Time Converter
Free online Time Converter to convert between seconds, minutes, hours, days, weeks, and years.
Share on Social Media:
The Time Converter instantly converts between seconds, minutes, hours, days, weeks, and years. From a programming duration in seconds to a project timeline in weeks, it gives you the exact equivalent in one click — decimals and all.
One Tool for Every Time Unit
Time is simple to live by but fiddly to convert, because the factors aren't tidy powers of ten: 60 seconds to a minute, 60 minutes to an hour, 24 hours to a day. Chaining those by hand invites mistakes. This converter does the multiplication for you, so any unit translates to any other instantly and exactly.
How to Convert
- Enter the time value.
- Choose the from and to units.
- Read the converted result instantly.
Time Conversions Worth Knowing
| Span | Equals |
|---|---|
| 1 minute | 60 seconds |
| 1 hour | 3,600 seconds |
| 1 day | 86,400 seconds |
| 1 week | 168 hours |
| 1 year | 365 days (8,760 hours) |
The Leap-Year Caveat
Conversions involving years carry one subtlety. A calendar year is 365 days, but the Earth actually takes about 365.25 days to orbit the Sun — which is why we add a leap day every four years. The converter uses 365 days for a year unless noted, so over very long spans the result can differ from a leap-aware count by a day or more. For most planning, 365 is exactly what you want.
Built for Decimals
Real-world time is rarely whole. Time tracking, billing, and scheduling deal in fractions — 1.75 hours, 0.5 days, half a week. The converter handles decimals precisely, so you can bill 2.25 hours as 135 minutes or plan in quarter-days without manual arithmetic.
Who Uses a Time Converter
- Project managers translating estimates between units.
- Freelancers converting tracked time for billing.
- Developers handling timestamps and durations.
- Students and scientists in rate and physics problems.
Accurate and Free
The converter uses exact factors at full precision, all in your browser. Convert as often as you need, free.
Frequently Asked Questions
How many seconds are in a day?
There are 86,400 seconds in a day (24 hours × 60 minutes × 60 seconds). This figure comes up often in programming, science, and rate calculations, and the converter computes it for any number of days instantly.
How do I convert hours to minutes?
Multiply the number of hours by 60. For example, 2.5 hours is 150 minutes. The converter handles decimals, so partial hours convert cleanly without manual fractions.
How many hours are in a week?
A week contains 168 hours (7 days × 24 hours). Knowing this helps with scheduling, time budgeting, and understanding how much of a week a recurring commitment actually consumes.
Why might year conversions vary slightly?
A calendar year is 365 days, but the astronomical year is about 365.25 days, which is why we add a leap day every four years. Conversions involving years use 365 days unless otherwise noted, so very long spans can differ by a day or more.
Can it handle decimals?
Yes. Enter values like 1.75 hours or 0.5 days and the converter returns precise results, which is useful for time tracking and billing where fractions matter.
What is this useful for?
Project planning, time tracking and billing, scientific calculations, programming (converting timestamps and durations), and everyday questions like how many minutes are in a workday.
Is the conversion accurate?
Yes. It uses exact factors at full precision, so even large conversions between seconds and years stay reliable.
Is this tool free?
Yes — free, instant, and unlimited, with no signup.