Utility Calculators
Solve everyday queries with our free utility calculators. Determine ages, count calendar durations, and convert between length, weight, and volume units.
Age Calculator
Measure your exact age from date of birth, broken down into years, months, weeks, days, and minutes.
Formula:
Calendar duration subtraction
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Date Duration Calculator
Find the calendar distance and exact day count between any two dates, with inclusive/exclusive toggles.
Formula:
t2 - t1 days conversion
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Unit Converter
Convert lengths (meters, feet), weights (kg, lbs), and volumes (liters, gallons) instantly.
Formula:
SI conversion constants
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Days Left Calculator
Calculate the exact number of days, hours, and minutes remaining until a custom calendar event or target date.
Formula:
t_target - t_now countdown
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Days Until Birthday
Find how many days are left until your next birthday. Discover zodiac alignments and milestone details.
Formula:
Annual target subtraction
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