Why a slider?
Typing "18" into a percentage field takes the same number of keystrokes as a slider, but the slider lets you sweep 1% increments and watch the per-person total move — useful for groups where someone is anchoring on a per-person budget.
Tip Calculator
Tip percent slider, bill split, optional tax — everything you actually need at the table.
Two-thirds of US adults look up a tip amount on their phone at least once a month. The calculator below keeps it simple: a slider for the tip percent, one number for the bill, one for the group size, and an optional sales-tax line for jurisdictions where tax is itemised separately. Every value updates as you slide or type — no submit button, no confirmation modal.
$
Tax
$0.00
Tip
$14.40
Total
$94.40
Per person
$94.40
How to use
Enter the bill
The pre-tax subtotal from the receipt. Most US restaurants show this above the tax line.
Pick the tip percent
Use the slider, or tap one of the quick presets (10–25%). The total recalculates instantly.
Split if needed
Set the group size to divide the post-tip total per person. The calculator clamps to a minimum of 1.
Typical tip ranges
| Setting | Typical tip |
|---|---|
| Sit-down restaurant (US) | 15–20% |
| Bartender, per drink | $1–2 or 15–20% |
| Hair / nails | 15–20% |
| Taxi / rideshare | 10–15% |
| Delivery | 10–15% or $3–5 minimum |
| Quick-service counter | 0–10% (optional) |
Frequently asked questions
- Do I tip on the pre- or post-tax amount?
- Etiquette is to tip on the pre-tax subtotal. The calculator defaults to that — leave the tax field at 0% to compute the tip on the bill amount only, then add tax to the total.
- How do I split unevenly?
- Compute the total as if you were splitting evenly, then divvy the per-person amount by hand. The calculator returns the per-person total under an even split — if Alice wants to cover Bob's drink, you'll still need a pen.
- What's the tip etiquette outside the US?
- Wildly variable. Tipping is built into the price across most of Europe and Asia; in some places (Japan) leaving a tip is actively rude. Convertitive will eventually ship a country-aware tipping guide.
- Does the calculator save my numbers?
- No. Everything stays in your browser; nothing is sent to a server.
- Can I tip more than 25%?
- Yes — the slider caps at 30% for the typical case, but you can use the percentage calculator under /math/ for arbitrarily high tips.
About
Rounding
Numbers display with two decimal places. The raw arithmetic uses IEEE 754 doubles, so $0.005 is rounded half-to-even — banker's rounding — by JavaScript's toFixed.