Business & Freelancer
Calculators & Generators
Professional-grade financial tools, freelance pricing calculators, and instant generators — engineered for accuracy, designed for clarity, and built for the people who run their own numbers.
Business Tools
Run the numbers that move your company forward — profitability, returns, leverage, liquidity, and customer value, all in one place. Every business calculator below is built on standard accounting formulas and includes a plain-English explanation so you can interpret results with confidence.
Profit Margin Calculator
Calculate gross, operating, and net profit margins instantly with industry benchmarks.
ROI Calculator
Measure return on investment with annualized returns and time-adjusted metrics.
Break-Even Calculator
Find the exact sales volume where total revenue equals total costs.
Markup Calculator
Calculate product markup percentage and selling price from cost.
Cash Flow Calculator
Project operating, investing, and financing cash flows for any period.
Business Loan Calculator
Estimate monthly payments, total interest, and amortization schedule.
Compound Interest Calculator
See how investments grow with compounding over time, with regular contributions.
Simple Interest Calculator
Calculate interest using the simple interest formula for loans and deposits.
NPV Calculator
Evaluate investment projects with Net Present Value and discount rate analysis.
Payback Period Calculator
Determine how long an investment takes to recover its initial cost.
Working Capital Calculator
Measure liquidity by computing working capital and the current ratio.
Debt-to-Equity Calculator
Assess financial leverage with the debt-to-equity ratio and benchmarks.
Current Ratio Calculator
Evaluate short-term liquidity with the current and quick ratios.
Inventory Turnover Calculator
Measure how efficiently inventory is sold and replaced over a period.
Customer Lifetime Value Calculator
Estimate total revenue a customer generates across the entire relationship.
Freelancer Tools
Price your work, project your income, and stay on top of taxes and time. These freelancer calculators were built specifically for independent contractors, consultants, and solopreneurs — not retrofitted from corporate tools. Set rates that actually cover your life, quote projects profitably, and never lose money on overtime again.
Freelance Hourly Rate Calculator
Set the right hourly rate based on expenses, billable hours, and target income.
Self-Employment Tax Calculator
Estimate SE tax (Medicare + Social Security) for US self-employed earners.
Project Quote Estimator
Build accurate client quotes with hours, rate, expenses, and profit buffer.
Day Rate Calculator
Convert annual salary targets into a sustainable day rate for contractors.
Salary to Hourly Converter
Translate annual salary into hourly, daily, weekly, and monthly equivalents.
Annual Income Projector
Project yearly freelance earnings from rates, hours, and utilization.
Overtime Pay Calculator
Compute overtime pay using FLSA rules with regular and overtime rates.
Time Card Calculator
Track daily work hours with breaks and calculate weekly pay totals.
Vacation Pay Calculator
Calculate accrued vacation pay based on hours worked and pay rate.
Customer Acquisition Cost Calculator
Measure marketing efficiency by computing cost per new client acquired.
Generators Tools
Stop wrestling with templates. Generate invoices, business names, email signatures, QR codes, passwords, and more in seconds — then download, print, or copy. Every generator produces clean, professional output you can use immediately, with no watermarks, no paywalls, and no email gate.
Invoice Generator
Create professional, printable invoices with line items, taxes, and totals.
Business Name Generator
Generate unique, brandable business names from your keywords and industry.
Email Signature Generator
Design polished email signatures with your name, role, links, and branding.
Tagline & Slogan Generator
Craft memorable taglines and slogans that capture your brand essence.
Meta Description Generator
Write SEO-optimized meta descriptions that improve click-through rates.
Strong Password Generator
Generate cryptographically secure passwords with custom strength rules.
QR Code Generator
Create downloadable QR codes for URLs, text, contact info, and Wi-Fi.
Social Media Bio Generator
Write platform-tuned bios for Instagram, Twitter, LinkedIn, and TikTok.
Business Plan Outline Generator
Generate a structured, investor-ready business plan outline in minutes.
Receipt Generator
Create clean, printable receipts for sales, services, and reimbursements.
Why thousands trust 7bc.site
We're not another calculator farm. Every tool here is researched, formula-checked, and explained in plain English — so the number on screen actually means something.
Formula-verified accuracy
Each calculator implements the exact formula used by CPAs, financial analysts, and the IRS — then double-checked against worked examples. We show the formula on every page so you can verify it yourself.
Editorial review process
Content is drafted, fact-checked, and edited before publishing — and re-reviewed when tax rules, accounting standards, or platform policies change. Read our editorial policy for the full workflow.
Private by design
Every calculation runs in your browser. Your salary, expenses, and client data never touch our server. No accounts, no tracking pixels on inputs, no third-party scripts reading your numbers.
Explained, not just calculated
Every tool ships with a deep-dive guide: what the metric means, how to interpret the result, common pitfalls, and real-world examples. You leave understanding the number, not just seeing it.
Mobile-first responsive
Every calculator works flawlessly on phones, tablets, and desktops. Touch-friendly inputs, no horizontal scroll, and results that reflow for any screen. Try one on your phone right now.
Always free, no catches
No paywalls. No "premium" tiers. No watermarks on generated invoices or QR codes. We run lightweight ads to keep the lights on — that's it. The tools are the product, not the upsell.
Every number has a paper trail
We don't black-box our math. On every tool page you'll find the exact formula in plain notation, the source we verified it against (IRS publications, FASB guidance, accepted accounting textbooks), and a worked example you can replicate by hand. If a number matters to your wallet, you should be able to see how it was built.