12+ professional-grade calculators for mortgages, loans, taxes, retirement, and more. Plus free invoice maker & paystub generator for freelancers and small businesses across the USA.
Mortgage Calculator
Most Popular Tool
Monthly Payment
$2,528.27
12+
Free Calculators
100%
Free Forever
2M+
Calculations Done
0
Data Stored
We built these tools because we were tired of paywalled calculators and clunky interfaces. Here is what makes us different.
Get calculations in real-time as you type. No waiting, no refreshing, no page reloads.
All calculations happen in your browser. We never store, track, or sell your financial data.
Tailored for US financial systems — IRS tax brackets, FHA loans, 401k rules, FICA, and more.
No signups, no subscriptions, no limits. Use our tools anytime, anywhere, on any device.
The most searched financial calculators in the USA. Accurate, fast, and completely free. No account needed.
Most Popular
Estimate monthly payments, total interest, and full amortization schedule for your home loan. Compare 15-year vs 30-year terms.
See how your money grows over time with compound interest. Perfect for savings goals, investments, and APY comparisons.
Plan your retirement with 401k projections, employer match estimates, and social security integration.
Estimate your federal income tax, take-home pay, and tax brackets based on 2025 IRS rates. Includes standard deductions.
See how long it will take to pay off your credit card debt. Compare minimum payments vs accelerated payoff strategies.
Calculate EMI, total interest payable, and repayment schedule for personal, auto, or student loans with flexible terms.
Convert hourly wage to annual salary and vice versa. Includes federal tax withholding and FICA estimates for USA workers.
Calculate monthly car payments, total interest, and compare loan terms. Includes trade-in and down payment options.
Create a debt payoff strategy using avalanche or snowball method. See your debt-free date and total interest saved.
Calculate return on investment percentage and break-even point. Perfect for business decisions, side hustles, and investments.
Compare your current mortgage with refinancing options. See break-even point and lifetime savings from a lower rate.
Should you rent or buy? Compare total costs over time including home appreciation, maintenance, and opportunity cost.
We just launched two powerful tools to help freelancers, contractors, and small business owners in the USA. Create professional invoices and detailed payslips in seconds — no subscription, no watermarks, no limits.
Create professional invoices in seconds. Add your logo, line items, taxes, and download as PDF instantly. No watermarks.
Generate detailed payslips with federal deductions, taxes, and net pay. Perfect for small businesses and 1099 contractors.
12,000+ professionals use us daily
50,000+
Monthly Active Users
2 Million+
Calculations Completed
4.9/5
User Satisfaction Rating
Whether you are buying your first home, planning retirement, managing business finances, or calculating taxes — BillSwift gives you the accurate numbers you need, instantly. Every tool is designed with USA-specific rules: IRS tax brackets, FHA loan limits, 401k contribution limits, FICA rates, and state-specific calculations.
Use our mortgage calculator to estimate monthly payments, compare 15-year vs 30-year loans, and see your full amortization schedule. Perfect for first-time homebuyers and refinancers across the USA.
Plan your financial future with compound interest, ROI, and retirement calculators. See how much your 401k will be worth, when you can retire, and how much you need to save.
Create professional invoices and payslips that comply with standard US business formats. Download as PDF and send to clients instantly. Perfect for freelancers and small businesses.
BillSWift is your one-stop destination for free online financial calculators. From mortgage payments and compound interest to salary conversions and tax estimates, every tool is designed with accuracy and simplicity in mind. Our invoice maker and paystub generator help freelancers, contractors, and small business owners streamline their billing without expensive software. No signups, no subscriptions, no hidden fees — just powerful tools that work.