keisoku

Split the Bill by Ratio Calculator

Just enter the total and each person's share to instantly split a bill by weighted ratios. Give the boss a bigger portion and juniors a smaller one, and get the per-person amount for any ratio. Supports rounding to 10s or 100s.

Input

$

Members and their shares

x
x
x

The share is a ratio. For example, 2 and 1 means the cost is split 2 to 1.

Rounding unit (per person)
Rounding method

Result

Amount for the person paying the most (Member 1)

$13,300.00

Total amount

$30,000.00

People

3

Rounding adjustment

-$100.00

Amount per person

MemberSharePercentAmount
Member 1244.4%$13,300.00
Member 21.533.3%$10,000.00
Member 3122.2%$6,700.00

The rounding adjustment (-$100.00) is added to the person paying the most, Member 1, so the parts add up to the exact total.

How it works

  • Each member's amount is calculated as total amount x that member's share / sum of all shares. Shares are treated as ratios, so 2 and 1 means a 2-to-1 split.
  • Use the Add button to include any number of members. Setting ratios such as 2 for the boss, 1.5 for a senior, and 1 for a junior gives a weighted split based on seniority.
  • Choose a rounding unit of 1, 10, 100, or 1000, and a method of round up, round to nearest, or round down. Rounding to units like 100 (no change needed) makes collecting money easier.
  • Any rounding gap between the parts and the total (the rounding adjustment) is added to the person paying the most, so everyone's amounts add up exactly to the total you entered.
  • The results table lists each member's share, percent of the whole, and amount, and the amount for the person paying the most is shown large as the headline figure.
  • Note: amounts are estimates rounded to the unit you set. When collecting money, adjust as the organizer sees fit based on the people and situation.