RoomMate Cost Splitter — Free Bill Split Calculator

A simple online cost splitter to divide expenses fairly. Split bills equally or itemize each purchase, with tax, service charges, and tips supported. Share results or collaborate in a group room. Available in IDR, MYR, SGD, USD, and EUR.

Cost Splitter Calculator (Itemized)
Add people and items, choose how tax and service apply, and see a clear, per‑person breakdown. Great for dinners, roommates, or shared shopping.
Equal Cost Splitter (with Tax & Tip)
Enter a bill amount and split it evenly among people. Optionally include tax, tip, service fees, or any additional amount.

How this cost splitter works

  1. Choose Itemized Cost Splitter or Equal Splitter.
  2. Add expenses and names, toggle tax/service/tips if needed.
  3. Share or download the final cost breakdown for everyone.
PrivacyGroup data is securely stored and automatically deleted after 14 days via Firestore TTL. The itemized cost splitter runs locally in your browser.

Example: Dinner with Friends

Add pizza, drinks, and dessert, assign who paid, and include tax/tip. The bill split calculator shows what each person owes—no spreadsheets.

See more cost splitter examples for trips and rent.

Why use RoomMate as your cost splitter?

  • Free, no sign‑up.
  • Itemized or equal splits; handles tax, tip, and service fees.
  • Share results or collaborate in a live group room.
  • Download the cost breakdown as an image.
  • Privacy‑first: group data auto‑deletes after 14 days.

Cost splitter FAQ

  • What's the difference between Quick Calculator and Group Room?
    Quick Calculator: One person enters all names and costs.
    Group Room: Each member joins and adds their own expenses live.
  • How is my data handled?
    All group room data is stored securely and deleted after 14 days using Google Firestore Time-To-Live (TTL). Quick Calculator runs only in your browser—data never leaves your device.
  • Can I use this for trips or regular bills?
    Yes! Start a new group for each event, or use Quick Calculator if you're collecting everyone's expenses yourself.
  • Which currencies are supported?
    You can use the cost splitter in IDR, MYR, SGD, USD, and EUR. Choose your currency from the selector at the top of each calculator.
  • Need help?
    Email us: Contact here
Cost Splitter Calculator (Itemized)
Itemize purchases and split costs per person with tax and service options.

Supported: IDR • MYR • SGD • USD • EUR

Purchased Items

No items added yet.

Cost Breakdown

Add items to see breakdown.

Grand Total
$0.00
Tax and Service Charge

Choose how tax & service are applied: independently, or sequentially.

Add New Item

Type existing name or enter a new one.

Collaborate with Friends
Create a shared room to split costs together in real time.

Start a Group Calculation

Create a room and share the link with friends.

Initializing session...

Join an Existing Room

Collaborative calculations use shared rooms and require a secure session. By creating or joining a room, you agree to temporarily store calculation data for collaboration purposes.