Take Control of Your Finances
Accurate paycheck, tax, loan & savings calculators built for the U.S. — get instant results with state-specific precision.
All Calculators
Accurate Pay & Finance Calculators
Paycheck Calculator
Calculate your take-home pay after federal, state, and FICA taxes. Free paycheck calculator with all 50 US states supported.
Hourly to Salary Calculator
Convert your hourly rate to annual salary with overtime. Free hourly to salary calculator with US overtime rules (1.5x after 40 hours).
Salary to Hourly Calculator
Convert your annual salary to hourly rate. Includes paid and unpaid leave adjustments. Free salary to hourly converter.
Freelance Tax Estimator
Estimate your freelance taxes including self-employment tax, federal income tax, and quarterly estimated payments. Free 1099 tax calculator.
Mortgage Payment Calculator
Calculate your monthly mortgage payment with principal, interest, taxes, and insurance. Free mortgage calculator with amortization schedule.
Car Loan Calculator
Calculate your monthly car loan payment including sales tax, trade-in value, and interest. Free auto loan calculator for new and used cars.
Solar Savings Calculator
Calculate how much you can save with solar panels. Includes federal tax credit, state incentives, and payback period. Free solar savings estimator.
Time Calculator
Free time calculator for adding durations, calculating work hours, and converting to decimal hours for payroll. Supports multiple time entries.
Why Choose CortexCalculator?
Built for accuracy, designed for trust
100% Accurate
Updated 2025 tax brackets, real formulas, and all 50 US state-specific calculations.
Always Free
No sign-up required. Use all calculators instantly, no limits.
Privacy First
Your data never leaves your browser. Zero tracking, zero data collection.