Rust crate alternatives · data Oct 24, 2026
Alternatives to atoi
Short answerThe closest alternatives to atoi on crates.io data are itoa (4.3M real downloads a day), num-conv (2.1M real downloads a day), deranged (2.1M real downloads a day). Of the 8 we list, the most used is itoa, and 7 shipped a release in the last year. atoi itself gets 689,620 a day with 125 dependents.
Every alternative we found
| Alternative | Real downloads a day | vs atoi | Dependents | Last release | Why it is listed | |
|---|---|---|---|---|---|---|
| itoa Established | 4,278,839 | 6.20x | 791 | 7mo | keyword "integer" | compare |
| num-conv Pulled in | 2,114,479 | 3.07x | 4 | 5mo | keyword "integer" | compare |
| deranged Pulled in | 2,065,934 | 3.00x | 25 | 11d | keyword "integer" | compare |
| crypto-bigint Established | 937,488 | 1.36x | 167 | 1d | keyword "integer" | compare |
| serde_repr Widely used | 895,570 | 1.30x | 1,237 | 3mo | keyword "integer" | compare |
| cast Established | 788,776 | 1.14x | 108 | 5.1y | keyword "integer" | compare |
| num_enum Widely used | 760,679 | 1.10x | 1,159 | 7mo | keyword "conversion" | compare |
| integer-encoding Established | 247,577 | 0.36x | 135 | 12mo | keyword "integer" | compare |
How to choose
- Same job, not the same API. Each line is listed because it shares a crates.io category or keyword with atoi; read its description before you swap.
- More dependents means more answered questions and a smaller chance it disappears.
- Check the last release against how fast you need fixes. For atoi: is it still maintained?
Rules
Alternatives = tracked crates (top 1000 by downloads) that share a specific crates.io category (2 points each) or keyword (3 points each) with atoi, most similar first; its own parts (same name prefix) and crates it depends on or that depend on it are left out, because those are companions, not substitutes. Real downloads = quiet-day median, crates.io data Oct 24, 2026. Built when we find 3 or more.
Up next
The closest alternative: Established and steady. 4,278,839 real downloads a day.itoaRust crate. Fast integer primitive to string conversion. Real use: 4.3M downloads a day on quiet days; 791 crates depend on it.Read it next →Also worth your time