Drop to Femtoliter Converter
Unit Converter
Instant · Precise · Universal
47 units available
6 categories total
How to Convert Drop to Femtoliter
To mL: multiply by 0.05 (approximate). To µL: multiply by 50. 20 drops ≈ 1 mL for aqueous solutions.
1 drop ≈ 0.05 mL = 50 µL ≈ 1/20 mL. Approximately 20 drops = 1 mL (for water-like liquids).
For example, 1 Drop (gtt) = 50000000000 Femtoliter (fL).
Drop to Femtoliter — Common Values
| Drop (gtt) | Femtoliter (fL) |
|---|---|
| 0.1 | 5000000000 |
| 0.5 | 25000000000 |
| 1 | 50000000000 |
| 2 | 100000000000 |
| 5 | 250000000000 |
| 10 | 500000000000 |
| 25 | 1.250000e+12 |
| 50 | 2.500000e+12 |
| 100 | 5.000000e+12 |
| 500 | 2.500000e+13 |
| 1000 | 5.000000e+13 |
About Drop (gtt)
Definition
The drop (medical/pharmacological) is an approximate unit of volume equal to about 0.05 milliliters, or 50 microliters.
Mathematical Relationship
1 drop ≈ 0.05 mL = 50 µL ≈ 1/20 mL. Approximately 20 drops = 1 mL (for water-like liquids).
Conversion Formula
To mL: multiply by 0.05 (approximate). To µL: multiply by 50. 20 drops ≈ 1 mL for aqueous solutions.
Practical Applications
Eye drop medication, ear drops, essential oil use, flavoring extracts in cooking, and IV drip rate measurement.
Interesting Facts
The size of a drop varies significantly: water drops from a glass dropper (~50 µL) differ from rain drops (~50,000–100,000 µL) by a factor of 1,000.
Common Mistakes
Assuming all drops are the same size — oily liquids produce larger drops than water. Always check the dropper calibration.
Educational Tips
20 drops ≈ 1 mL for water-based solutions. In IV therapy, standard drip sets deliver 10, 15, or 20 drops/mL depending on the design.
About Femtoliter (fL)
Definition
The femtoliter is a unit of volume equal to 10⁻¹⁵ liters, or one quadrillionth of a liter.
Mathematical Relationship
1 fL = 10⁻¹⁵ L = 10⁻¹² mL = 1,000 aL = 1 µm³ (cubic micrometer).
Conversion Formula
To liters: multiply by 10⁻¹⁵. To picoliters: divide by 1,000. To attoliters: multiply by 1,000.
Practical Applications
Measuring red blood cell volumes (normal MCV: 80–100 fL), inkjet droplet sizes, and flow cytometry particle analysis.
Interesting Facts
A human red blood cell has a volume of about 90 fL. The smallest inkjet droplets are in the range of 1–5 fL.
Common Mistakes
Assuming fL is too small to be practical — it is actually the standard unit used on every complete blood count (CBC) lab report.
Educational Tips
Remember: fL = femtoliter, the volume of blood cells. Normal MCV range: 80–100 fL. It's a key clinical measurement.