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Tip calculator

See how much to tip and what the bill comes to with it.

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Classic percentage calculators

X% of YX is ?% of Y% increase% decreaseY + X%Y − X%

What is X% of Y?

    Formula: result = rate × base ÷ 100

    X is what percent of Y?

      Formula: result = part ÷ whole × 100

      Percentage increase from X to Y

        Formula: result = (final − initial) ÷ initial × 100

        Percentage decrease from X to Y

          Formula: result = (initial − final) ÷ initial × 100

          Add X% to Y

            Formula: result = base × (1 + rate ÷ 100)

            Subtract X% from Y

              Formula: result = base × (1 − rate ÷ 100)

              How to calculate a tip

              Multiply the bill by the tip percentage and divide by 100. A 20% tip on $85 is $17, so the total is 85 × 1.2 = $102.

              Quick trick: 10% is the bill with the decimal point moved one place left; double it for 20%, add half of it for 15%.

              How much to tip in the US

              For table service in US restaurants, 15% to 20% of the pre-tax bill is customary; 18% is a common middle ground.

              Worked examples

              QuestionCalculationWorkingResult
              How much is a 15% tip on $48?What is X% of Y?15 × 48 ÷ 1007.2
              Tip 18% on 72.40What is X% of Y?18 × 72.40 ÷ 10013.03
              20% tip on $85What is X% of Y?20 × 85 ÷ 10017

              Frequently asked questions

              Should I tip on the total before or after tax?

              The usual practice is to tip on the pre-tax amount, though many people simply tip on the total.

              How do I split the bill with tip?

              Add the tip to the bill and divide by the number of people: $85 + 20% = $102, or $25.50 each for four people.

              How much is an 18% tip on $64?

              64 × 18 ÷ 100 = $11.52.

              Last updated .