Time Converter

Convert seconds, minutes, hours, days, weeks, months, and years

💡 Tip: Press Ctrl+D for dark mode, Ctrl+K to focus converter

⏰ Time Converter

Convert between seconds, minutes, hours, days, weeks, months, and years

💡 Quick Tip: 1 day = 24 hours = 1,440 minutes = 86,400 seconds
1 Hour = 60 Minutes

Time Conversion Guide

Common Time Conversions

From To Multiply By Example
Seconds Minutes ÷ 60 120 s = 2 min
Minutes Seconds × 60 1 min = 60 s
Minutes Hours ÷ 60 120 min = 2 h
Hours Minutes × 60 1 h = 60 min
Hours Days ÷ 24 48 h = 2 days
Days Hours × 24 1 day = 24 h
Days Weeks ÷ 7 14 days = 2 weeks
Weeks Days × 7 1 week = 7 days
Months Days × 30 (avg) 1 month ≈ 30 days
Years Days × 365 1 year = 365 days

Understanding Time Units

Base Units

Second (s) - The SI base unit of time. Defined by atomic transitions in cesium-133 atoms. Used universally in science.

Minute (min) - 60 seconds. Derived from ancient Babylonian mathematics (base-60 counting system).

Hour (h) - 60 minutes or 3,600 seconds. The standard unit for measuring parts of a day.

Calendar Units

Day - 24 hours or 1,440 minutes or 86,400 seconds. Based on Earth's rotation period.

Week - 7 days. A cultural/religious unit used worldwide but not based on astronomical cycles.

Month - Approximately 30 days (ranges from 28-31). Based on the Moon's orbit around Earth (~29.5 days).

Year - 365 days (365.25 accounting for leap years). Based on Earth's orbit around the Sun.

Important Time Facts

  • ⏱️ 1 Minute = 60 seconds
  • ⏰ 1 Hour = 60 minutes = 3,600 seconds
  • 📅 1 Day = 24 hours = 1,440 minutes = 86,400 seconds
  • 📆 1 Week = 7 days = 168 hours = 10,080 minutes
  • 🗓️ 1 Month (average) = 30 days = 720 hours = 43,200 minutes
  • 📖 1 Year = 365 days = 8,760 hours = 525,600 minutes
  • 🎂 1 Leap Year = 366 days = 8,784 hours
  • 🔟 1 Decade = 10 years ≈ 3,650 days
  • 💯 1 Century = 100 years ≈ 36,500 days

Practical Time Examples

  • ☕ Coffee Break: 15 minutes = 900 seconds
  • 🎬 Average Movie: 2 hours = 120 minutes = 7,200 seconds
  • ✈️ New York to London Flight: 7 hours = 420 minutes
  • 💼 Work Week: 40 hours = 2,400 minutes
  • 🏃 Marathon World Record: ~2 hours = ~7,200 seconds
  • 🌙 Lunar Month: 29.5 days = 708 hours
  • 🌍 Earth's Rotation: 23h 56m 4s (not exactly 24h!)
  • 🎓 University Semester: ~15 weeks = ~105 days
  • 👶 Human Pregnancy: ~280 days = ~40 weeks = ~9 months

Time Conversion Formulas

Seconds to Minutes:

minutes = seconds ÷ 60

Minutes to Hours:

hours = minutes ÷ 60

Hours to Days:

days = hours ÷ 24

Days to Weeks:

weeks = days ÷ 7

Days to Years:

years = days ÷ 365
(or ÷ 365.25 for average including leap years)

Why Different Time Units?

