How to Convert Weeks to Days (wk to d)
Time conversions help with project planning, payroll hours and working out how long a loan or COE period really is. This guide shows how to convert weeks into days by hand, with examples and a quick-reference table.
The conversion
To convert weeks to days, multiply the value by 7. To go the other way, divide by the same number (or multiply by 0.1428571429). For a quick estimate, multiply by about 7.
Days = weeks × 7
Worked examples
- 3 wk = 21 d
- 12.5 wk = 87.5 d
- 75 wk = 525 d
Weeks to Days table
| Weeks | Days |
|---|---|
| 1 wk | 7 d |
| 2 wk | 14 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 |
Common questions
Is wk to d exact?
The factors used here are the internationally defined values where they exist; results are rounded for display only.
How do I convert back?
Use the Days to Weeks converter.
Mistakes to avoid
Mixing similar-sounding units
US and imperial gallons, pints and tons are different sizes, and decimal kilobytes differ from binary kibibytes.
Multiplying when you should divide
Converting to a smaller unit gives a bigger number, and converting to a larger unit gives a smaller one. If your answer moves the wrong way, you have inverted the factor.
Rounding the factor too early
Using 3 instead of 3.28 for feet per metre introduces an error of almost 9% before you have started.
Background
Many conversion factors are exact by definition. The inch has been defined as exactly 2.54 centimetres since 1959, and the pound as exactly 0.45359237 kilograms, so conversions involving them can be as precise as you need.
Unit conversion is simply multiplication by a fixed ratio. The ratio between two units of the same quantity never changes, so once you know it you can convert any value in either direction.
Singapore adopted the metric system in the 1970s, replacing imperial units and traditional Chinese measures in most official uses. Metric units are now standard in schools, trade and government, but older units survive in property, markets and imported goods.
For any value, use the Weeks to Days Converter or browse all time converters.
Run your own numbers: Weeks to Days Converter