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World

Calendars, ages and math that only exist in each country.

• Korean age calculatorCalculate your Korean age in all 3 systems (international, traditional and year age) and understand the 2023 law that unified legal age in Korea.
• Japanese era converterConvert western years to Japanese eras (Reiwa, Heisei, Showa, Taisho, Meiji), with a landmark year table and the mental math shortcut.
• Tipping around the worldTable of tipping customs in 40 countries: where it is required, where it offends and where it is already on the bill.
• Calendars of the worldThe 12 calendars in use around the world today, with type, where they apply and what year 2026 is in each. In Ethiopia, it is still 2018.
• US ZIP codes by stateEvery US state ranked by number of ZIP codes, with ranges and links to full state profiles. 40,977 codes mapped from open data.
• Alaska ZIP codesAlaska has 273 ZIP codes, from 99501 to 99950. See the cities with the most codes and how the numbering works.
• Alabama ZIP codesAlabama has 811 ZIP codes, from 35004 to 36925. See the cities with the most codes and how the numbering works.
• Arkansas ZIP codesArkansas has 706 ZIP codes, from 71601 to 72959. See the cities with the most codes and how the numbering works.
• Arizona ZIP codesArizona has 530 ZIP codes, from 85001 to 86556. See the cities with the most codes and how the numbering works.
• California ZIP codesCalifornia has 2,593 ZIP codes, from 90001 to 96162. See the cities with the most codes and how the numbering works.
• Colorado ZIP codesColorado has 645 ZIP codes, from 80001 to 81658. See the cities with the most codes and how the numbering works.
• Connecticut ZIP codesConnecticut has 429 ZIP codes, from 06001 to 06927. See the cities with the most codes and how the numbering works.
• District of Columbia ZIP codesDistrict of Columbia has 277 ZIP codes, from 20001 to 56972. See the cities with the most codes and how the numbering works.
• Delaware ZIP codesDelaware has 96 ZIP codes, from 19701 to 19980. See the cities with the most codes and how the numbering works.
• Florida ZIP codesFlorida has 1,473 ZIP codes, from 32003 to 34997. See the cities with the most codes and how the numbering works.
• Georgia ZIP codesGeorgia has 952 ZIP codes, from 30002 to 39901. See the cities with the most codes and how the numbering works.
• Hawaii ZIP codesHawaii has 137 ZIP codes, from 96701 to 96898. See the cities with the most codes and how the numbering works.
• Iowa ZIP codesIowa has 1,055 ZIP codes, from 50001 to 52809. See the cities with the most codes and how the numbering works.
• Idaho ZIP codesIdaho has 320 ZIP codes, from 83201 to 83877. See the cities with the most codes and how the numbering works.
• Illinois ZIP codesIllinois has 1,575 ZIP codes, from 60001 to 62999. See the cities with the most codes and how the numbering works.
• Indiana ZIP codesIndiana has 968 ZIP codes, from 46001 to 47997. See the cities with the most codes and how the numbering works.
• Kansas ZIP codesKansas has 748 ZIP codes, from 66002 to 67954. See the cities with the most codes and how the numbering works.
• Kentucky ZIP codesKentucky has 946 ZIP codes, from 40003 to 42788. See the cities with the most codes and how the numbering works.
• Louisiana ZIP codesLouisiana has 719 ZIP codes, from 70001 to 71497. See the cities with the most codes and how the numbering works.
• Massachusetts ZIP codesMassachusetts has 685 ZIP codes, from 01001 to 05544. See the cities with the most codes and how the numbering works.
• Maryland ZIP codesMaryland has 605 ZIP codes, from 20588 to 21930. See the cities with the most codes and how the numbering works.
• Maine ZIP codesMaine has 485 ZIP codes, from 03901 to 04992. See the cities with the most codes and how the numbering works.
• Michigan ZIP codesMichigan has 1,159 ZIP codes, from 48001 to 49971. See the cities with the most codes and how the numbering works.
• Minnesota ZIP codesMinnesota has 992 ZIP codes, from 55001 to 56763. See the cities with the most codes and how the numbering works.
• Missouri ZIP codesMissouri has 1,157 ZIP codes, from 63005 to 72643. See the cities with the most codes and how the numbering works.
• Mississippi ZIP codesMississippi has 531 ZIP codes, from 38601 to 39776. See the cities with the most codes and how the numbering works.
• Montana ZIP codesMontana has 404 ZIP codes, from 59001 to 59937. See the cities with the most codes and how the numbering works.
