How do I convert CFM to L/s?

To convert cubic feet per minute (CFM) to liters per second (L/s), multiply the CFM value by 0.4719474. For example, 100 CFM equals 47.19474 L/s. This calculator does the math for you instantly.

What is the formula for CFM to L/s?

The formula is: L/s = CFM × 0.4719474. This factor comes from 1 cubic foot = 28.3168466 liters and 1 minute = 60 seconds, so 1 CFM = 28.3168466 / 60 ≈ 0.4719474 L/s.

Is this converter accurate for HVAC applications?

Yes, this converter uses the standard conversion factor, making it suitable for HVAC, ventilation, and airflow calculations. However, always verify with professional standards for critical systems.

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计算器: Cubic Feet per Minute to Liters per Second Converter.

使用计算器: Cubic Feet per Minute to Liters per Second Converter，根据输入获得清晰实用的结果。

此计算器尚未完全翻译——部分文本以英文显示。

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输入数值

输入时结果会更新。

02 / 答案

要转换的数值 (Cubic feet per minute (CFM))

Liters per second (L/s)

0.4719474432

Uses 1 international ft³ = 28.316846592 L and 60 seconds per minute.

Cite this calculator

Canonical URL: https://mathify.one/zh/conversion/cubic-feet-per-minute-to-liters-per-second

Cite as: Mathify. (n.d.). 计算器: Cubic Feet per Minute to Liters per Second Converter. https://mathify.one/zh/conversion/cubic-feet-per-minute-to-liters-per-second

Use Cases

HVAC and Ventilation Design

Quickly convert airflow rates between CFM and L/s to ensure proper ventilation sizing and compliance with building codes.

Example: Convert 500 CFM to L/s to check if it meets a 200 L/s requirement.

Industrial Airflow Measurement

Use the converter to standardize airflow readings from different instruments that output in CFM or L/s.

Example: Convert 1200 CFM to L/s for a dust collection system.

Frequently Asked Questions

How do I convert CFM to L/s?: To convert cubic feet per minute (CFM) to liters per second (L/s), multiply the CFM value by 0.4719474. For example, 100 CFM equals 47.19474 L/s. This calculator does the math for you instantly.
What is the formula for CFM to L/s?: The formula is: L/s = CFM × 0.4719474. This factor comes from 1 cubic foot = 28.3168466 liters and 1 minute = 60 seconds, so 1 CFM = 28.3168466 / 60 ≈ 0.4719474 L/s.
Is this converter accurate for HVAC applications?: Yes, this converter uses the standard conversion factor, making it suitable for HVAC, ventilation, and airflow calculations. However, always verify with professional standards for critical systems.

Tips & Common Mistakes

Tips

Remember that 1 CFM is approximately 0.4719 L/s, so you can do quick mental estimates by halving the CFM value.
For precise engineering work, use the exact conversion factor 0.4719474 to avoid rounding errors.
Double-check your input units: this converter only works with cubic feet per minute and liters per second, not other flow units.
If you need to convert in the opposite direction (L/s to CFM), divide by 0.4719474 instead of multiplying.

Common Mistakes to Avoid

Using the wrong conversion factor, such as 0.47 instead of 0.4719474, which can cause small errors in large values.
Confusing liters per second with liters per minute; this converter outputs L/s, not L/min.
Forgetting to convert minutes to seconds when doing manual calculations, leading to results off by a factor of 60.

Last updated: August 13, 2026