A metric teaspoon is 5 milliliters.
Metric teaspoons to Attoliters Converter — metric tsp to aL
Convert Metric teaspoon (metric tsp) to Attoliter (aL) using the exact conversion factor (1 metric teaspoon = 5e+15 attoliter). See the formula, worked examples, and conversion table.
Metric teaspoons to Attoliters converter
Converter
Volume Converter
Convert metric, US customary, imperial, cooking, dry, and industrial volume units.
Context values
Some unit families need one extra value for a physically accurate result.
Attoliter is 1e-18 liter units.
Result = input x 5e-6 / 1e-21.
Volume uses the cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Metric teaspoons to Attoliters
Metric teaspoon and Attoliter appear side by side at fuel pumps and on beverage labels, since the US measures liquids in gallons while most of the world uses liters. Specifically: A metric teaspoon is 5 milliliters, and attoliter is 1e-18 liter units.
Formula
attoliters = metric teaspoons × 5e+15
This factor comes from each unit's defined relationship to the category's base unit: 1 metric teaspoon equals 0.000005 base units, and 1 attoliter equals 1e-21 base units, so dividing one by the other gives the direct metric teaspoon-to-attoliter factor of 5e+15.
Simple example
1 metric tsp × 5e+15 = 5e+15 aL
1 metric teaspoon = 5e+15 attoliters.
Real-world example
10 metric tsp × 5e+15 = 5e+16 aL
10 metric teaspoons = 5e+16 attoliters.
Conversion table
| Metric teaspoon (metric tsp) | Attoliter (aL) |
|---|---|
| 1 metric tsp | 5e+15 aL |
| 5 metric tsp | 2.5e+16 aL |
| 10 metric tsp | 5e+16 aL |
| 25 metric tsp | 1.25e+17 aL |
| 50 metric tsp | 2.5e+17 aL |
| 100 metric tsp | 5e+17 aL |
Reverse conversion: Attoliter to Metric teaspoon
5e+15 aL × 2e-16 = 1 metric tsp
5e+15 attoliters = 1 metric teaspoon.
metric teaspoons = attoliters × 2e-16
For a page dedicated to this direction, see Attoliter to Metric teaspoon.
Understanding the Metric teaspoon (metric tsp)
A metric teaspoon is 5 milliliters.
Understanding the Attoliter (aL)
Attoliter is 1e-18 liter units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many attoliters are in 1 metric teaspoon?
1 metric teaspoon equals 5e+15 attoliters, using the exact defined conversion factor rather than an estimate.
How do I convert metric teaspoon to attoliter?
Multiply the metric teaspoon value by 5e+15. The converter above does this instantly to whatever precision you set.
How do I convert attoliter back to metric teaspoon?
Use the reverse factor: 1 attoliter equals 2e-16 metric teaspoons. You can also use the swap control in the converter above to flip the direction instantly.
What is a metric teaspoon?
Metric teaspoon (metric tsp) is a unit of volume.
What is a attoliter?
Attoliter (aL) is a unit of volume.
Is the metric teaspoon to attoliter conversion exact?
Yes. Both metric teaspoon and attoliter are defined by fixed standards rather than physical artifacts, so the factor of 5e+15 used above is exact to as many digits as you choose to display.