Different time units evolved for different purposes:

  • ⚛️ Second: Scientific standard, based on atomic physics
  • ⏰ Minute/Hour: Convenient divisions for daily scheduling
  • 🌍 Day: Based on Earth's rotation (sunrise to sunrise)
  • 📆 Week: Cultural/religious significance (7-day cycle)
  • 🌙 Month: Originally based on lunar cycles
  • ☀️ Year: Based on Earth's orbit around the Sun

Calendar Quirks & Fun Facts

  • 📅 Leap Years: Every 4 years we add Feb 29 (except years divisible by 100 but not 400)
  • 🗓️ Month Lengths: 28-31 days (January, March, May, July, August, October, December have 31)
  • ⏰ Daylight Saving: Some regions add/subtract 1 hour twice per year
  • 🌍 Time Zones: Earth divided into 24 time zones (1 hour apart)
  • ⏱️ Leap Seconds: Occasionally added to UTC to account for Earth's slowing rotation
  • 🎂 Birthday Paradox: In a room of 23 people, 50% chance 2 share a birthday!

Quick Mental Math Tips

Days to Hours:

  • Multiply days by 24 → Example: 3 days × 24 = 72 hours ✓

Hours to Minutes:

  • Multiply hours by 60 → Example: 2.5 hours × 60 = 150 minutes ✓

Minutes to Seconds:

  • Multiply minutes by 60 → Example: 5 minutes × 60 = 300 seconds ✓

Weeks to Days:

  • Multiply weeks by 7 → Example: 2 weeks × 7 = 14 days ✓

Time in Different Contexts

Work & Productivity:

  • 🏢 Standard work year: ~2,080 hours (40 hrs/week × 52 weeks)
  • 💼 Full-time employment: 40 hours/week = 2,400 minutes/week
  • 📊 Quarter (business): 13 weeks ≈ 91 days

Education:

  • 🎓 School year: ~180 days = ~1,080 hours of instruction
  • 📚 College credit hour: ~15 hours of class per week per semester
  • 🏫 Academic semester: 15-18 weeks

Nature & Science:

  • 🌍 Earth's rotation: 23h 56m 4s (sidereal day)
  • 🌙 Lunar orbit: 27.3 days (sidereal month)
  • ☀️ Solar year: 365.2422 days (tropical year)
  • ⚛️ Atomic second: 9,192,631,770 cesium-133 oscillations

Frequently Asked Questions

How do I convert seconds to minutes?

Divide the number of seconds by 60. For example, 300 seconds ÷ 60 = 5 minutes. This is because there are exactly 60 seconds in one minute.

How many seconds are in a day?

There are 86,400 seconds in one day. This is calculated as: 24 hours × 60 minutes × 60 seconds = 86,400 seconds.

How do I convert hours to days?

Divide hours by 24. For example, 72 hours ÷ 24 = 3 days. This works because a day is defined as 24 hours.

How many hours are in a week?

There are 168 hours in one week. This is calculated as: 7 days × 24 hours = 168 hours.

Why do months have different numbers of days?

The varying month lengths (28-31 days) come from the Roman calendar system. Julius Caesar and Augustus Caesar both wanted months named after them to have 31 days, leading to our irregular calendar.

What is a leap year and why do we have them?

A leap year has 366 days (adding Feb 29). We need them because Earth's orbit takes 365.25 days, not exactly 365. Adding an extra day every 4 years keeps our calendar aligned with Earth's orbit around the Sun.

How accurate is this time converter?

Our converter uses exact conversion factors for standard time units and is accurate up to 10 decimal places. Note: months are calculated as 30 days (average) and years as 365 days (standard year).

Quick Reference Chart

1 Second equals:

  • 0.0166667 minutes
  • 0.000277778 hours
  • 0.0000115741 days

1 Minute equals:

  • 60 seconds
  • 0.0166667 hours
  • 0.000694444 days

1 Hour equals:

  • 60 minutes
  • 3,600 seconds
  • 0.0416667 days

1 Day equals:

  • 24 hours
  • 1,440 minutes
  • 86,400 seconds
  • 0.142857 weeks

1 Week equals:

  • 7 days
  • 168 hours
  • 10,080 minutes
  • 604,800 seconds

1 Year (365 days) equals:

  • 365 days
  • 52.14 weeks
  • 8,760 hours
  • 525,600 minutes
  • 31,536,000 seconds