How many days are in a week?

Exactly 7 days. So to convert weeks to days you multiply by 7 — for example, 3 weeks = 21 days.

How many days is 6 weeks?

6 × 7 = 42 days. Likewise 2 weeks is 14 days, 4 weeks is 28 days, and 12 weeks is 84 days.

Can I convert days back to weeks?

Yes. Press the Swap button and the tool divides by 7 instead, turning days into weeks (including fractional weeks).

Can I enter a fraction of a week?

Yes. Decimals work both ways — 2.5 weeks converts to 17.5 days, and 10 days converts to about 1.43 weeks.

How many days is 9 months of pregnancy in weeks?

Pregnancy is usually measured in weeks rather than months. Full term is around 40 weeks, which is 40 × 7 = 280 days.

Is a week always 7 days?

Yes, in every modern calendar a week is a fixed 7 days, so the conversion is exact and never varies by month or year — unlike months, which differ in length.

Is my input uploaded anywhere?

No — the conversion runs entirely in your browser and nothing is sent over the network.

Weeks to Days Converter

Weeks to days

This converter turns any number of weeks into days, and back again, using the exact and unchanging rule that 1 week = 7 days. It is useful for planning notice periods, sprint lengths, pregnancy milestones, or any schedule quoted in weeks that you need to express in days.

How it works

Converting weeks to days simply multiplies by 7:

days = weeks × 7

Press Swap and the tool divides instead, turning days back into weeks (including fractional results):

weeks = days ÷ 7

Because a week is always exactly seven days, the conversion is precise with no rounding or calendar quirks. Type a value and the result updates instantly.

Weeks	Days
1	7
2	14
4	28
6	42
12	84

Example

To find how many days are in 3.5 weeks, multiply 3.5 × 7 = 24.5 days. Going the other way, 100 days ÷ 7 ≈ 14.29 weeks.

Everything is calculated locally in your browser — nothing is uploaded.