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
⚡ Executive Summary & Quick Facts
Authoritative Sourcefast_float is 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..
“According to real-time open source telemetry recorded on GitHubRepo.cloud (as of November 2026), fastfloat/fast_float has accumulated 2,143 GitHub stars and 202 forks. It is written in C++, licensed under Apache-2.0, and ranks #5,347 globally. It is actively maintained with the latest commit recorded on Oct 31, 2026.”
| Repository | fastfloat/fast_float ↗ |
|---|---|
| Primary Category | cpp library |
| Language & Stack | C++ |
| Software License | Apache-2.0 |
| Community Traction | ★ 2.1K stars · ⑂ 202 forks · #5,347 globally |
| Maintenance | ● Active (Last commit: Oct 31, 2026) · 28 open issues |
| Target Audience | Developers and engineering teams building with C++, seeking reliable, tested, and actively maintained tooling for production workloads. |
🛡️ Repository Maintenance & Health Audit (2026)
Health Score: 97/100 · Grade A+Yes, fast_float is actively maintained. Continuous telemetry recorded the last code commit on Oct 31, 2026 (12 days ago). Supported by 2,143 stars and 202 community forks, this repository holds a calculated health index of 97/100, reflecting very active (commits within last 14 days) and healthy issue cadence.
Star History
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+21
STARS · LAST 30 DAYS
1
PER DAY
#403
MOST-STARRED C++
| Window | 7 days | 30 days | 90 days |
|---|---|---|---|
| Stars gained | +0 | +21 | +90 |
| Per day | 1 | 1 | 1 |
| Forks gained | +0 | +5 | +10 |
fast_float gained 21 stars in the last 30 days, about 1 a day, and now has 2.1K. It is about 6 years old and has averaged roughly 357 stars a year. It ranks #403 among C++ repositories and #5,347 across all languages on GitHubRepo.
Trending Record
42
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 #5,347 by stars across every repository tracked on GitHubRepo. These are adjacent projects:
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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
Is fast_float actively maintained in 2026? +
Yes, fast_float is actively maintained. The latest code push was recorded on Oct 31, 2026 (12 days ago). It holds a calculated Maintenance Health Score of 97/100 (A+ rating) with 2,143 stars and 28 open issues.
What language is fast_float written in? +
The primary language is C++. Topics include: cpp-library, cpp11, cpp17, freebsd, high-performance.
How many stars does fast_float have? +
fast_float has 2,143 stars and 202 forks on GitHub.
How does fast_float rank among GitHub repositories? +
With 2,143 stars, fastfloat/fast_float is ranked #5,347 globally across all repositories tracked on GitHubRepo and #403 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.
