Run the numbers on mortgages, taxes, investing, and more in seconds.
ToolsHelm gives you instant, explainable calculations for big financial decisions. No logins, no forms—just clean inputs, clear results, and fast answers.
Explore calculators by category
Start with the area you care about most; you can always switch calculators in a click.
Mortgage & Loans
Understand payments, refinancing, EMIs, and debt-to-income ratios.
Personal Finance
Plan savings, investments, retirement, and track your net worth.
Tax & Salary
Estimate federal and state tax, and see your take-home pay.
Real Estate & Business
Compare renting vs buying and analyze profit, ROI, and break-even.
Free Online Financial Calculators for US Users
ToolsHelm brings together mortgage, loan, savings, investment, tax, salary, real estate, and business calculators in one place so you can run the numbers before you commit to big decisions.
Whether you are buying a home, refinancing, planning retirement, or checking your paycheck, each calculator is designed to feel fast and simple. You can adjust inputs in real time, compare scenarios side by side, and save or share images of your results with your team, advisor, or family.
Start with the Mortgage Payment Calculator to understand monthly payments, explore Compound Interest to see how savings grow, or use the Salary Tax Calculator to estimate take-home pay. Every tool is free to use and built specifically for US-focused financial planning.