How do you split rent by room size?

Choose Room size and enter the private square footage allocated to each person, using square feet in every row. Divide a shared bedroom's area among its occupants before entering it, so that bedroom is counted once. With $2,400 and rooms of 140, 120 and 100 square feet the total is 360 square feet, so the shares are $933.33, $800.00 and $666.67. The formula it used, $2,400.00 x room size / 360 sq ft, is printed under the table, and each row carries its own line of arithmetic, such as $2,400.00 x 140 / 360 leading to the payable $933.33.

What happens to the cent that will not divide?

$1,000 between three people is $333.3333 each, which nobody can pay. Every share is floored to the cent, then the cents left over are handed out one at a time, largest fraction first and the earlier input row on a tie. Names are not sorted alphabetically. One person pays $333.34, the other two pay $333.33, and the three shares add to $1,000.00 rather than $999.99. The complete report identifies each recipient by row number and name, including when names repeat. GBP uses the same rule for remaining pennies. Displayed percentages describe approximate proportions before this final rounding; use the payable amounts and exact total for the split.

How is shared space counted?

By a setting you control, not by a rule this page picked for you. Left at All by room size, the whole rent divides in proportion to the private rooms. Set 20, 30 or 50 percent and that slice comes off the top, splits evenly between everyone, and only the rest divides by room size. At 30 percent the same $2,400 and the same three rooms come to $893.33, $800.00 and $706.67, because $720 of the rent is now shared equally. Shared portion (%) also accepts any whole percentage from 0 to 100. The same per-person shared slice can accompany income or custom weights; an even split already divides everything equally.

Can it split by income instead of room size?

Yes. Income divides the rent in proportion to what each person earns, so $3,000 between incomes of $4,000 and $2,000 is $2,000 and $1,000 with no shared slice. Use the selected currency and the same income period for everyone, such as monthly income in each row. Custom weight does the same with numbers your group agrees on, whether that is nights in the flat each week or a ratio, and it accepts up to six decimal places. Values can be zero, but the total weight must be positive. Even ignores the value column altogether: $2,400 between three people is $800.00 each.

How many people can it split between, and do they need names?

Between 2 and 20 people, added or removed a row at a time. Names are optional: an empty name box prints as Person 1, Person 2 and so on. Enter a positive rent up to 100,000,000 selected currency units with at most two decimal places. Income, area and custom values accept up to six decimal places and a maximum of 1,000,000 per row. Use a decimal point and correctly grouped three-digit commas, such as 2400.50 or 2,400.50. A leading $ or £ is accepted for rent and income only when it matches the selected currency; areas and custom weights use plain numbers. Malformed grouping, decimal commas, mixed currency symbols and spaces inside digits are refused with a message identifying the problem.

Does it handle a part month or different move-in dates?

No, and it says so rather than guessing. This page divides one rent amount between people who are all there for the same period. For a part month, work out the amount owed for those days first and enter that as the rent. Splitting by days would need move-in dates the page never asks for, and utilities are not included either: add them to the rent yourself, or split them as a second sum.

Does anything I type leave my browser?

No. The arithmetic runs on your own device, nothing is uploaded and there is no account. Saved work restores without rewriting it. Valid deliberate changes save in this browser; invalid drafts remain on screen and leave the previous saved work intact. Conflicting changes from another tab are kept instead of silently overwritten. Forget saved settings removes the stored entry while keeping your current work on screen. If storage is unavailable, the page explains that and the calculator still works.

How do you split rent with a couple sharing one bedroom?

Add a row for each partner and divide that bedroom's agreed private-room weight between them. For a couple and one solo roommate in two equally valued bedrooms, Custom weight values of 0.5, 0.5 and 1 split $2,400 into $600, $600 and $1,200 when Shared is 0. With 30 percent shared equally per person, the same weights give $660, $660 and $1,080. That assumes equal common-space use per person; your group chooses the rule. You can instead divide the shared bedroom's area between its occupants in Room size. This page applies the rule you supply; it does not automatically price amenities, compare room preferences, determine a fair price or run the NYT or Splitwise workflow.

Can I split rent by agreed percentages?

