Weeks to seconds

seconds = weeks × 604,800

How to convert weeks to seconds

One week is 604,800 seconds, so multiply the number of weeks by 604,800. For example, 20 weeks is 20 × 604,800 = 12,096,000 seconds. To go back, divide by the same number, or multiply by 0.00000165.

Quick estimate

Multiplying by about 600000 gets within 0.8% of the exact answer, which is enough to check that a result makes sense.

Where it comes up

Time conversions come up in planning and scheduling, timesheets and pay, project estimates and working out ages or durations.

weeks	seconds
1 wk	604,800 s
2 wk	1,209,600 s
3 wk	1,814,400 s
4 wk	2,419,200 s
5 wk	3,024,000 s
6 wk	3,628,800 s
7 wk	4,233,600 s
8 wk	4,838,400 s
9 wk	5,443,200 s
10 wk	6,048,000 s
11 wk	6,652,800 s
12 wk	7,257,600 s
13 wk	7,862,400 s
14 wk	8,467,200 s
15 wk	9,072,000 s
16 wk	9,676,800 s
17 wk	10,281,600 s
18 wk	10,886,400 s
19 wk	11,491,200 s
20 wk	12,096,000 s
25 wk	15,120,000 s
30 wk	18,144,000 s
40 wk	24,192,000 s
50 wk	30,240,000 s
60 wk	36,288,000 s
70 wk	42,336,000 s
75 wk	45,360,000 s
80 wk	48,384,000 s
90 wk	54,432,000 s
100 wk	60,480,000 s
120 wk	72,576,000 s
150 wk	90,720,000 s
200 wk	120,960,000 s
250 wk	151,200,000 s
300 wk	181,440,000 s
400 wk	241,920,000 s
500 wk	302,400,000 s
750 wk	453,600,000 s
1,000 wk	604,800,000 s
1,500 wk	907,200,000 s
2,000 wk	1,209,600,000 s
5,000 wk	3,024,000,000 s
10,000 wk	6,048,000,000 s

Questions

How many seconds are in a week?

604,800 seconds.

How do I convert weeks to seconds in a spreadsheet?

Put the value in A1 and type =A1*604800, then fill the formula down the column.

Are the values in the table exact?

They are calculated from the exact definitions of the units and rounded only for display. Open any row for the full working.