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Liters to Femtoliters Converter

Enter the volume in liters below to convert it to femtoliters.

Convert Liters to Femtoliters

Enter a value in liters (L) to convert to femtoliters (fL).

Result
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5e+15femtoliters
5 L = 5e+15 fL
Result updates automatically
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Equivalent Measurements Across UnitsFor 5 L
Milliliters5,000 mL
Suggested Conversions
Reference:NIST OWM (SI Units — Volume)
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Liter to Femtoliter Conversion Table

Table showing various liter measurements converted to femtoliters. Click any preset value or arrow to load it into the converter.

How to Convert Liters to Femtoliters

To convert liters to femtoliters, multiply the volume by the following conversion ratio: 1e+15 femtoliters/liter.

Since one liter is equal to 1e+15 femtoliters, you can use this simple formula to convert:

femtoliters = liters × 1e+15

The volume in femtoliters is equal to the volume in liters multiplied by 1e+15.

For example, here's how to convert 5 liters to femtoliters using the formula above.

femtoliters = (5 L × 1e+15) = 5e+15 fL

How Many Femtoliters Are in a Liter?

There are 1e+15 femtoliters in a liter, which is why we use this value in the formula above.

1 L = 1e+15 fL|1 fL = 1e-15 L

Our liter to femtoliter calculator automatically converts your volume measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.

Liters and femtoliters are both units used to measure volume. Keep reading to learn more about each unit.

What Is a Liter?

Metric unit of volume equal to 1 cubic decimeter (1,000 mL). It serves as a primary reference unit for measuring volume across scientific and practical applications. [1]

The liter is classified as a metric and SI-compatible unit of volume. Liters can be abbreviated as L; for example, 1 liter can be written as 1 L.

As the primary coherent reference unit for volume in this category, all other volume units are mathematically anchored to the liter (L).

In practice, liters (L) are widely used across standard volume applications within SI metric workflows, engineering documentation, and technical data sheets.

What Is a Femtoliter?

A femtoliter is a unit of volume equal to 1e-15 liters (L), the base unit for volume. 10⁻¹⁵ liters (1 µm³), used in hematology (mean corpuscular volume). [2]

The femtoliter is classified as a metric and SI-compatible unit of volume. Femtoliters can be abbreviated as fL; for example, 1 femtoliter can be written as 1 fL.

In the metric system, "femto" is the standard SI prefix for quadrillionths, or 10⁻¹⁵. This makes the femtoliter (fL) a convenient decimal multiple of the liter (L).

In practice, femtoliters (fL) are widely used across fine-tolerance laboratory, analytical, and micro-scale volume measurements within SI metric workflows, engineering documentation, and technical data sheets.

When converting volume between liters (L) and femtoliters (fL), keep full floating-point precision (1 L = 1e+15 fL; 1 fL = 1e-15 L) during intermediate calculations and round only the final femtoliter figure to match your instrument tolerance.

More Liter & Femtoliter Conversions

Need to calculate in the opposite direction? Use our femtoliters to liters calculator to switch your starting unit immediately. You can also explore related tools such as converting femtoliters to liters, converting liters to gallons (us), or converting liters to cups (us).

Frequently Asked Questions

There are 1.000000e+15 femtoliters (fL) in 1 liter (L). Conversely, 1 femtoliter (fL) is equal to 1.000000e-15 liters (L).

References

NIST · BIPM · ISO
  1. [1]
    NIST OWM (SI Units — Volume)·Volume & Liquid Metrology Standard — Liters (L) to Femtoliters (fL)
    NIST OWM Standard
  2. [2]
    NIST HB 44 (Liquid & Dry Capacity Tables)·Unit Specifications: Liter (L) & Femtoliter (fL)
    NIST HB 44 Specification
  3. [3]
    NIST SP 811 (NIST SP 811 App. B.9)·Conversion Factors & Mathematical Basis (L to fL)
    NIST SP 811 Reference
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