Date & Time Calculators
Calculate ages, deadlines, durations, countdowns, dates, and time windows. Use simple, modern calculators designed for fast answers, clear results, and mobile-friendly browsing.
Available tools
Date & Time calculator list
Choose a tool below. Live tools are ready to use, while planned tools are part of the next build list.
Age Calculator
Calculate exact age, birthday countdown, total days lived, zodiac signs, life milestones, planet ages, and time-lived stats.
Days Between Dates
Find days, weekdays, weekends, weeks, months, years, and date duration.
Time Percentage Calculator
Calculate time percentages, elapsed progress, remaining time, workday utilization, and time from a percentage.
Timecode to Frames Calculator
Convert SMPTE timecode to total frames and frames back to timecode with FPS presets, custom frame rate, IN/OUT duration, formula, examples, and copy buttons.
Grow A Garden Pet Age Calculator
Calculate Grow A Garden pet age, growth stages, milestones, and progress from hatch date.
Dating Age Calculator
Calculate dating age range, age gap, minimum and maximum recommended dating age, and relationship age differences.
Leap Year Calculator
Check if any year is a leap year, find February 29, previous leap year, next leap year, and year length.
Farmers Carry by Age Calculator
Estimate farmers carry weight by age, body weight, gender, training level, distance, and grip category.
Frost Date Calculator by ZIP Code
Estimate last spring frost, first fall frost, growing season length, and planting window by US ZIP code.
Every Second Calculator
Watch live counters show what happens every second on Earth — births, deaths, Google searches, lightning strikes, emails, money, and more. Enter any time window.
Cooking Time Adjustment Calculator
Adjust cooking time for a new oven temperature, convection conversion, or high altitude using the standard inverse temperature-time formula.
Pluto Time Calculator
Find your morning and evening Pluto Time with date, coordinates and UTC offset. Compare local Earth twilight with the light of noon on Pluto.
Blue Prince Date Calculator
Convert Blue Prince run days into in-game dates, weekdays and safe timing, with reverse date lookup and a spoiler-light calendar planner.
Boneless Leg Of Lamb Cooking Time Calculator
Calculate boneless leg of lamb roasting time, pull temperature and rest time by weight and doneness, with a serving planner and food safety notes.
Subtract Time Calculator
Subtract one time duration from another, or subtract a duration from a clock time to find an earlier time, using the correct hours-minutes-seconds borrowing method.
Time Card Calculator
Total weekly hours from daily start times, end times, and breaks, with rounding options, FLSA overtime split after 40 hours, and optional pay calculation.
Time to Decimal Calculator
Convert hh:mm:ss to decimal hours, minutes, or seconds, reverse decimal back into time, or add up a full timesheet of entries.
Time Duration Calculator
Calculate the exact duration between two clock times or two full dates and times, including overnight spans, with a full breakdown.
Reverse Time Calculator
Convert a rate from one time unit into the equivalent rate for every other unit, from per year down to per second, useful for salaries, traffic, and subscription pricing.
Sidereal Time Calculator
Calculate Greenwich and local mean sidereal time for any date, time, and longitude, with the Julian date shown for reference.
Palindrome Date Finder
Check any date for palindrome symmetry, find upcoming palindrome dates, or list every one in a range, across MMDDYYYY, DDMMYYYY, and YYYYMMDD formats.
Business Days Calculator
Count business days between two dates or add/subtract business days from a date, with 5-day or 6-day workweek options and automatic US federal holiday exclusion.
Minute Calculator
Convert any duration into minutes or minutes into any other time unit, and add up to five time durations together, with the base-60 conversion math handled automatically.
Korean Age Calculator
Calculate Korean age, year age, and international age all at once, including which system South Korean law actually uses since the 2023 reform.
About this category
Why use CalcMora date & time calculators?
CalcMora tools are designed to be quick and easy for everyday users. Each calculator focuses on clear inputs, instant results, mobile-friendly cards, and helpful descriptions so you understand the answer, not just the number.
Questions
Date & Time calculators FAQ
Are these date & time calculators free?
Yes. CalcMora calculators are free to use and built for fast, simple estimates.
Can I use these calculators on mobile?
Yes. Category pages and calculator pages are designed to work well on phones, tablets, and desktop screens.
Are the results professional advice?
No. The calculators are for general information and quick estimates. For important financial, medical, legal, or technical decisions, check with a qualified professional.