How to Calculate a Tip
The formula for calculating a tip is straightforward:
Tip = Bill Amount × (Tip Percentage / 100)
For example, a 20% tip on an $85 bill: $85 × 0.20 = $17.00, making the total $102.00.
Quick Mental Math Tricks
- 10% tip: Move the decimal one place left. $85 → $8.50
- 15% tip: Calculate 10%, then add half. $8.50 + $4.25 = $12.75
- 20% tip: Calculate 10%, then double. $8.50 × 2 = $17.00
- 25% tip: Calculate 10%, multiply by 2.5. Or find 25% by dividing by 4.
Splitting the Bill
When dining with a group, calculate the total (bill + tip) first, then divide equally. This calculator lets you set the number of people and instantly see each person's share.
Tipping Guidelines by Service
- Sit-down restaurant: 15-20% (18-20% is most common)
- Buffet: 10%
- Delivery: 15-20% (minimum $3-5)
- Takeout: 10% or round up
- Bar/drinks: $1-2 per drink or 15-20% of tab
- Hair salon: 15-20%
- Taxi/rideshare: 15-20%
Round Up Feature
The "round up" option rounds your total to the next whole dollar. This simplifies payment and slightly increases the tip — a small gesture that adds up for service workers.