Rust crate alternatives · data Oct 24, 2026
Alternatives to dtoa
Short answerThe closest alternatives to dtoa on crates.io data are zmij (3.4M real downloads a day), ryu (3.1M real downloads a day), cast (789K real downloads a day). Of the 8 we list, the most used is itoa, and 6 shipped a release in the last year. dtoa itself gets 496,627 a day with 48 dependents.
Every alternative we found
| Alternative | Real downloads a day | vs dtoa | Dependents | Last release | Why it is listed | |
|---|---|---|---|---|---|---|
| zmij Pulled in | 3,408,700 | 6.86x | 96 | 3mo | category No dynamic allocation, category No standard library, keyword "float" | compare |
| ryu Established | 3,105,583 | 6.25x | 390 | 8mo | category No dynamic allocation, category No standard library, keyword "float" | compare |
| cast Established | 788,776 | 1.59x | 108 | 5.1y | keyword "float" | compare |
| approx Widely used | 533,813 | 1.07x | 2,697 | 9mo | keyword "float" | compare |
| float-cmp Established | 483,211 | 0.97x | 318 | 2.1y | keyword "float" | compare |
| fraction Pulled in | 334,689 | 0.67x | 64 | 2mo | keyword "float" | compare |
| itoa Established | 4,278,839 | 8.62x | 791 | 7mo | category No dynamic allocation, category No standard library | compare |
| time Widely used | 2,434,189 | 4.90x | 6,747 | 3mo | category No standard library, category Value formatting | compare |
How to choose
- Same job, not the same API. Each line is listed because it shares a crates.io category or keyword with dtoa; 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 dtoa: 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 dtoa, 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: Few direct dependents and steady. 3,408,700 real downloads a day.zmijRust crate. A double-to-string conversion algorithm based on Schubfach and xjb. Real use: 3.4M downloads a day on quiet days; 96 crates depend on it.Read it next →Also worth your time