Free invoicing and business calculators
Practical browser-based tools for invoice dates, numbering, fees, freelance rates, and tax calculations. No signup required.
Free invoicing tool
Invoice number generator
Create professional sequential invoice numbers with custom prefixes, dates, separators, and number padding. Free and no signup required.
Open tool →Payment terms calculator
Invoice due date calculator
Calculate an invoice payment due date using Net 15, Net 30, Net 45, Net 60, Net 90, or custom payment terms.
Open tool →Net payment terms
Net 30 calculator
Add 30 days to an invoice date and find the Net 30 payment deadline instantly. Free calculator with no signup.
Open tool →Net payment terms
Net 60 calculator
Calculate the exact payment date for a Net 60 invoice. Enter the invoice date and get the due date instantly.
Open tool →Overdue invoice calculator
Late fee calculator
Calculate late fees, overdue days, interest, and the updated balance for an unpaid invoice using your agreed payment terms.
Open tool →Income converter
Hourly rate calculator
Convert annual, monthly, weekly, or daily income into an hourly rate using your actual workweeks and hours.
Open tool →Freelance pricing tool
Freelance rate calculator
Calculate a sustainable freelance hourly, day, and project rate based on income goals, expenses, taxes, time off, and billable hours.
Open tool →Tax arithmetic tool
Sales tax calculator
Calculate sales tax, tax-inclusive prices, and the final total using any sales-tax rate. Free and instant.
Open tool →VAT arithmetic tool
VAT calculator
Calculate net price, VAT amount, and gross price. Add VAT or extract VAT from an inclusive total using any rate.
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