Your Free Financial Calculator Hub
Welcome to CalculatorFix.com — a focused collection of free financial calculators built for anyone who wants fast, accurate answers without needing a spreadsheet or a financial adviser. Whether you're comparing loan options, planning for retirement, or working out how much tax you owe, we have a dedicated tool built precisely for that task.
Why Use CalculatorFix?
Most general-purpose calculators force you to remember formulas. CalculatorFix removes that friction entirely. Every calculator is purpose-built with clearly labelled inputs, instant results, and plain-English explanations of how your answer was reached. No finance degree required.
All calculators run entirely in your browser using JavaScript — meaning they are fast, private (no data leaves your device), and available offline once the page has loaded.
Loans & Borrowing
Our loans and borrowing calculators cover everything from a standard loan calculator and mortgage calculator to specialist tools like the FHA loan calculator and amortization calculator. Use them to understand your true monthly cost before you sign anything.
Savings & Investment
The savings and investment calculators help you visualise how money grows over time. The compound interest calculator shows the power of reinvested returns, while tools for ROI, retirement, IRR, and bonds give investors at every level a clear picture of their returns.
Tax & Income
Understanding your take-home pay or tax liability shouldn't require an accountant. The tax and income calculators include an income tax calculator, salary calculator, take-home paycheck calculator, and tools for sales tax, VAT, and estate tax.
Budgeting & Planning
Good financial decisions start with a plan. The budgeting and planning calculators cover the budget calculator, house affordability calculator, rent vs. buy analysis, and college cost projections — giving you the numbers you need to make confident long-term choices.
Business Finance
Running a business means juggling numbers constantly. The business finance calculators help with profit margins, break-even analysis, markup pricing, payroll, depreciation, and invoice totals — all without needing a spreadsheet.
Currency & Rates
The currency and rates calculators cover APR, inflation, and interest rate calculations — useful for comparing loan offers, tracking purchasing power, and evaluating the real cost of borrowing.
Accuracy You Can Rely On
Every formula on CalculatorFix is sourced from authoritative references — financial standards bodies, peer-reviewed health guidelines, and established mathematical conventions. We review calculators regularly to ensure they remain correct as standards evolve.
Completely Free, Forever
CalculatorFix has no premium tier, no paywalled results, and no account requirements. Every calculator on this site is — and will remain — 100% free to use for everyone.