Purchase Order Calculator
Work out the full cost of an order before you place it. List the items with quantities and unit costs, add the supplier discount, shipping and tax, and an optional budget. The calculator shows the items subtotal, discount, shipping and tax, the order total, the number of units and the average landed cost per unit, and whether the order is within budget.
- Runs in your browser
- No sign-up
- Free to use
One line per item.
To turn this into a printable PO document, use the Purchase Order Generator.
How to use Purchase Order Calculator
- List items: description | quantity | unit cost.
- Enter discount, shipping and tax.
- Add the budget.
- Check the total and landed cost.
Purchase Order Calculator features
Landed cost
Per unit including shipping.
Supplier discount
On the items.
Budget check
Over or under.
Units
Total ordered.
Paste from spreadsheets
Tab or | separated lines.
Any currency
Choose from 30+ currencies; amounts are formatted for it.
When to use Purchase Order Calculator
- Office and IT purchases.
- Restocking a shop.
- Comparing supplier quotes.
- Approving orders against a budget.
Purchase Order Calculator FAQ
What is landed cost?
The total cost of getting a product to you, including shipping and duties, divided by units.
Is shipping taxed?
It depends on the country; here tax applies to the discounted items plus shipping.
Can I print a PO?
Use the Purchase Order Generator for a printable document.
Can I compare suppliers?
Run the calculation for each quote and compare landed cost per unit.
Comparing on landed cost
The cheapest unit price is not always the cheapest order: shipping, minimum quantities and discounts change the picture. Landed cost per unit puts supplier quotes on equal terms.
Use the budget check before approval to avoid surprises.
Re-run the numbers whenever an input changes – a supplier raises prices, a fee is updated or demand shifts – because small changes in costs or volumes often have a large effect on the result.
The calculator is deliberately simple: it uses the figures you enter and shows the arithmetic, so you can follow every step and repeat it in a spreadsheet when you want to build a fuller model.