Convert weeks to days
Convert weeks to days instantly. 1 wk = 7 d. Formula, worked examples and a quick reference table.
Last updated
One week equals 7 days. To convert any number of weeks to days, multiply by 7.
The converter above works in both directions and updates as you type. Below you will find the formula, a worked example and a reference table of common values.
Time conversions are exact down to the day and approximate above it. Seconds, minutes, hours and days have fixed ratios, but a month has no fixed length and a year has two — 365 days in the calendar and 365.25 in the astronomical convention used here. For anything with legal or contractual weight, count the actual calendar dates rather than converting a duration, because the difference accumulates precisely where it is least welcome.
weeks to days formula
To go the other way, use week = day ÷ 7.
About these units
The seven-day week has no astronomical basis at all. It is the one unit of time inherited purely by cultural continuity, and it is remarkably consistent worldwide.
A day is exactly 86,400 seconds by convention, though the Earth’s actual rotation drifts slightly against it — the discrepancy leap seconds were introduced to absorb.
Week is also written weeks and wks. Day is also written days.
Sources
weeks to days conversion table
| Week | Day |
|---|---|
| 1 wk | 7 d |
| 2 wk | 14 d |
| 3 wk | 21 d |
| 5 wk | 35 d |
| 10 wk | 70 d |
| 20 wk | 140 d |
| 25 wk | 175 d |
| 50 wk | 350 d |
| 100 wk | 700 d |
| 250 wk | 1,750 d |
| 500 wk | 3,500 d |
| 1,000 wk | 7,000 d |
Frequently asked questions
How many days are in a week? +
There are 7 days in one week.
What is 10 wk in d? +
10 wk equals 70 d. Multiply 10 by 7.
How do I convert day back to week? +
Use week = day ÷ 7. The converter above handles both directions, or see our dedicated days to weeks page.
How accurate is this week to day conversion? +
The factor used is 7, carried at full double precision. Where a unit has an exact legal definition the factor is exact rather than approximate. Rounding is applied only to the displayed result, so the answer is never a calculation done on an already-rounded number.
Is there a quick way to estimate wk to d in my head? +
Multiply by 7. That matches the true factor of 7 exactly, so no adjustment is needed for a mental estimate.