All Family Calculators
Simple tools to help parents get quick answers on pregnancy, child development, family benefits and nutrition. Free, mobile-friendly and no account needed.
Pregnancy Due Date Calculator
Estimate your baby's due date based on your last menstrual period or conception date. See your pregnancy week, trimester and estimated conception window.
- Calculate by last menstrual period (LMP) or conception date
- Shows current pregnancy week and trimester
- Estimates conception window for LMP method
Child Growth Calculator
Enter your child's age, height and weight to get general growth guidance. Uses simplified reference ranges to give you a clear, non-alarmist overview.
- Works for children aged 0–18 years
- Calculates BMI for children aged 2 and over
- Neutral language with professional referral guidance
Child Benefits Calculator
Estimate monthly and annual child benefit payments. Focused on the Polish 800+ (formerly 500+) programme with clear eligibility notes.
- Estimates monthly and annual 800+ payments
- Covers number of children in household
- Clear disclaimer on official verification
Child Nutrition Calculator
Get estimated daily calorie guidance for your child by age, sex and activity level. Includes hydration reminders and balanced diet tips.
- Age-based daily calorie range estimates
- Adjusts for activity level
- Includes hydration and macro guidance
Who are these calculators for?
These tools are designed for parents, expectant parents, carers and anyone supporting a family with young children. Whether you are newly pregnant and want to know your due date, a parent tracking your child's development, or someone trying to understand what family benefits you might be entitled to — these calculators aim to give you a clear starting point.
Results are estimates based on widely used reference guidelines. They are not a replacement for advice from your doctor, midwife, paediatrician or a qualified financial adviser. Use them as a first step to understand the numbers — then speak to a professional for anything that matters to you.