STEP ONE by STEPS has sold 1,837,380 copies in 6 countries. The album sold best in United Kingdom (1,500,000 copies), Japan (102,380 copies) and Belgium (100,000 copies).
STEP ONE certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 Australia |
70,000 | 1x Platinum | DECEMBER 1998 |
Australia Sales: 70,000
Certification / note: 1x Platinum
Certification Date / sales as of: DECEMBER 1998
|
 Belgium |
100,000 | 2x Platinum |
Belgium Sales: 100,000
Certification / note: 2x Platinum
Certification Date / sales as of:
|
|
 Japan |
102,380 | 1x Gold | March 1999 |
Japan Sales: 102,380
Certification / note: 1x Gold
Certification Date / sales as of: March 1999
|
 Netherlands |
50,000 | 1x Gold | 1999 |
Netherlands Sales: 50,000
Certification / note: 1x Gold
Certification Date / sales as of: 1999
|
 New Zealand |
15,000 | 1x Platinum |
New Zealand Sales: 15,000
Certification / note: 1x Platinum
Certification Date / sales as of:
|
|
 United Kingdom |
1,500,000 | 5x Platinum | 12 November, 1999 |
United Kingdom Sales: 1,500,000
Certification / note: 5x Platinum
Certification Date / sales as of: 12 November, 1999
|
 Europe (IFPI) |
1,000,000 | 1x Platinum | 1999 |
Europe (IFPI) Sales: 1,000,000
Certification / note: 1x Platinum
Certification Date / sales as of: 1999
|
| Total sales | 1,837,380 | (in 6 countries) |
Total
Sales: 1,837,380
(in 6 countries)
|
Year-end chart performance for STEP ONE
| Chart 1998 | Rank | Sales |
| Australian Albums (ARIA) |
35 | >70,000 |
| Belgian Albums (Ultratop Flanders) |
4 | |
| UK Albums |
14 | 770,000 |
| Chart 1999 | Rank | Sales |
| Belgian Albums (Ultratop Flanders) |
28 | |
 European Albums (Music & Media) |
44 | |
| New Zealand Albums (RMNZ) |
30 | |
| UK Albums |
19 | 570,000 |