Convert weeks to days

1. How to convert weeks to days

The conversion is a single multiplication: d = wk × 7. Both units are defined against the same base — the second (s) — so the factor is fixed and the result is exact to the precision shown.

Worked at the two values people ask for most: 1 wk = 7 d and 2 wk = 14 d. Going the other way, wk = d × 0.142857142857, so 1 d = 0.14285714 wk.

Results are given to eight significant figures. That is more precision than most jobs need — for a rough figure, use 1 wk = 7 d and adjust — but rounding early and multiplying afterwards is how a small error becomes a visible one, so the full figure is what the converter carries.

2. Weeks to Days conversion table

Every row is the same factor applied — nothing in the table is a special case, and any value in between behaves the same way. Type your own figure into the converter above and the Formula tile shows the arithmetic being used, so the result is checkable rather than taken on trust.

3. What the two units are

• Weeks (wk). One wk is 604,800 s.
• Days (d). One d is 86,400 s.

Both are converted through the second (s): the value is multiplied by its own unit's factor to reach the base, then divided by the target unit's factor to leave it. No direct weeks to days factor has to exist or be kept correct, which is also why the converter can show the same value in all 9 time units at once.

Seconds, minutes, hours, days and weeks are exact. Months and years are not — the table uses the Gregorian averages of 30.436875 and 365.2425 days, and no real calendar month is that length. For anything involving actual dates use the date calculator, which counts real days including leap days.

If the pair you actually want is not this one, the full unit converter runs every 9 time units off the same factor table, along with 11 other categories of measurement.