Componentpedia / Listings / itoa

Last update: 03/04/2026

itoa

Fast function for printing integer primitives to a decimal string

Latest version: 1.0.18 registry icon
Maintenance score
100
Safety score
100
Popularity score
75
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Security
  Vulnerabilities
Version Suggest Low Medium High Critical
1.0.18 0 0 0 0 0
1.0.17 0 0 0 0 0
1.0.16 0 0 0 0 0
1.0.15 0 0 0 0 0
1.0.14 0 0 0 0 0
1.0.13 0 0 0 0 0
1.0.12 0 0 0 0 0
1.0.11 0 0 0 0 0
1.0.10 0 0 0 0 0
1.0.9 0 0 0 0 0
1.0.8 0 0 0 0 0
1.0.7 0 0 0 0 0
1.0.6 0 0 0 0 0
1.0.5 0 0 0 0 0
1.0.4 0 0 0 0 0
1.0.3 0 0 0 0 0
1.0.2 0 0 0 0 0
1.0.1 0 0 0 0 0
1.0.0 0 0 0 0 0
0.4.8 0 0 0 0 0
0.4.7 0 0 0 0 0
0.4.6 0 0 0 0 0
0.4.5 0 0 0 0 0
0.4.4 0 0 0 0 0
0.4.3 0 0 0 0 0
0.4.2 0 0 0 0 0
0.4.1 0 0 0 0 0
0.4.0 0 0 0 0 0
0.3.4 0 0 0 0 0
0.3.3 0 0 0 0 0
0.3.2 0 0 0 0 0
0.3.1 0 0 0 0 0
0.3.0 0 0 0 0 0
0.2.1 0 0 0 0 0
0.2.0 0 0 0 0 0
0.1.1 0 0 0 0 0
0.1.0 0 0 0 0 0

Stability
Latest release:

1.0.18 - This version is safe to use because it has no known security vulnerabilities at this time. Find out if your coding project uses this component and get notified of any reported security vulnerabilities with Meterian-X Open Source Security Platform

Licensing

Maintain your licence declarations and avoid unwanted licences to protect your IP the way you intended.

Apache-2.0   -   Apache License 2.0

Not a wildcard

Not proprietary

OSI Compliant

MIT   -   MIT License

Not a wildcard

Not proprietary

OSI Compliant

itoa

github crates.io docs.rs build status

This crate provides a fast conversion of integer primitives to decimal strings. The implementation comes straight from libcore but avoids the performance penalty of going through core::fmt::Formatter.

See also zmij for printing floating point primitives.

[dependencies]
itoa = "1.0"

Example

fn main() {
    let mut buffer = itoa::Buffer::new();
    let printed = buffer.format(128u64);
    assert_eq!(printed, "128");
}

Performance

The itoa-benchmark compares this library and other Rust integer formatting implementations across a range of integer sizes. The vertical axis in this chart shows nanoseconds taken by a single execution of itoa::Buffer::new().format(value) so a lower result indicates a faster library.

performance


License

Licensed under either of Apache License, Version 2.0 or MIT license at your option.
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in this crate by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.