Fast and exact implementation of the C++ from_chars functions for number types: 4x to 10x faster than strtod, part of GCC 12, MySQL, DuckDB, Chromium, Redis and WebKit/Safari
Star History
Momentum
+53
STARS · LAST 30 DAYS
2
PER DAY
#123
MOST-STARRED C++
| Window | 7 days | 30 days | 90 days |
|---|---|---|---|
| Stars gained | +14 | +53 | +180 |
| Per day | 2 | 2 | 2 |
| Forks gained | +1 | +4 | +10 |
fast_float gained 53 stars in the last 30 days, about 2 a day, and now has 2.1K. It is about 6 years old and has averaged roughly 353 stars a year. It ranks #123 among C++ repositories and #1,817 across all languages on GitHubRepo.
Trending Record
3
DAYS ON TRENDING
#1689
BEST RANK
Sep 26, 2026
FIRST APPEARANCE
Active
STATUS TODAY
fast_float has maintained a continuous presence across global trending indexes, peaking at #1689. Below is the 30-day activity profile:
💡 Overview
fast_float is an open-source project written in C++: Fast and exact implementation of the C++ from_chars functions for number types: 4x to 10x faster than strtod, part of GCC 12, MySQL, DuckDB, Chromium, Redis and WebKit/Safari.
Engineered for speed, consistency, and developer ease, it solves common hurdles in cpp-library, cpp11, cpp17. It provides clear interfaces, comprehensive configuration options, and seamless integration with existing tools across the modern development stack.
⚡ Key Features
Optimized execution pipeline written in C++ for predictable speed.
Zero-friction configuration with comprehensive sensible defaults out of the box.
Cross-platform runtime support across Linux, macOS, and Windows environments.
Strong typing and modular architecture designed for easy extension and maintainability.
Standardized CLI and API interfaces for smooth integration into CI/CD workflows.
Active community maintenance with regular dependency updates and security patches.
📥 Installation
$ git clone https://github.com/fastfloat/fast_float.git
cd fast_float⚙ System Requirements
Platforms
- • macOS
- • Linux
- • Windows
Runtime & Dependencies
C++20 compliant compiler (GCC 11+, Clang 13+, MSVC)
Architecture
x86_64, ARM64 (Apple Silicon & Graviton)
🧠 How It Works
fast_float coordinates its core functionality through a modular C++ pipeline. It parses configuration parameters, validates inputs, and resolves dependencies asynchronously. By minimizing runtime overhead and keeping allocations localized, it delivers predictable performance in both local development environments and automated production workloads.
🎯 Production Use Cases
Production System Integration
Embed fast_float into C++ backend services to handle core application logic.
CI/CD Automated Pipelines
Run automated validation, builds, and integration suites during deployments.
Developer Tooling & Workflows
Accelerate developer onboarding with pre-configured project utilities.
Open Source Extension
Fork and customize internal modules under the repository's open Apache-2.0 license.
🚀 Getting Started
Install fast_float using your package manager: `git clone https://github.com/fastfloat/fast_float.git`
Initialize your project workspace or configuration file for fast_float.
Import fast_float into your codebase or invoke it directly from your terminal.
Execute your test suite or run `fast_float --help` to verify successful setup.
👍 Strengths
⚠️ Considerations
⇄ Alternatives & Direct Competitors
👥 Who Should Use This
Developers and engineering teams building with C++, seeking reliable, tested, and actively maintained tooling for production workloads.
🏆 Nearby in the Rankings
fastfloat/fast_float is currently ranked #1,817 by stars across every repository tracked on GitHubRepo. These are adjacent projects:
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|---|---|---|---|---|
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| #1,817 | fastfloat/fast_float This Project | C++ | ★ 2.1K | |
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Frequently Asked Questions
What does fast_float do? +
Fast and exact implementation of the C++ from_chars functions for number types: 4x to 10x faster than strtod, part of GCC 12, MySQL, DuckDB, Chromium, Redis and WebKit/Safari
What language is fast_float written in? +
The primary language is C++. Topics include: cpp-library, cpp11, cpp17, freebsd, high-performance.
Is fast_float actively maintained? +
Yes, the last recorded push was on Sep 25, 2026 with 28 open issues being tracked.
How many stars does fast_float have? +
fast_float has 2,116 stars and 196 forks on GitHub.
How does fast_float rank among GitHub repositories? +
With 2,116 stars, fastfloat/fast_float is ranked #1,817 globally across all repositories tracked on GitHubRepo and #123 among C++ projects.
What license is fast_float distributed under? +
The repository reports a Apache-2.0 license. Always verify the repository LICENSE file for legal terms.
