Free calculators that do the math for you
Freelancer rates, self-employment tax, debt payoff plans, and everyday estimators — built to run instantly in your browser with no signup, no fees, and no accounts. Type in your numbers, get a straight answer.
Popular tools
Every tool works the moment the page loads — your numbers never leave your device.
Freelancer Hourly Rate Calculator
Work backward from the income you want to keep — after expenses and taxes — to the hourly rate you need to charge.
Debt PayoffDebt Snowball vs Avalanche Calculator
Compare both payoff strategies side by side on your real balances and see which one saves you more interest.
Freelancer FinanceSelf-Employment Tax Estimator
Estimate your self-employment tax plus federal and state income tax so April never surprises you again.
Everyday EstimatorsRecipe Scaler
Paste in a recipe, change the servings, and get every ingredient re-measured in cook-friendly fractions.
Browse by category
New tools are added regularly. Each category hub collects everything in that topic.
Freelancer & Self-Employed Finance
Rate setting, tax estimates, and money math for people who invoice instead of getting a paycheck.
CategoryDebt Payoff Calculators
Payoff timelines, strategy comparisons, and extra-payment math for getting out of debt faster.
CategoryEveryday Estimators
Practical household and project math — recipes, paint, moving costs — done in seconds.
Why TallyUp exists
Most online calculators fall into two traps: they're either buried under popups and email gates, or they're so bare-bones they give you a number with no explanation of where it came from. TallyUp is built on a different idea — that a calculator should feel like a knowledgeable friend doing the math on a napkin, then walking you through what the numbers mean.
That's why every tool page pairs a working calculator with a plain-English explanation: what the tool does, the formula behind it, and a worked example with real numbers so you can sanity-check the result yourself. No jargon without definitions, no assumptions hidden in footnotes.
And your privacy matters here. Every calculation happens in your browser, on your device. We don't ask for your name, your email, or your account details, because a calculator doesn't need any of them. Read more on our About page or see how we handle data in our Privacy Policy.