Choose Custom weight and set Shared to 0. Enter percentage numbers such as 70 and 30: $2,400 splits into $1,680 and $720. The entries are relative weights divided by their sum, so 7 and 3 give the same result. Use numbers totaling 100 when you mean literal percentage shares; other totals are normalized ratios. Adding a shared slice changes the final percentages.

Can I use pounds instead of dollars?

Choose GBP for pounds and pence or USD for dollars and cents. The currency labels the amount you enter and every current monetary result; changing it does not convert the amount or fetch an exchange rate. Enter all incomes in that same currency. This can split a supplied UK household rent or a NYC dollar rent by your chosen policy, but it does not determine local rent rules, permitted charges or lease obligations. The fixed worked examples on this page remain in US dollars.

What can I do if Copy is refused?

The complete selectable report opens so you can select and copy it yourself. It includes the current rent, currency, policy, indexed people, payable amounts, working, leftover-unit recipients and raw entries. If copying a worked example is refused, its selectable report uses that example in US dollars. Editing the calculator returns the report to your current work; a stale copy attempt does not report success for the new result.

Rent Split Calculator

Type the rent once, add a row per person, and pick the policy: an even split, by bedroom size, by income, or by any weight your group agreed on. What this page does differently is show its arithmetic and then prove it adds up. $2,400 across rooms of 140, 120 and 100 square feet comes to $933.33, $800.00 and $666.67, with the formula it used, $2,400.00 x room size / 360 sq ft, printed under the table and a line of working beside every individual share. When the rent will not divide cleanly the leftover cents are handed out one at a time rather than rounded away, so three people splitting $1,000 pay $333.34, $333.33 and $333.33, which comes to $1,000.00 and not $999.99. A shared-space option takes 20, 30 or 50 percent of the rent off the top, splits that part evenly between everyone and divides only the rest by room size, for the flat where the common space is the point. It all runs in your browser, and Copy hands you the table, the formula and the line that reconciles them. It works for roommates in an apartment or house. The figures here and the worked examples use US dollars; choose GBP for pounds and pence, with no exchange-rate conversion.

Rent $2,400.00By room size3 people

Scroll horizontally inside the table to see every column. Keyboard: focus the table, then use the arrow keys.

rent    $2,400.00
basis   room size

row   name   room size   approx theory %   payable
1     Ava    140 sq ft          38.8888%   $933.33
2     Ben    120 sq ft          33.3333%   $800.00
3     Cal    100 sq ft          27.7777%   $666.67
                                           -------
                                           $2,400.00

Theory percentages are approximate; payable amounts reconcile exactly.

Amounts use the selected currency; changing it relabels amounts and does not convert money.

Each share = $2,400.00 x room size / 360 sq ft. The 3 shares add to $2,400.00, the rent exactly: the leftover cent went to Cal.

Shared portion (%)A shared portion splits evenly between everyone first, and the rest divides by room size.

Name, row 1room size (sq ft)

$2,400.00 x 140 / 360 -> $933.33

Name, row 2room size (sq ft)

$2,400.00 x 120 / 360 -> $800.00

Name, row 3room size (sq ft)

$2,400.00 x 100 / 360 -> $666.67, one leftover cent included

Between 2 and 20 people, named or not.

Complete selectable rent split report

Current rent, policy, each indexed row, exact amounts, rounding and raw entries.

Rent split report
Currency: USD; a denomination, with no exchange conversion.
Raw rent: "2400"; raw basis: "area"; raw shared percentage: 0.
Row 1 raw name="Ava", raw value="140"
Row 2 raw name="Ben", raw value="120"
Row 3 raw name="Cal", raw value="100"

Rent: $2,400.00 = 240000 exact minor units (cents).
Basis: room size; shared space actually used: 0%; people: 3.
Theory percentage describes the unrounded policy share. It is floored to four decimal places and is approximate; the payable amount is the exact integer minor-unit result.
Largest remainder rounding: floor every exact share, then award one minor unit to the largest remaining fractions; ties go to the earlier input row, not alphabetical name.

