Quick, accurate calculators for everyday business and personal finance needs.
Calculate margin, markup, and gross profit from cost and selling price. Essential for pricing products right.
Convert hourly rates to annual salary. See weekly, biweekly, monthly, and daily breakdowns instantly.
Calculate sales tax for any US state. Enter amount and state, get the total with tax in one click.
Calculate tips and split bills with friends. Custom percentages, per-person breakdowns, tipping guide included.
Three calculators in one — what is X% of Y, X is what % of Y, and percentage increase/decrease.
Count words, characters, sentences, paragraphs, and reading time. Great for writers and students.
Generate strong random passwords with custom length and character options. Fully browser-based security.
Calculate monthly payments, total interest, and amortization schedules for any loan amount and term.
Calculate sale prices and savings. Supports stacked discounts and sales tax for accurate totals.
Create QR codes for URLs, text, phone, email, and WiFi networks. Download as PNG instantly.
InvoiceForge provides a growing collection of free calculators designed to make everyday business math easy. Whether you're calculating profit margins for a new product, figuring out what an hourly rate translates to annually, or splitting a dinner bill — we've got you covered.
All calculators run in your browser. We don't store any data, and you never need to sign up.