Don't be a Jerk. Use this Tip Calculator.

Haha, that's one way to put it! A tip calculator definitely takes the guesswork out of tipping and helps make sure you're leaving a fair gratuity without overthinking the math. Whether you're dining out, splitting a bill with friends, or traveling somewhere with different tipping customs, having a quick and reliable tip calculator can save time and avoid awkward moments at the end of the meal.
https://tipcalculator.us

why cant i jst use windows calculator or google calculator what is your usp?