• North Carolina ZIP codesNorth Carolina has 1,081 ZIP codes, from 27006 to 28909. See the cities with the most codes and how the numbering works.
• North Dakota ZIP codesNorth Dakota has 407 ZIP codes, from 58001 to 58856. See the cities with the most codes and how the numbering works.
• Nebraska ZIP codesNebraska has 620 ZIP codes, from 68001 to 69367. See the cities with the most codes and how the numbering works.
• New Hampshire ZIP codesNew Hampshire has 281 ZIP codes, from 03031 to 03897. See the cities with the most codes and how the numbering works.
• New Jersey ZIP codesNew Jersey has 723 ZIP codes, from 07001 to 08989. See the cities with the most codes and how the numbering works.
• New Mexico ZIP codesNew Mexico has 427 ZIP codes, from 87001 to 88439. See the cities with the most codes and how the numbering works.
• Nevada ZIP codesNevada has 254 ZIP codes, from 88901 to 89883. See the cities with the most codes and how the numbering works.
• New York ZIP codesNew York has 2,154 ZIP codes, from 00501 to 14905. See the cities with the most codes and how the numbering works.
• Ohio ZIP codesOhio has 1,416 ZIP codes, from 43001 to 45999. See the cities with the most codes and how the numbering works.
• Oklahoma ZIP codesOklahoma has 765 ZIP codes, from 73001 to 74966. See the cities with the most codes and how the numbering works.
• Oregon ZIP codesOregon has 481 ZIP codes, from 97001 to 97920. See the cities with the most codes and how the numbering works.
• Pennsylvania ZIP codesPennsylvania has 2,176 ZIP codes, from 15001 to 19612. See the cities with the most codes and how the numbering works.
• Rhode Island ZIP codesRhode Island has 90 ZIP codes, from 02801 to 02940. See the cities with the most codes and how the numbering works.
• South Carolina ZIP codesSouth Carolina has 534 ZIP codes, from 29001 to 29945. See the cities with the most codes and how the numbering works.
• South Dakota ZIP codesSouth Dakota has 385 ZIP codes, from 57001 to 57799. See the cities with the most codes and how the numbering works.
• Tennessee ZIP codesTennessee has 785 ZIP codes, from 37010 to 38589. See the cities with the most codes and how the numbering works.
• Texas ZIP codesTexas has 2,600 ZIP codes, from 73301 to 88595. See the cities with the most codes and how the numbering works.
• Utah ZIP codesUtah has 347 ZIP codes, from 84001 to 84791. See the cities with the most codes and how the numbering works.
• Virginia ZIP codesVirginia has 1,214 ZIP codes, from 20101 to 24658. See the cities with the most codes and how the numbering works.
• Vermont ZIP codesVermont has 308 ZIP codes, from 05001 to 05907. See the cities with the most codes and how the numbering works.
• Washington ZIP codesWashington has 716 ZIP codes, from 98001 to 99403. See the cities with the most codes and how the numbering works.
• Wisconsin ZIP codesWisconsin has 896 ZIP codes, from 53001 to 54990. See the cities with the most codes and how the numbering works.
• West Virginia ZIP codesWest Virginia has 851 ZIP codes, from 24701 to 26886. See the cities with the most codes and how the numbering works.
• Wyoming ZIP codesWyoming has 195 ZIP codes, from 82001 to 83414. See the cities with the most codes and how the numbering works.
• Formula 1 world championsThe complete list of Formula 1 world champions, season by season, with team, wins and the constructors title. From Farina to Lando Norris.
• Chinese zodiac by yearFind your Chinese zodiac sign and element from your birth year, with the full table from 1924 to 2043 and the Lunar New Year warning (January 21 to February 20).
• Animal gestationTable of gestation for 41 animals in days, from the opossum (~13) to the African elephant (~645), compared with the ~280 human days.
• Average height by countryAverage height of men and women in 42 countries (NCD-RisC data), from the Netherlands at the top to Timor-Leste and Guatemala at the bottom.
• Weird time zonesNepal +5:45, Chatham +12:45, Kiribati +14 (which skipped a day in 1995) and China on a single zone: the strangest time zone cases, sourced from the IANA tzdb.
• Buddhist Era converter (พ.ศ.)Convert Western years to the Thai Buddhist Era (พ.ศ. = year + 543) and back, with a landmark year table and the Sri Lanka, Myanmar, Cambodia and Laos variants.
