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description=A comprehensive calculation website, which aims to provide higher calculation accuracy, ease of use, and fun, contains a wide variety of content such as lunar or nine stars calendar calculation, oblique or area calculation for do-it-yourself, and high precision calculation for the special or probability function utilized in the field of business and research.;

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high precision calculator you are using the new ui beta return to the original ui this page has been automatically translated by machine translation please note that translations may not be entirely accurate high precision calculations for everyday life and work high precision calculations for everyday life and work about how to use examples ranking login register daily life finance health calendar environment unit conversion hobbies practical skills math physics collection of mathematical formulas collection of physics formulas collection of applied calculation problems specialized statistical functions special functions numerical analysis numerical integration linear algebra user formulas my formulas shared life shared math shared science shared engineering shared other free calculator keisan is a calculation portal that brings together formulas for everyday life learning work and hobbies from financial and health calculators to math physics statistics and special functions explore over 1 000 types of calculations find the perfect calculation for you this service is intended for users in japan multilingual support allows people living in japan to use the service in a language they are comfortable with daily life math physics specialized user formulas finance loan calculator accumulation calculation interest calculation pensions and severance pay allowances and benefits tax settlement finance splitting the bill economic calculations money saving cost effective calculations land and buildings foreign exchange finance key performance indicators for restaurants health health checkup calories burned exercise meal alcohol and tobacco obesity calendar special occasions time date and day of the week lunar calendar and calendar notes japanese calendar gregorian calendar world calendar unlucky years and biorhythms environment eco friendly living heating and cooling automobile global warming meteorology earthquake power generation radioactivity unit conversion unit conversion us unit conversions other hobbies practical skills photography shopping travel hobbies information processing tokyo skytree data analysis examples of data analysis applications life in edo web marketing faq view all the display or operation suddenly started acting up i can t print the calculation results properly what is saving and retrieving input values how to copy a table of calculation results how to save a graph image update history view all 2026 10 22 announcement the new ui is now the default display 2026 9 20 announcement we have launched the new ui beta version 2026 7 14 i added a library 2026 4 21 announcement announcement regarding keisan s 18th anniversary and the launch of its official x account 2025 7 29 information regarding ad display bookmarks no bookmarks yet manage bookmarks history no history link banners top privacy policy terms of service faq external data transmission contact cookie settings 2026 ripplex inc 日本語 english 简体中文 繁體中文 한국어 build 0215832 500 2026 10 30 15 05