Half Birthday Calculator | WhenMyBaby

X Close Menu

Calculators

all

• Implantation
• Pregnancy Testing
• Pregnancy Calendar
• Due Dates
• Fertility Calculator
• Basal Temp Adjust
• Birthday & Age
• Cycle Stats
• My Cycle Today
• Ovulation Test
• Weight Calculators
• Sleep Calculators
• Conversion Calcs

Pregnancy & Fertility

• Polls
• Quizzes
• Wishes
• BBT Charts
• Menstrual Chart
• Acronyms
• Shopping

Baby Names

all

• Find Baby Names
• Girl Boy Names
• Baby Name Quiz

TTC & Pregnancy Resources

• Expert Q & A
• Pregnancy Test FYI
• Ovulation Detection
• Getting Pregnant
• Pregnancy Glossary
• For Baby and You
• Baby Milestones
• Stickies
• MyMonthlyCycles

Close Menu Half Birthday Calculator

Calculate half birthday for you, your kids, or anyone: 6 months from one's birthday. Some parents use half birthday if their child's birthdays falls on a major holiday or during the summer, to plan an alternative birthday party date. Knowing yours is also handy - why not treat yourself to something a little special! Or give a friend a surprise party!

Birth Date: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 Person's Name (optional): Fill in if calculating someone else's age

Today's date is December 31, 2025 3:59. If your date/time differs, update using Stickies

Related Calculators

• Age Today Calculator
• Baby's First 24 Months Calculator
• Your Age Difference Calculator
• Calendar Maker with Daily Age
• Calculate Your Family's Unique Birthday
• Age and Fertility Calculator
• Premature Baby Corrected Age Calculator at MyMonthlyCycles.com
• More Birthday Calculators

Calculate any wedding anniversary, its year, your age on it, plus special gifts!