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📅 Date & Time · 11 Tools

Date & Time Tools

Free calculators for age, date differences, countdowns, timers, and time zones

Time is the one resource you can't buy more of — which makes measuring it precisely more important than ever. Whether you need to calculate the exact number of business days before a project deadline, figure out how old you'll be on a future date, count down to an important event, or convert between global time zones for a meeting, these tools handle it instantly.

MODOO HUB's 11 date and time tools cover everything from everyday calculations to specialized needs. The Business Days Calculator skips weekends to give you a true working-day count. The Timestamp Converter translates Unix epoch values to human-readable dates for developers. The Korean Age Calculator handles the unique Korean age counting system used in official and social contexts in Korea.

All tools run in your browser with no server calls — calculations are instant, accurate, and private.

All 11 Date & Time Tools
🎂
Age Calculator
Exact age in years, months, and days
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📅
Date Calculator
Days between dates or add/subtract days
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⏱️
Time Calculator
Add, subtract, and convert time durations
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📅
Business Days Calculator
Count working days between two dates
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⏳
Countdown Timer
Live countdown to any future date or event
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🍅
Pomodoro Timer
25/5 focus cycles with audio notifications
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🕑
Timestamp Converter
Unix epoch ↔ human-readable date/time
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🌐
Timezone Converter
Convert time across any world time zones
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🗓️
D-Day Calculator
Days since or until a specific date
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🎂
Korean Age Calculator
Korean age system (만 나이 / 한국 나이)
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📅
Working Days Calculator
Working days within a date range
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Frequently Asked Questions
How does the Age Calculator handle different calendar systems?▼
The Age Calculator uses the Gregorian calendar and calculates exact years, months, and days. The Korean Age Calculator separately follows the Korean system where everyone gains a year on January 1st, regardless of their birthday.
What counts as a business day?▼
The Business Days Calculator excludes weekends (Saturday and Sunday). It does not automatically exclude public holidays, so add your country's specific holidays manually as needed.
What is the Pomodoro Technique?▼
The Pomodoro Technique is a time-management method: work for 25 minutes, take a 5-minute break, repeat 4 cycles, then take a longer break. Our Pomodoro Timer automates this cycle with audio notifications to keep you on track.
How do I convert a Unix timestamp to a readable date?▼
Use the Timestamp Converter — paste any Unix timestamp in seconds or milliseconds and it instantly shows the equivalent human-readable date and time in your local timezone and UTC.
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