Row 1: Ava
Normalized room size: 140 sq ft; approximate theory percentage 38.8888%; payable $933.33 = 93333 exact minor units.
Working (rounded to payable minor units): $2,400.00 x 140 / 360 ≈ $933.33.
Leftover cent: none awarded to this input row.

Row 2: Ben
Normalized room size: 120 sq ft; approximate theory percentage 33.3333%; payable $800.00 = 80000 exact minor units.
Working (rounded to payable minor units): $2,400.00 x 120 / 360 ≈ $800.00.
Leftover cent: none awarded to this input row.

Row 3: Cal
Normalized room size: 100 sq ft; approximate theory percentage 27.7777%; payable $666.67 = 66667 exact minor units.
Working (rounded to payable minor units): $2,400.00 x 100 / 360 ≈ $666.67, one leftover cent included.
Leftover cent: one awarded to this input row.

Formula: Each share = $2,400.00 x room size / 360 sq ft.
Payable total: $2,400.00 = 240000 exact minor units, matching the rent.
Leftover minor units distributed: 1; recipients: row 3 (Cal).
One rent amount for the same period, 2–20 people, rent up to 100,000,000 selected currency units, weights up to 1,000,000 with six decimal places. No exchange conversion, move-in dates, part-month proration, utility calculation or preference auction is included.

Choose the policy together. This calculator applies the even, room-area, income or custom weights you supply. It does not decide what is fair, compare room preferences or run the NYT or Splitwise workflow. All people must cover the same period; dates, utilities, deposits and tenancy rules are outside this calculation.

For a couple sharing a bedroom, add each partner as a person and divide that bedroom's private area or agreed weight between them before entering it. For one couple and one solo flatmate, weights 0.5, 0.5 and 1 split 2,400 as 600, 600 and 1,200. With 30% shared per person they pay 660, 660 and 1,080. This assumes equal use of common space per person; your group chooses the assumption.

For agreed percentages, choose Custom weight and set Shared to 0: weights 70 and 30 divide 2,400 as 1,680 and 720. These are relative weights; they need not sum to 100. Income values must use the same currency and period. Room areas must use the same unit.

Displayed percentages are approximate theoretical proportions before the last cents are allocated; payable amounts are exact to the selected currency's minor unit. The worked examples below use US dollars.

Even split, 3 people$2,400
$800.00 each
By room size140/120/100 sq ft
$933.33 / $800.00 / $666.67, adding to $2,400.00 exactly
Remainder cent$100 / 3
$33.34 / $33.33 / $33.33, adding to $100.00 exactly

Where the odd cent goes. Three people and $1,000 is $333.3333 each, which is not a payable number, so every share is floored to the cent and the cents left over are handed out one at a time, largest fraction first and the earlier input row on a tie. That gives $333.34, $333.33 and $333.33: one person pays a cent more, and the three shares add to $1,000.00 rather than to $999.99. The table names whoever took a leftover cent, so you can hand it to someone else next month.

