139 metric teaspoons in US customary cups

Conversion formula
How to convert 139 metric teaspoons to US customary cups?

We know (by definition) that: $1\mathrm{brteaspoon}\approx 0.0211337641886519\mathrm{uscup}$

We can set up a proportion to solve for the number of US customary cups.

Now, we cross multiply to solve for our unknown $x$:

Conclusion: 139 ⁢ brteaspoon ≈ 2.9375932222226138 ⁢ uscup

Conversion in the opposite direction

The inverse of the conversion factor is that 1 US customary cup is equal to 0.340414728776978 times 139 metric teaspoons.

It can also be expressed as: 139 metric teaspoons is equal to $\frac{1}{\mathrm{0.340414728776978}}$ US customary cups.

Approximation

An approximate numerical result would be: one hundred and thirty-nine metric teaspoons is about two point nine four US customary cups, or alternatively, a US customary cup is about zero point three four times one hundred and thirty-nine metric teaspoons.