Age on a date
Find completed age on any selected date. You do not have to use today as the reference date.
Family and life calculators
Choose a date or budget tool for your family's stage, keeping child-raising, college, pets and long-term living questions separate.
Which tool fits this question?
Age uses completed years since birth. Gestational age uses the last period or a clinician-confirmed due date. Child budgets split costs by age stage. College budgets separate housing months from living-expense months so summer rent is not missed.
- What budget is needed up to age 18 or college graduation?
- How can I budget for 12 months of housing but term-time living expenses?
- What are the gestational age and due date based on my known dates?
Family costs are your own budgets, not typical Taiwan prices. Pregnancy date estimates cannot replace a clinician's assessment or ultrasound.
Family and life · 8 tools
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Monthly pet budget
Plan regular pet expenses and a separate emergency reserve. Convert annual charges into monthly provisions.
Rent or buy cost comparison
Compare nominal renting cost with buying and selling a home over the same period. State your own resale assumption rather than treating it as a prediction.
Premature infant corrected age
Calculate an educational corrected-age reference for a child born early. Enter completed pregnancy weeks and the extra days separately.
Due date and pregnancy weeks
Estimate a due date and pregnancy weeks from a known reference. Choose the first day of the last menstrual period or a clinician-confirmed due date.
Child-raising budget
Plan future child-raising costs by age stage, with an optional separate estimate of income lost during leave. Replace every example with your household's assumptions.
University living-cost budget
Separate tuition, accommodation and other living costs across university years. Housing months may differ from the months spent on campus.
Future lifetime living costs
Estimate future living spending from your current age to a chosen birthday. Compare different living-cost and retirement assumptions.