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Time Unit Converter

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

Our free Time Unit Converter lets you convert between seconds, minutes, hours, days, weeks, months, and years. It is built for travelers, cooks, students, scientists, and anyone working across measurement systems who need fast, reliable results without installing software or creating an account.

Time Unit Converter runs entirely in your browser on CalculatorsPlus — enter your values, get instant results, and copy or share your output in one click. Your data never leaves your device; we do not store inputs on any server.

Switching between metric and imperial units is a daily need worldwide. The time unit converter uses standard conversion factors so you get consistent results for recipes, travel, homework, and technical specifications.

Results update in real time as you change inputs, so you can explore "what if" scenarios — adjust one variable at a time to see how it affects the outcome before committing to a purchase, plan, or decision.

This page includes step-by-step instructions, frequently asked questions, and practical tips below the calculator. Bookmark it for repeat use — many unit conversion tasks come up weekly during projects, studies, or financial planning.

Common Uses

  • Convert recipe measurements between US and metric units
  • Translate specs for international projects or products
  • Science and engineering homework unit checks
  • Travel, fitness, and weather temperature conversions

How to Use the Time Unit Converter

  1. 1

    Select time unit

    Choose seconds, minutes, hours, days, weeks, or years.

  2. 2

    Enter duration

    Input the time value to convert.

  3. 3

    Read result

    View equivalent in the target unit.

💡 Tips & Tricks

  • For billing and SLA math, use hours or seconds — not months.
  • Leap seconds are ignored in everyday conversion.
  • 1 year ≈ 31.5 million seconds for order-of-magnitude checks.

Frequently Asked Questions

How many seconds in a day?
1 day = 86,400 seconds (24 × 60 × 60). 1 week = 604,800 seconds.
How many days in a year?
A common year has 365 days; a leap year has 366. Average tropical year ≈ 365.242 days.
How do I convert hours to days?
Divide hours by 24. Example: 48 hours = 2 days. 1 hour = 3,600 seconds.
Are months exact in time conversion?
Months vary (28–31 days). For precise work, use days or seconds. Approximate: 1 month ≈ 30.44 days average.