How many US fluid ounces are in 1 teaspoon?

1 teaspoon equals 0.166667 US fl oz.

How many US fluid ounces are in 10 teaspoons?

10 tsp equals 1.66667 US fl oz.

Use the reverse converter: 1 US fluid ounce equals 6 tsp.

Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.

To convert teaspoons to US fluid ounces, multiply the value by 0.166666667.

US fl oz = tsp × 0.166666667

40 tsp × 0.166666667 = 6.67 US fl oz

Note: "cup" here means the US cup (about 236.6 mL). Metric cups (250 mL), imperial cups and US/UK fluid ounces are listed as separate units.

Teaspoon (tsp): A US kitchen measure equal to about 4.929 millilitres, used in recipes.
US Fluid Ounce (US fl oz): A US liquid measure of about 29.5735 mL, one sixteenth of a US pint.

How do I convert teaspoons to US fluid ounces?: To convert teaspoons to US fluid ounces, multiply the value by 0.166666667.
How many US fluid ounces are in 1 teaspoon?: 1 teaspoon equals 0.166667 US fl oz.
How many US fluid ounces are in 10 teaspoons?: 10 tsp equals 1.66667 US fl oz.
How do I convert US fluid ounces back to teaspoons?: Use the reverse converter: 1 US fluid ounce equals 6 tsp.
Is this converter accurate?: Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.