Number Tools & Converters

The Number Tools & Converters tradition has 14 calculators. Call any of them at POST /api/v1/calculator/{tool_id} using the tool id shown in each row. The authoritative live list is at GET /api/v1/plugin/calculators.

• Age Calculator age_calculator: Calculates exact age in years, months and days as of a given date (defaults to today), plus total days lived and a Life Path-style number from the birth date.
• Cross-System Letter Value Comparator cross_system_letter_value_comparator: Compares a word's numerical value across the Pythagorean, Chaldean and Arabic Abjad letter-value systems side by side.
• Date Difference Calculator date_difference_calculator: Calculates the difference between two dates in years, months, days, total days and weeks, with the digital root of the total days.
• Day of Week Finder day_of_week_finder: Finds the day of the week for any date, with its classical planetary ruler and a digital root from the date.
• Digital Root Steps Calculator digital_root_steps_calculator: Shows the step-by-step digit-sum reduction of a number down to its single-digit digital root.
• Hijri Date Converter hijri_gregorian_converter: Converts a Gregorian date to its approximate Hijri (Islamic) calendar date using the tabular Islamic calendar algorithm. May differ by a day or two from moon-sighting based calendars.
• Julian Day Number Calculator julian_day_number_calculator: Calculates the Julian Day Number (JDN) for a Gregorian calendar date, with its digital root.
• Magic Square Generator magic_square_generator: Generates an odd-order (3-9) magic square using the Siamese method, with its magic constant and digital root.
• Number Base Converter number_base_converter: Converts a number between binary, octal, decimal, hexadecimal or any base from 2 to 36, with its decimal value and digital root.
• Number to Words Converter number_to_words_converter: Converts a whole number (0 to 999,999,999,999) into English words, with its digital root.
• Prime Factorization Calculator prime_factorization_calculator: Finds the prime factorization of an integer (2 to 10^12), with its digital root.
• Roman Numeral Converter roman_numeral_converter: Converts a number (1-3999) to Roman numerals, or a Roman numeral back to a number, with its digital root.
• Text to Binary Converter text_to_binary_converter: Converts text to its binary (UTF-8 byte) representation, with byte and bit counts and a digital root.
• Unicode Code Point Sum Calculator unicode_code_point_sum: Sums the Unicode code points of every non-space character in a text, with a per-character breakdown and digital root.