How to use it
- For a tip, enter the bill, the tip percentage and the number of people.
- For a discount, enter the original price and the discount percentage.
- Results update instantly and are rounded to two decimal places.
Frequently asked questions
How much should I tip?
Customs vary a lot. In the US, 15–20% is common in restaurants, while in many countries service is included and a small round-up is enough.
How do I calculate 30% off?
Multiply the price by 0.70. For 80, that gives 56, so you save 24.
Do two discounts add up?
Not exactly. 20% off then 10% off is 28% in total, not 30%, because the second discount applies to the reduced price.