About us
About HarnDuay
HarnDuay is a web app built to make shared expenses easier to settle without spreadsheets or awkward manual calculations.
What HarnDuay is for
HarnDuay helps friends, families, teams, and travel groups split expenses when each person pays or consumes a different amount.
It is useful for restaurant meals, shabu, barbecue, parties, travel, and team reimbursement scenarios.
Product intent
We focus on clear calculations, readable summaries, and practical features such as VAT, service charge, and shareable results.
The content across the site helps users choose the right calculator page for their situation.
Common mistakes
- Forgetting to separate items some people did not consume, such as desserts, drinks, or add-ons.
- Splitting VAT and service equally even when food totals differ a lot.
- Not marking who paid up front, which causes the reimbursement summary to point to the wrong person.
Tips for faster bill splitting
- Add everyone first, then enter receipt items to reduce backtracking.
- Use the duplicate action when your receipt has several similar lines.
- Combine quantity with split weights when one item has uneven portions.
Try it with your real receipt
Add your friends, enter receipt items, adjust VAT or service charge if needed, and share the final summary link instantly.
Related pages
Split bill calculatorCalculate each person's share for mixed restaurant bills.Share food costHandle shabu, barbecue, drinks, and uneven food orders.Share travel expenseTrack group trip spending for hotels, fuel, and tickets.Tip calculatorSplit tips and service charge fairly across a group.VAT calculatorCalculate Thai VAT 7% and total payable amounts quickly.ContactReach the HarnDuay team for support or product questions.