Free tools
Calculators that respect you.
Quick, private, evidence-based — and never a weight or BMI question. Everything runs in your browser; nothing is sent anywhere.
Due date calculator
Estimate your due date and current week from your last period — no sign-up, no weight questions.
Open calculator →Ovulation & fertile window calculator
Find your estimated ovulation day and fertile window from your cycle — private, right in your browser.
Open calculator →Pregnancy calorie calculator
See the evidence-based calories to add each trimester — the honest way, without asking your weight.
Open calculator →