Split by square footage

Room Size Rent Splitter

Split rent fairly based on bedroom square footage. Perfect for roommates with different room sizes — no more arguments about who's overpaying for a cupboard.

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How It Works

Three steps to a fair rent split.

1

Enter the total rent

Type in your monthly rent — in any currency. The calculator handles the rest.

2

Choose your method

'Bedrooms Only' splits purely by size. '50/50 Method' splits half equally (common areas) and half by bedroom size.

3

Enter each room's size

Add the square footage of each bedroom. The calculator works out each person's fair share instantly.

Room Size Rent Splitter
Results update instantly as you type.

Rent Details

💡 Bedrooms Only: Rent split purely by room size.

Who pays what

Total Rent £0.00

❓ Frequently Asked Questions

Which method is fairest — Bedrooms Only or 50/50?
It depends. Bedrooms Only is fairest when common areas are identical for everyone. The 50/50 Method is often preferred because it acknowledges that everyone benefits equally from the living room, kitchen, and bathroom, while still rewarding smaller bedrooms with lower rent.
What units should I use for room size?
Square feet or square metres — just be consistent. The calculator works on ratios, so the actual unit doesn't matter as long as everyone uses the same one.
Should I include en-suite bathrooms in the size?
Yes — if a bedroom has its own bathroom, adding that square footage to the room size is a fair way to account for the extra private space.
Can I use relative sizes instead of exact measurements?
Yes. If you don't know the exact sizes, enter relative numbers that reflect the proportion (e.g., 3, 2, 1 for large, medium, small). The ratios will still work correctly.
Is my data saved?
No. Everything runs in your browser — nothing is sent to any server. Refresh the page and it resets.

From the blog

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Ready to split rent fairly?

The Room Size Rent Splitter is free, instant, and takes less than a minute.

Open Rent Splitter Browse All Calculators