• Hijri calendar converterConvert dates between the Gregorian and Islamic (tabular Hijri) calendars, see approximate Ramadan and Eid dates from 2024 to 2030 and understand the 354 day lunar year.
• Zakat calculatorCalculate zakat (2.5% of zakatable wealth above the nisab), compare the gold nisab (85 g) with the silver one (595 g) and understand hawl, zakatable assets and school differences.
• World cheese championsThe complete list of World Cheese Awards champions, year by year since 1988, with cheese, producer and country. Gruyère with six titles and every winner verified.
• Bocuse d'Or podiumsGold, silver and bronze from all 20 editions of the Bocuse d'Or, with chef and country, plus the medal table of the France versus Norway duel.
• Best baguette of ParisAll 33 winners of the Grand Prix de la Baguette of Paris, year by year since 1994. The champion supplies the Élysée Palace bread for one year.
• Exoplanets year by yearHow many exoplanets were discovered each year, which method dominated and each season's highlight. 6,319 planets confirmed by NASA.
• Exoplanet recordsThe 15 exoplanets closest to Earth, the smallest and largest ever measured, and years lasting from 2.2 hours to thousands of years.
• How exoplanets are foundTransit, radial velocity, direct imaging, microlensing: every exoplanet detection method explained, with NASA's official discovery scoreboard.
• Biggest earthquakes by yearThe biggest earthquake of every year since 1950, with magnitude, location and the total of recorded M7+ events. 986 events from the USGS catalog in one table.
• The largest earthquakes in historyThe 13 earthquakes of magnitude 8.5 or higher recorded since 1950, from Valdivia (M9.5, the record) to Tohoku, with date, location and context for each.
• Name and birth numerologyCalculate your Destiny and Expression numbers with the Pythagorean table, every step of the math shown. Tradition labeled honestly, everything stays in your browser.
• Sun sign and compatibilityFind the sun sign for two birth dates and the traditional pair reading by element (fire, earth, air, water), with the full table of the 12 tropical signs.
• Birth moon phaseFind the moon phase on the day you were born using the 29.53-day synodic month, validated against documented eclipses, with all 8 phases and their tradition.
• The Nobel Prize year by yearThe complete Nobel Prize table: 125 years and all 6 categories side by side, with the wartime gaps marked. From Röntgen to the 2025 laureates.
• Nobel Prize in PhysicsThe complete Nobel Prize in Physics list, year by year from 1901 to 2025, with country of birth and prize share, plus records and the years with no award.
• Nobel Prize in ChemistryThe complete Nobel Prize in Chemistry list, year by year from 1901 to 2025, with country of birth and prize share, plus records and the years with no award.
• Nobel Prize in MedicineThe complete Nobel Prize in Medicine list, year by year from 1901 to 2025, with country of birth and prize share, plus records and the years with no award.
• Nobel Prize in LiteratureThe complete Nobel Prize in Literature list, year by year from 1901 to 2025, with country of birth and prize share, plus records and the years with no award.
• Nobel Peace PrizeThe complete Nobel Peace Prize list, year by year from 1901 to 2025, with country of birth and prize share, plus records and the years with no award.
• Nobel Prize in Economic SciencesThe complete Nobel Prize in Economic Sciences list, year by year from 1969 to 2025, with country of birth and prize share, plus records and the years with no award.
• Countries with the most holidaysWhich country has the most holidays? Ranking of 166 countries and territories by 2026 nationwide holidays, with each one's most curious date.
• Brazil holidays in 2026Complete Brazil holiday calendar for 2026: 12 nationwide dates with weekday, local and English names, and the built in long weekends.
• United States holidays in 2026Complete United States holiday calendar for 2026: 10 nationwide dates with weekday, local and English names, and the built in long weekends.
• Mexico holidays in 2026Complete Mexico holiday calendar for 2026: 7 nationwide dates with weekday, local and English names, and the built in long weekends.
• Canada holidays in 2026Complete Canada holiday calendar for 2026: 8 nationwide dates with weekday, local and English names, and the built in long weekends.
• Argentina holidays in 2026Complete Argentina holiday calendar for 2026: 16 nationwide dates with weekday, local and English names, and the built in long weekends.
• Chile holidays in 2026Complete Chile holiday calendar for 2026: 16 nationwide dates with weekday, local and English names, and the built in long weekends.
• Colombia holidays in 2026Complete Colombia holiday calendar for 2026: 19 nationwide dates with weekday, local and English names, and the built in long weekends.