Free Business & Invoicing Calculators

Free calculators for profit margin, markup, VAT, break-even, freelance rates, invoice totals and more. Instant results, no sign-up.

Profit Margin Calculator

Calculate your profit margin, gross profit, and markup from revenue and cost. Free, instant, no sign-up.

Turn a cost + markup percentage into a selling price, and see the resulting profit margin. Free and instant.

Calculate gross profit and gross margin from revenue and cost of goods sold (COGS). Free, no sign-up.

Find how many units you must sell to cover your costs. Enter fixed costs, price, and variable cost per unit.

Work out the hourly rate you need to charge from your target income, billable hours, and weeks worked.

Add VAT to a net amount or remove VAT from a gross amount at any rate. Free, instant VAT calculator.

Calculate sales tax and the total price from a subtotal and tax rate. Free, instant, no sign-up.

Work out the final price and how much you save after a percentage discount. Free and instant.

Add tax and a discount to a subtotal to get the invoice total your client owes. Free, instant.

Calculate the late fee on an overdue invoice from the amount, monthly interest rate, and days overdue.

Calculate net profit and net profit margin from total revenue and total expenses. Free, instant.

Calculate return on investment (ROI) percentage from your gain and cost. Free, instant, no sign-up.

Once you’ve worked out your price, create a professional invoice in one sentence with Aviy’s free AI invoice generator.