About SimplyCalcs
SimplyCalcs is a free collection of online calculators for the money math that comes up in everyday life. Whether you are checking a paycheck, comparing mortgage offers, or working out what a loan will really cost, you get a clear answer in seconds — no account, no download, and no waiting on a server.
What you can work out
The site covers the calculators people reach for most: take-home pay and paycheck estimates, mortgage payments and home affordability, personal and auto loans, compound interest and savings growth, and sales tax — alongside other everyday and financial tools. Each calculator asks for only the inputs it needs and updates the moment you type, so you can try different numbers — a bigger down payment, a shorter term, an extra monthly payment — and watch the result shift without reloading the page.
How the numbers are worked out
Every calculator runs entirely in your browser using the same standard formulas a lender or accountant would use: amortization schedules for loans and mortgages, periodic compounding for interest and savings, and current tax rates where they apply. Because the math happens on your device, the tools stay fast on a phone with a weak signal, and nothing you enter has to leave the page to get an answer.
Results are estimates for education and planning, produced with standard formulas from the numbers you provide. They are not professional financial, tax, or legal advice — for decisions that carry real weight, confirm the figures with a qualified advisor.
Who runs SimplyCalcs
SimplyCalcs is built and operated by Express Services Group, a company based in Fresno, California. We maintain the calculators, review the formulas behind them, and fix issues when readers flag them. Questions, corrections, or a calculator you wish existed? Email support@expressservicesgroup.com and a real person will read it.
How it stays free
There are no subscriptions, usage limits, or signup walls, and every calculator is open to everyone. A few modest display ads on the calculator pages cover the cost of hosting and upkeep — that is what keeps the whole site free to use.