Currently it is Week Number 23
A popular lookup for the Week Numbers for 2018. This handy chart shows the Week Number Calendar for the year and is commonly used for work across UK, Europe and USA.
| From | To | |
| Week 1 | 01-Jan-18 | 07-Jan-18 |
| Week 2 | 08-Jan-18 | 14-Jan-18 |
| Week 3 | 15-Jan-18 | 21-Jan-18 |
| Week 4 | 22-Jan-18 | 28-Jan-18 |
| Week 5 | 29-Jan-18 | 04-Feb-18 |
| Week 6 | 05-Feb-18 | 11-Feb-18 |
| Week 7 | 12-Feb-18 | 18-Feb-18 |
| Week 8 | 19-Feb-18 | 25-Feb-18 |
| Week 9 | 26-Feb-18 | 04-Mar-18 |
| Week 10 | 05-Mar-18 | 11-Mar-18 |
| Week 11 | 12-Mar-18 | 18-Mar-18 |
| Week 12 | 19-Mar-18 | 25-Mar-18 |
| Week 13 | 26-Mar-18 | 01-Apr-18 |
| Week 14 | 02-Apr-18 | 08-Apr-18 |
| Week 15 | 09-Apr-18 | 15-Apr-18 |
| Week 16 | 16-Apr-18 | 22-Apr-18 |
| Week 17 | 23-Apr-18 | 29-Apr-18 |
| Week 18 | 30-Apr-18 | 06-May-18 |
| Week 19 | 07-May-18 | 13-May-18 |
| Week 20 | 14-May-18 | 20-May-18 |
| Week 21 | 21-May-18 | 27-May-18 |
| Week 22 | 28-May-18 | 03-Jun-18 |
| Week 23 | 04-Jun-18 | 10-Jun-18 |
| Week 24 | 11-Jun-18 | 17-Jun-18 |
| Week 25 | 18-Jun-18 | 24-Jun-18 |
| Week 26 | 25-Jun-18 | 01-Jul-18 |
| Week 27 | 02-Jul-18 | 08-Jul-18 |
| Week 28 | 09-Jul-18 | 15-Jul-18 |
| Week 29 | 16-Jul-18 | 22-Jul-18 |
| Week 30 | 23-Jul-18 | 29-Jul-18 |
| Week 31 | 30-Jul-18 | 05-Aug-18 |
| Week 32 | 06-Aug-18 | 12-Aug-18 |
| Week 33 | 13-Aug-18 | 19-Aug-18 |
| Week 34 | 20-Aug-18 | 26-Aug-18 |
| Week 35 | 27-Aug-18 | 02-Sep-18 |
| Week 36 | 03-Sep-18 | 09-Sep-18 |
| Week 37 | 10-Sep-18 | 16-Sep-18 |
| Week 38 | 17-Sep-18 | 23-Sep-18 |
| Week 39 | 24-Sep-18 | 30-Sep-18 |
| Week 40 | 01-Oct-18 | 07-Oct-18 |
| Week 41 | 08-Oct-18 | 14-Oct-18 |
| Week 42 | 15-Oct-18 | 21-Oct-18 |
| Week 43 | 22-Oct-18 | 28-Oct-18 |
| Week 44 | 29-Oct-18 | 04-Nov-18 |
| Week 45 | 05-Nov-18 | 11-Nov-18 |
| Week 46 | 12-Nov-18 | 18-Nov-18 |
| Week 47 | 19-Nov-18 | 25-Nov-18 |
| Week 48 | 26-Nov-18 | 02-Dec-18 |
| Week 49 | 03-Dec-18 | 09-Dec-18 |
| Week 50 | 10-Dec-18 | 16-Dec-18 |
| Week 51 | 17-Dec-18 | 23-Dec-18 |
| Week 52 | 24-Dec-18 | 30-Dec-18 |
Looking for 2019? Week Numbers for 2019
