{"success":true,"version":"v1","request":{"tool":"get_calculator_schema","calculator_id":"bill-split"},"result":{"entity_type":"calculator","id":"bill-split","calculator_id":"bill-split","canonical_url":"https://tttkmbb.com/everyday/bill-split","name":"Bill Split Calculator","title":"Bill Split Calculator – Share a Bill Equally with an Optional Tip","category":"everyday","category_name":"Everyday Life","tool_name":"calculate_bill_split","featured_mcp_tool":false,"description":"Adds an optional tip percentage to a bill and divides the total equally among a number of people, reporting the tip, the total and each person's share.","use_when":"A restaurant bill, taxi fare or shared purchase must be divided equally among several people, with or without a tip.","do_not_use_when":"Shares are unequal (itemised bills), you only need the tip amount for one payer (use tip), or the cost is a trip's fuel (use fuel-cost).","inputs":[{"name":"total_bill","label":"Bill amount","type":"number","required":true,"min":0,"max":100000000,"description":"Bill total before tip, in your currency.","example":120},{"name":"people","label":"Number of people","type":"integer","required":true,"min":1,"max":1000,"description":"How many people share the bill equally.","example":4},{"name":"tip_percent","label":"Tip","type":"number","unit":"%","required":false,"default":0,"min":0,"max":100,"description":"Tip as a percentage of the bill (15 means 15 %).","example":15}],"outputs":[{"name":"tip_amount","label":"Tip","type":"number","decimals":2,"description":"total_bill × tip_percent / 100."},{"name":"total_with_tip","label":"Total including tip","type":"number","decimals":2,"description":"total_bill + tip_amount."},{"name":"per_person","label":"Per person","type":"number","decimals":2,"description":"total_with_tip / people."},{"name":"bill_per_person","label":"Bill share per person (before tip)","type":"number","decimals":2,"description":"total_bill / people."},{"name":"tip_per_person","label":"Tip per person","type":"number","decimals":2,"description":"tip_amount / people."}],"input_schema":{"type":"object","properties":{"total_bill":{"description":"Bill total before tip, in your currency.","type":"number","minimum":0,"maximum":100000000,"examples":[120]},"people":{"description":"How many people share the bill equally.","type":"integer","minimum":1,"maximum":1000,"examples":[4]},"tip_percent":{"description":"Tip as a percentage of the bill (15 means 15 %). Unit: %.","type":"number","minimum":0,"maximum":100,"default":0,"examples":[15],"x-unit":"%"}},"additionalProperties":false,"required":["total_bill","people"]},"output_schema":{"type":"object","properties":{"tip_amount":{"description":"total_bill × tip_percent / 100.","type":"number"},"total_with_tip":{"description":"total_bill + tip_amount.","type":"number"},"per_person":{"description":"total_with_tip / people.","type":"number"},"bill_per_person":{"description":"total_bill / people.","type":"number"},"tip_per_person":{"description":"tip_amount / people.","type":"number"}}},"formula":"tip_amount = total_bill × tip_percent / 100; total_with_tip = total_bill + tip_amount; per_person = total_with_tip / people","sources":[{"name":"Gratuity – customary tipping rates by country (Wikipedia)","url":"https://en.wikipedia.org/wiki/Gratuity","type":"reference","retrieved_at":"2026-09-23"}],"freshness":{"type":"static","max_age_seconds":null,"note":"Deterministic formula with fixed constants; results never go stale. Inputs supplied by the caller determine the output."},"examples":[{"name":"120 bill, 4 people, 15 % tip","inputs":{"total_bill":120,"people":4,"tip_percent":15},"expected":{"tip_amount":18,"total_with_tip":138,"per_person":34.5,"bill_per_person":30,"tip_per_person":4.5},"url":"https://tttkmbb.com/api/v1/calculate/bill-split?total_bill=120&people=4&tip_percent=15"},{"name":"87.50 bill, 3 people, no tip","inputs":{"total_bill":87.5,"people":3},"expected":{"tip_amount":0,"total_with_tip":87.5,"per_person":29.17,"bill_per_person":29.17,"tip_per_person":0},"url":"https://tttkmbb.com/api/v1/calculate/bill-split?total_bill=87.5&people=3"}],"faq":[{"q":"Should the tip be calculated before or after sales tax?","a":"Customs vary; in the US the tip is commonly computed on the pre-tax amount. Enter whichever base you want as total_bill."},{"q":"The per-person amount does not multiply back exactly to the total.","a":"Shares are rounded to 2 decimals; a difference of a few cents is rounding and one person can cover it."}],"tags":["split bill","bill splitter","split the check","tip split","share cost"],"related":[{"calculator_id":"tip","reason":"Tip amount and total for a single payer."},{"calculator_id":"fuel-cost","reason":"Share a trip's fuel cost between passengers."}],"links":{"html":"https://tttkmbb.com/everyday/bill-split","markdown":"https://tttkmbb.com/everyday/bill-split.md","json":"https://tttkmbb.com/everyday/bill-split.json","api":"https://tttkmbb.com/api/v1/calculate/bill-split","schema":"https://tttkmbb.com/api/v1/calculators/bill-split","openapi":"https://tttkmbb.com/openapi.json","mcp":"https://tttkmbb.com/mcp"},"version":"v1","updated_at":"2026-09-23"},"timestamp":"2026-09-23T23:23:13Z"}