Time Converter
Convert seconds, minutes, hours, days, weeks and Julian years.
Quick answer
- Formula: Result = Value × (factor of from-unit in seconds) ÷ (factor of to-unit in seconds); 1 year = 365.25 days
- Worked example — Converted duration: 365.250000 (full example below).
Time Converter
| Converted duration | 365.250000 |
| Summary | 1 years = 365.25 days |
One Julian year is 365.25 days, 8766 hours, or 31,557,600 seconds.
Convert durations between seconds, minutes, hours, days, weeks and years. Minutes, hours, days and weeks are exact: 60 seconds, 60 minutes, 24 hours and 7 days.
For the year this converter uses the Julian year of exactly 365.25 days — the astronomical convention that accounts for leap years on average. A calendar year is 365 or 366 days depending on the specific year.
The formula
Worked example
One Julian year is 365.25 days, 8766 hours, or 31,557,600 seconds.
The example is pre-loaded in the result panel — press Calculate with your own numbers to replace it.
Frequently asked questions
Why 365.25 days in a year?
Leap years add a day every four years, so the long-run average (the Julian year) is 365.25 days. The more precise Gregorian average is 365.2425 days.
How many seconds are in a day?
Exactly 86,400 in a standard day (24 × 60 × 60), ignoring the occasional leap second added to UTC.
How many hours are in a week?
168 hours — 7 days × 24 hours. A standard 40-hour work week is about 24% of all the hours in a week.
Category: Unit Conversions calculators
Sources & methodology
This calculator applies the formula shown on this page exactly as written, using the standard definitions for its inputs. Results are computed from the values you enter — no data is stored — and are rounded only for display.
Content last reviewed by CalcHub Editorial.
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