Teaspoons to milliliters

milliliters = teaspoons × 4.928922

How to convert teaspoons to milliliters

One teaspoon is 4.928922 milliliters, so multiply the number of teaspoons by 4.928922. For example, 20 teaspoons is 20 × 4.928922 = 98.578432 milliliters. To go back, divide by the same number, or multiply by 0.20288414.

Quick estimate

Multiplying by about 4.9 gets within 0.6% of the exact answer, which is enough to check that a result makes sense.

Where it comes up

Volume conversions come up in recipes, fuel economy, drink and bottle sizes, garden and pool water, and engine sizes.

teaspoons	milliliters
1 tsp	4.928922 ml
2 tsp	9.857843 ml
3 tsp	14.786765 ml
4 tsp	19.715686 ml
5 tsp	24.644608 ml
6 tsp	29.57353 ml
7 tsp	34.502451 ml
8 tsp	39.431373 ml
9 tsp	44.360294 ml
10 tsp	49.289216 ml
11 tsp	54.218138 ml
12 tsp	59.147059 ml
13 tsp	64.075981 ml
14 tsp	69.004902 ml
15 tsp	73.933824 ml
16 tsp	78.862746 ml
17 tsp	83.791667 ml
18 tsp	88.720589 ml
19 tsp	93.64951 ml
20 tsp	98.578432 ml
25 tsp	123.22304 ml
30 tsp	147.867648 ml
40 tsp	197.156864 ml
50 tsp	246.44608 ml
60 tsp	295.735296 ml
70 tsp	345.024512 ml
75 tsp	369.66912 ml
80 tsp	394.313727 ml
90 tsp	443.602943 ml
100 tsp	492.892159 ml
120 tsp	591.470591 ml
150 tsp	739.338239 ml
200 tsp	985.784319 ml
250 tsp	1,232.23 ml
300 tsp	1,478.68 ml
400 tsp	1,971.57 ml
500 tsp	2,464.46 ml
750 tsp	3,696.69 ml
1,000 tsp	4,928.92 ml
1,500 tsp	7,393.38 ml
2,000 tsp	9,857.84 ml
5,000 tsp	24,644.61 ml
10,000 tsp	49,289.22 ml

Questions

How many milliliters are in a teaspoon?

4.928922 milliliters.

How do I convert teaspoons to milliliters in a spreadsheet?

Put the value in A1 and type =A1*4.928922, then fill the formula down the column.

Are the values in the table exact?

They are calculated from the exact definitions of the units and rounded only for display. Open any row for the full working.