Weight limit for mail covered by a single 42 cent stamp (USPS)?

Question

Much appreciated if someone could let me know. Also, is it appropriate to multiply the postage by the same amount I multiply weight (as an estimate)? Thanks for your time

Answer 1

I think "owns" is r****d for ounce.

A 42 cent stamp covers 1 ounce and its 17 cents for each additional ounce.

Answer 2

1. 1 owns=1 stamp

2. if over 1 owns, yu kan put on 2 stamps, it werk.  But yu overpae.

2 owns=0.59.....(42+17)

3=0.76

3.5 owns=0.93$

Answer 3

Up to one ounce.

The USPS sells "second-ounce" stamps, for heavier letters.