Common questions

How do you split rent by room size?: Choose Room size and enter the private square footage allocated to each person, using square feet in every row. Divide a shared bedroom's area among its occupants before entering it, so that bedroom is counted once. With $2,400 and rooms of 140, 120 and 100 square feet the total is 360 square feet, so the shares are $933.33, $800.00 and $666.67. The formula it used, $2,400.00 x room size / 360 sq ft, is printed under the table, and each row carries its own line of arithmetic, such as $2,400.00 x 140 / 360 leading to the payable $933.33.
What happens to the cent that will not divide?: $1,000 between three people is $333.3333 each, which nobody can pay. Every share is floored to the cent, then the cents left over are handed out one at a time, largest fraction first and the earlier input row on a tie. Names are not sorted alphabetically. One person pays $333.34, the other two pay $333.33, and the three shares add to $1,000.00 rather than $999.99. The complete report identifies each recipient by row number and name, including when names repeat. GBP uses the same rule for remaining pennies. Displayed percentages describe approximate proportions before this final rounding; use the payable amounts and exact total for the split.
How is shared space counted?: By a setting you control, not by a rule this page picked for you. Left at All by room size, the whole rent divides in proportion to the private rooms. Set 20, 30 or 50 percent and that slice comes off the top, splits evenly between everyone, and only the rest divides by room size. At 30 percent the same $2,400 and the same three rooms come to $893.33, $800.00 and $706.67, because $720 of the rent is now shared equally. Shared portion (%) also accepts any whole percentage from 0 to 100. The same per-person shared slice can accompany income or custom weights; an even split already divides everything equally.
Can it split by income instead of room size?: Yes. Income divides the rent in proportion to what each person earns, so $3,000 between incomes of $4,000 and $2,000 is $2,000 and $1,000 with no shared slice. Use the selected currency and the same income period for everyone, such as monthly income in each row. Custom weight does the same with numbers your group agrees on, whether that is nights in the flat each week or a ratio, and it accepts up to six decimal places. Values can be zero, but the total weight must be positive. Even ignores the value column altogether: $2,400 between three people is $800.00 each.
How many people can it split between, and do they need names?: Between 2 and 20 people, added or removed a row at a time. Names are optional: an empty name box prints as Person 1, Person 2 and so on. Enter a positive rent up to 100,000,000 selected currency units with at most two decimal places. Income, area and custom values accept up to six decimal places and a maximum of 1,000,000 per row. Use a decimal point and correctly grouped three-digit commas, such as 2400.50 or 2,400.50. A leading $ or £ is accepted for rent and income only when it matches the selected currency; areas and custom weights use plain numbers. Malformed grouping, decimal commas, mixed currency symbols and spaces inside digits are refused with a message identifying the problem.
Does it handle a part month or different move-in dates?: No, and it says so rather than guessing. This page divides one rent amount between people who are all there for the same period. For a part month, work out the amount owed for those days first and enter that as the rent. Splitting by days would need move-in dates the page never asks for, and utilities are not included either: add them to the rent yourself, or split them as a second sum.
Does anything I type leave my browser?: No. The arithmetic runs on your own device, nothing is uploaded and there is no account. Saved work restores without rewriting it. Valid deliberate changes save in this browser; invalid drafts remain on screen and leave the previous saved work intact. Conflicting changes from another tab are kept instead of silently overwritten. Forget saved settings removes the stored entry while keeping your current work on screen. If storage is unavailable, the page explains that and the calculator still works.
How do you split rent with a couple sharing one bedroom?: Add a row for each partner and divide that bedroom's agreed private-room weight between them. For a couple and one solo roommate in two equally valued bedrooms, Custom weight values of 0.5, 0.5 and 1 split $2,400 into $600, $600 and $1,200 when Shared is 0. With 30 percent shared equally per person, the same weights give $660, $660 and $1,080. That assumes equal common-space use per person; your group chooses the rule. You can instead divide the shared bedroom's area between its occupants in Room size. This page applies the rule you supply; it does not automatically price amenities, compare room preferences, determine a fair price or run the NYT or Splitwise workflow.
Can I split rent by agreed percentages?: Choose Custom weight and set Shared to 0. Enter percentage numbers such as 70 and 30: $2,400 splits into $1,680 and $720. The entries are relative weights divided by their sum, so 7 and 3 give the same result. Use numbers totaling 100 when you mean literal percentage shares; other totals are normalized ratios. Adding a shared slice changes the final percentages.
Can I use pounds instead of dollars?: Choose GBP for pounds and pence or USD for dollars and cents. The currency labels the amount you enter and every current monetary result; changing it does not convert the amount or fetch an exchange rate. Enter all incomes in that same currency. This can split a supplied UK household rent or a NYC dollar rent by your chosen policy, but it does not determine local rent rules, permitted charges or lease obligations. The fixed worked examples on this page remain in US dollars.
What can I do if Copy is refused?: The complete selectable report opens so you can select and copy it yourself. It includes the current rent, currency, policy, indexed people, payable amounts, working, leftover-unit recipients and raw entries. If copying a worked example is refused, its selectable report uses that example in US dollars. Editing the calculator returns the report to your current work; a stale copy attempt does not report success for the new result.

Exact arithmetic on the rent and shares you enter, and the shares always add back to the total: the odd remaining cents are handed out one at a time rather than rounded away. It is arithmetic, not tenancy advice.