A week is seven days.
Weeks to Seconds Converter — wk to s
Convert Weeks (wk) to Seconds (s) using the exact conversion factor (1 weeks = 604,800 seconds). See the formula, worked examples, conversion table, unit comparison, history, and common uses.
Weeks to Seconds converter
Converter
Time Converter
Convert SI time, civil time, historical durations, months, and years.
Context values
Some unit families need one extra value for a physically accurate result.
The second is the SI base unit of time.
Result = input x 604800 / 1.
Months and years use the average Gregorian year.
Reserved above the conversion cards and below the converter.
About Converting Weeks to Seconds
Weeks and Seconds are both everyday units of duration, and converting between them is one of the most routine calculations there is — scheduling, project planning, and billing all depend on it. Weeks is most often used for work schedules and calendars worldwide.
Formula
seconds = weeks × 604800
This factor comes from each unit's defined relationship to the category's base unit: 1 weeks equals 604800 base units, and 1 seconds equals 1 base unit, so dividing one by the other gives the direct weeks-to-seconds factor of 604800.
Simple example
1 wk × 604800 = 604,800 s
1 weeks = 604,800 seconds.
Real-world example
24 wk × 604800 = 14,515,200 s
24 weeks = 14,515,200 seconds.
Conversion table
| Weeks (wk) | Seconds (s) |
|---|---|
| 1 wk | 604,800 s |
| 7 wk | 4,233,600 s |
| 24 wk | 14,515,200 s |
| 30 wk | 18,144,000 s |
| 100 wk | 60,480,000 s |
| 365 wk | 220,752,000 s |
Reverse conversion: Seconds to Weeks
1 s × 0.000001653439153 = 0.0000016534 wk
1 seconds = 0.0000016534 weeks.
weeks = seconds × 0.00000165343915344
For a page dedicated to this direction, see Seconds to Weeks.
Weeks vs. Seconds
| Aspect | Weeks | Seconds |
|---|---|---|
| Family | Conventional (non-SI) time unit | SI base unit |
| Typical use | Work schedules and calendars worldwide | Fundamental unit for all timekeeping and scientific measurement |
| Where it's used | Universal | Universal |
Understanding the Weeks
Weeks (wk) measures time. A week is 7 days, a cycle with no astronomical basis, historically linked to religious and market traditions. It is classified as a Conventional (non-SI) time unit.
Where it's used: Universal
Uses of the Weeks today
- Work schedules and calendars worldwide
- Project planning and scheduling
- Pregnancy and medical timelines
History of the Weeks
The seven-day week likely originated in ancient Babylon, possibly tied to the seven visible celestial bodies known to ancient astronomers (Sun, Moon, and five planets), and spread through Judaism, then Christianity and the Roman Empire, into near-universal modern use despite having no basis in astronomical cycles the way the day, month, or year do.
Historical origin. Weeks was not the invention of a single named person; it developed through the process described above.
Understanding the Seconds
Seconds (s) measures time. The second is the SI base unit of time, currently defined via a fixed number of cesium atomic transitions. It is classified as a SI base unit.
Where it's used: Universal
Uses of the Seconds today
- Fundamental unit for all timekeeping and scientific measurement
- Basis for derived units like speed (m/s) and frequency (Hz)
History of the Seconds
The second originated from dividing the day into 24 hours, each into 60 minutes, each into 60 seconds — a sexagesimal (base-60) system inherited from Babylonian astronomy. Since 1967, the second has been defined atomically, as exactly 9,192,631,770 periods of radiation from a cesium-133 transition, decoupling timekeeping from the Earth's slightly irregular rotation.
Historical origin. Seconds was not the invention of a single named person; it developed through the process described above.
Weeks — sources
- ISO 8601 — International standard for date/time representation, defines the 7-day week.
Seconds — sources
- BIPM — The second (SI base unit) — Current atomic definition and history of the second.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many seconds are in 1 weeks?
1 weeks equals 604,800 seconds, using the exact defined conversion factor rather than an estimate.
How do I convert weeks to seconds?
Multiply the weeks value by 604800. The converter above does this instantly to whatever precision you set.
How do I convert seconds back to weeks?
Use the reverse factor: 1 seconds equals 0.0000016534 weeks. You can also use the swap control in the converter above to flip the direction instantly.
What is a weeks?
Weeks (wk) measures time. A week is 7 days, a cycle with no astronomical basis, historically linked to religious and market traditions. It is classified as a Conventional (non-SI) time unit.
What is a seconds?
Seconds (s) measures time. The second is the SI base unit of time, currently defined via a fixed number of cesium atomic transitions. It is classified as a SI base unit.
Is the weeks to seconds conversion exact?
Yes. Both weeks and seconds are defined by fixed standards rather than physical artifacts, so the factor of 604800 used above is exact to as many digits as you choose to display.
Where is the weeks still used today?
Universal