Budgeting
Grocery Budget CalculatorEstimate a realistic monthly grocery budget for your household, based on official USDA Food Plans data.
Open calculatorFinance calculators & tools
Wise with money. Built on real numbers.
BillableWise is a free hub of finance calculators for everyday money decisions. No account, no spreadsheets, and no invented formulas, every tool here is built on a real, cited source.
Explore the tools
More calculators are on the way. Here is what is live now.
Budgeting
Rent Budget CalculatorWork out how much rent you can afford from your income, based on the federal housing affordability standard.
Open calculatorBusiness
LinkedIn Ad Budget CalculatorEstimate a realistic monthly LinkedIn ads budget from your click or impression goals, based on real B2B ad-cost benchmarks.
Open calculatorLife Events
Wedding Budget CalculatorEstimate a realistic wedding budget from your guest count, based on The Knot's 2026 Real Weddings Study.
Open calculatorHousehold
Rent Split CalculatorSplit rent fairly between roommates by equal share, income, or room size.
Open calculatorSavings
Emergency Fund CalculatorFind your emergency fund target from your monthly expenses, based on Federal Reserve data and common financial guidance.
Open calculatorBusiness
Payroll Cost CalculatorFind the true cost of an employee beyond salary, including employer payroll taxes and benefits.
Open calculatorWhy the numbers are different here
Most calculator sites guess. We start from a real, checkable source for every tool.
Every tool is built on a cited, authoritative source, such as official government data, not invented averages.
Every worked example is checked against the calculator's own formula, not computed by hand and hoped to be right.
Specific claims link straight to their source with a numbered citation, not just a References list buried at the bottom.
Frequently asked questions
What is BillableWise?
BillableWise is a free hub of finance calculators for everyday money decisions. Every tool is built on a real, cited source, a government dataset, a published methodology, or a formula you can check yourself, instead of an invented rule of thumb.
Are BillableWise’s calculators free to use?
Yes. Every calculator is completely free, with no account or signup required. Your inputs run in your browser and are not sent to our servers.
What data sources does BillableWise use?
Each calculator cites its source directly in its References section, for example USDA Food Plans, Federal Reserve survey data, or Bureau of Labor Statistics figures, so you can verify the numbers yourself instead of taking our word for them.
Is BillableWise financial advice?
No. BillableWise gives you numbers to work from, not personalized financial, tax, or legal advice. For decisions that matter, talk to a qualified professional. See our Terms of Service for the full disclaimer.
Who built BillableWise?
BillableWise is built and maintained by Muhammad Ayaz Akhtar, a software engineer, not a financial advisor. That’s why every calculator is built directly on named, checkable primary sources rather than personal judgment calls.
Ready to get a real number?
Pick a calculator, enter your numbers, and get a clear answer built on a source you can check yourself.