Calculators
Ovulation calculator: Figure out your most fertile days
hCG calculator: How to track your hCG levels at home
Pregnancy test calculator: Figure out when a pregnancy test is most accurate
Period calculator: Predict when your next period will arrive
Pregnancy due date calculator
IVF and FET Due Date Calculator
Due Date by Ultrasound Calculator

Craig Lisowski
Head of Data, Information Systems and Trust at NextDoor
Craig Lisowski is Nextdoor’s Head of Data, Information Systems, and Trust, which includes overseeing the company’s data privacy and security. Before joining Nextdoor, Craig was Head of Business Platform Engineering at Square where he oversaw large scale data systems to track money movement for all products, led multiple engineering functions for compliance, direct e-commerce sales, customer success, as well as information technology. Craig also held various technology and business leadership roles at Silicon Graphics, VeriSign, and Oracle. Craig attended Carleton University. Craig is from Ottawa, Canada, has lived in Switzerland, and now lives in Northern California with his wife and two children.