What this weeks to days converter does
This tool converts a number of weeks into days by multiplying by 7 — the fixed number of days in a calendar week. Type a value and the result appears instantly, along with the same span expressed in hours and minutes. Press Swap to flip it into a days-to-weeks converter using your current result as the new starting value.
It's built for quick planning math: turning a project estimate given in weeks into a day count, or checking how many weeks a stretch of days actually covers.
How to use it
One field, one swap button — the result is always live.
- Enter a number of weeks.Whole numbers and decimals both work, for example 2 or 2.5.
- Read the result in days.The total appears instantly, alongside the same span in hours and minutes.
- Swap direction if you need days to weeks instead.The current result becomes the new input, and the labels flip to match.
- Copy, print, or download.Reuse the result as text, a printed page, or a CSV row.
How the conversion works
A week is always 7 days, so converting weeks to days is a single multiplication — and converting days back to weeks is the same operation in reverse, dividing by 7.
7 = 14 days14 days × 24 = 336 hours
14 days × 1,440 = 20,160 minutes
Converting the other way
To turn days back into weeks, divide by 7: 21 days ÷ 7 = 3 weeks. When the days don't divide evenly, the result is a decimal — 10 days ÷ 7 = 1.43 weeks. The days to weeks converter defaults to this direction if that's what you need most often.
Quick examples
Common conversions, worked out and double-checked.
| Value | From | To | Result |
|---|---|---|---|
| 1 | Week | Days | 7 |
| 2 | Weeks | Days | 14 |
| 0.5 | Week | Days | 3.5 |
| 3 | Weeks | Days | 21 |
| 52 | Weeks | Days | 364 |
| 10 | Days | Weeks | 1.43 |
| 365 | Days | Weeks | 52.14 |
Need the same value in hours or minutes instead? The general-purpose time unit converter handles any pair of units on one page.
Who uses it, and for what
- Project planners turning a "6-week sprint" estimate into a day count for a calendar or Gantt chart.
- Students & researchers converting a study or trial length given in weeks into days for scheduling.
- Parents & expecting parents converting a pregnancy or milestone stated in weeks into a day count.
- Anyone comparing durations quoted inconsistently — one source in weeks, another in days.
Note that this converter uses fixed 7-day weeks, not working weeks. If you need weekdays only, excluding weekends and holidays, the business days calculator is the right tool instead.
Frequently asked questions
How many days are in a week?
There are exactly 7 days in a week. This is a fixed calendar convention and never changes.
How do I convert weeks to days?
Multiply the number of weeks by 7. For example, 2 weeks × 7 = 14 days. This converter does that instantly as you type.
How do I convert days back to weeks?
Divide the number of days by 7. For example, 21 days ÷ 7 = 3 weeks. You can also press Swap on this page to flip it into a days-to-weeks converter.
Can I convert a fractional number of weeks?
Yes. Decimals work normally — 1.5 weeks converts to 10.5 days, for instance.
What's the difference between this and the days to weeks converter?
They use the same math in opposite directions. This page defaults to weeks-to-days; the days to weeks converter defaults the other way. Both let you swap direction on the page itself.
Does it handle large numbers, like a year's worth of weeks?
Yes. For example, 52 weeks converts to 364 days without any loss of precision.
Is the converter free and private?
It is completely free with no sign-up. The calculation runs entirely in your browser — your input is never uploaded or stored on a server.
Accuracy & sources
Results come from standard time arithmetic: weeks are multiplied by 7 to get days, and days are divided by 7 to get weeks, exactly as shown in how the conversion works. There is no rounding beyond normal display precision, and every worked example on this page has been independently verified by hand.
The 7-day week is a calendar convention rather than a physical measurement standard, so no metrological body governs it — there's no external authority to cite here, just the arithmetic shown above. Written and reviewed by Fletcher Langley, and re-checked whenever the tool changes — last reviewed August 2026.
About the author
Operations and workforce-systems specialist with 14+ years inside shift-based industries and payroll platforms, and a BS in Industrial Engineering. Fletcher writes and reviews the calculators, converters, and guides here — from overnight-shift math to decimal payroll hours — drawing on years spent translating between 12-hour, 24-hour, and military time for real timesheets.
Written & reviewed by Fletcher Langley · Last updated: August 2026