Small, useful tools and kits

Single-purpose tools that run in your browser and practical kits you can download once and keep.

• Break-Even CalculatorHow many units or sales you need before a product or service makes a profit
• Day Rate to Salary CalculatorCompare a contractor day rate with an equivalent employee salary, both ways
• Deposit and Milestone Split CalculatorSplit a project fee into a deposit and milestone payments
• Early Payment Discount CalculatorIs 2/10 net 30 worth taking? See the saving and the implied annual rate
• Freelance Hourly Rate CalculatorTurn a target income into an hourly and day rate, with the math shown
• Hours to Decimal ConverterTurn hours and minutes into decimal hours for timesheets and invoices, and back
• Invoice Due Date CalculatorNet 30, net 60 or custom terms, with business-day and weekend handling
• Late Payment Fee CalculatorFlat fees or monthly interest on overdue invoices, prorated by day
• Markup and Margin CalculatorConvert between markup, margin, cost and price without confusing the two
• VAT CalculatorAdd VAT to a net price or remove it from a gross price at any rate