Calculator
Brush-head planner
Enter how many people use electric brushes, the date the current heads went on and, if you like, the heads per pack. The planner shows heads and packs a year and the next change date.
In short
Heads a year = people x 4, because the NHS advises a new head every 3 months. Two people need 8 heads a year. The next change is 3 calendar months after the current heads went on.
Plan it
Heads a year
8
4 per person
Packs a year
2
of 4 heads
Next change
pick a date
every 3 months
Based on the NHS advice to replace a brush or head every 3 months, or sooner if the bristles are worn.
Heads a year by household
| People | Heads a year | Packs of 4 | Packs of 8 |
|---|---|---|---|
| 1 | 4 | 1 | 1 |
| 2 | 8 | 2 | 1 |
| 3 | 12 | 3 | 2 |
| 4 | 16 | 4 | 2 |