Sky,
You can check yourself by turning a wrench against a beam-type torque wrench to see how much torque you are applying.
I like to set a click type torque wrench to the desired value and then, using my wrench, tighten it until it clicks to see how much manual force is required to reach the desired (specified) torque.
You can use any length wrench for this, and probably should use the one you use to tighten the drain plug, because the torque wrench is measuring the result at the business end.
Stripped drain plug threads are a real bummer so, if you don't use a torque wrench, at least "educate" your wrist so you will have some idea of what it should be. Then just "snug it up" - but not as tight as it would be if you had used a torque wrench. Be conservative.
"Just snug" is actually a pretty good idea because it doesn't take much tension to plug the hole and keep the oil in and, if you put a small screw-type hose clamp on the hex head of the drain plug, it won't come loose.
Good luck.