This tool lists every odd number in the range you choose, in order and with a total count. It starts with 1 to 100, and you can change it to any range, including negative numbers.
List odd numbers in a range
50 odd numbers from 1 to 100.
- 1
- 3
- 5
- 7
- 9
- 11
- 13
- 15
- 17
- 19
- 21
- 23
- 25
- 27
- 29
- 31
- 33
- 35
- 37
- 39
- 41
- 43
- 45
- 47
- 49
- 51
- 53
- 55
- 57
- 59
- 61
- 63
- 65
- 67
- 69
- 71
- 73
- 75
- 77
- 79
- 81
- 83
- 85
- 87
- 89
- 91
- 93
- 95
- 97
- 99
Odd numbers from 1 to 100
The odd numbers from 1 to 100 are 1, 3, 5, 7, 9, … 95, 97, 99, a total of 50. Their sum is exactly 2,500 = 50². This is no coincidence: adding the first n odd numbers always gives n².
How to list odd numbers in a range
- Type a Start number and an End number.
- Select Generate List.
- Copy the results or download a TXT or CSV file.
Why the first n odd numbers sum to n²
Picture a square of dots. A 1 × 1 square has 1 dot. To grow it to 2 × 2 you add an L-shaped border of 3 dots, to reach 3 × 3 you add 5 more, then 7, and so on. Each border is the next odd number, so 1 + 3 + 5 + … + (2n − 1) = n².
| n | First n odd numbers | Sum | n² |
|---|---|---|---|
| 1 | 1 | 1 | 1 |
| 2 | 1 + 3 | 4 | 4 |
| 3 | 1 + 3 + 5 | 9 | 9 |
| 4 | 1 + 3 + 5 + 7 | 16 | 16 |
| 5 | 1 + 3 + 5 + 7 + 9 | 25 | 25 |
Odd numbers in negative ranges
Odd numbers continue below zero: −1, −3, −5 and so on. From −9 to 9 there are 10 odd numbers, five on each side of zero, and zero itself is not among them because zero is even.
Frequently asked questions
How many odd numbers are there between 1 and 1,000?
500. Half of the integers from 1 to 1,000 are odd.
Is 1 included when I start at 1?
Yes. Both the start and end numbers are included whenever they are odd.
Can I list even and odd numbers together?
Yes, with the Even and Odd Numbers List, which shows them side by side.