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Time Converter

Convert seconds, minutes, hours, days, weeks and Julian years.

By CalcHub Editorial · Last reviewed

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

Worked example result
Converted duration365.250000
Summary1 years = 365.25 days

One Julian year is 365.25 days, 8766 hours, or 31,557,600 seconds.

Diagram: how the Time Converter works — you enter Duration, From, To; it applies the formula Result = Value × (factor of from-unit in seconds) ÷ (factor of to-u…; and the worked example gives Converted duration: 365.250000.
How the Time Converter works — the inputs, the formula, and a worked example (Converted duration: 365.250000).

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

Result = Value × (factor of from-unit in seconds) ÷ (factor of to-unit in seconds); 1 year = 365.25 days

Worked example

One Julian year is 365.25 days, 8766 hours, or 31,557,600 seconds.

Worked example for the Time Converter: with Duration 1, From Years (Julian, 365.25 d), To Days, the result is Converted duration: 365.250000; Summary: 1 years = 365.25 days.
The worked example, with the example values entered and the results they give.

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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