is not just marketing. It is the architecture. Open your browser developer tools and check the network tab while using any calculator. You will see we are not sending your inputs anywhere.
Our coverage
We currently serve parents in:
- United States (default version, dollars, Fahrenheit option, AAP guidance)
- United Kingdom (/uk/, pounds, Celsius, NHS guidance)
- Australia (/au/, AUD, NHMRC and RCH Melbourne guidance)
- Canada (/ca/, CAD, CPS guidance, with provincial notes)
- India (/in/, rupees, IAP guidance, with cultural context)
How we stay free
We display country-targeted banner ads. Aussies see Aussie ads. UK mums see UK ads. American parents see American ads. We do not show personalized ads based on tracking your behavior. We do not sell your data. Ads are country-aware (matching URL prefix) and that is it.
How we update content
Medical guidelines change. We track major updates from AAP, NHS, NICE, NHMRC, CPS, and IAP. When guidance changes (like the AAP's shift to early peanut introduction, or the UK's move to single-dose HPV), we update affected tools and pages.
Our team
We are a small team of parents and developers spread across the 5 countries we cover. Medical content is reviewed by pediatricians in each country before publication. Code is open source where possible.
Get in touch
- General: hello@prenatalcalculator.com
- Medical content corrections: medical@prenatalcalculator.com
- Privacy questions: privacy@prenatalcalculator.com
- Press: press@prenatalcalculator.com