Finance tools built on real numbers, not guesses.

What we build

Most online calculators either hide their math or make it up. BillableWise does the opposite: every tool on this site is built on a real, cited source, whether that is a government dataset, a published methodology, or a formula you can check yourself. We would rather ship fewer tools and get the numbers right than ship a lot of tools that quietly guess.

Who we are

BillableWise is built and maintained by Muhammad Ayaz Akhtar (LinkedIn), a software engineer, not a financial advisor. That's deliberate: instead of asking you to trust a stranger's financial judgment, every calculator on this site is built directly on a named, checkable primary source, USDA, the Federal Reserve, the Bureau of Labor Statistics, or similar, so you can verify the numbers yourself rather than take our word for them. We do not sell financial products, and we are not a bank, lender, or advisory firm. We build tools, not advice.

Our approach

Every calculator on BillableWise follows the same rules:

• Real data. Figures come from cited, authoritative sources, not invented averages.
• Verified math. Every worked example is checked against the calculator's own formula, not computed by hand.
• No interest-based tools. BillableWise deliberately avoids calculators built around interest or debt growth, such as loans, mortgages, or compound-interest projections. See our Terms of Service for what that means in practice.
• Free, no account required. Every tool runs in your browser. Your inputs are not sent to our servers.

Not financial advice

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.

Get in touch

Have feedback, found an error, or want a tool built? Use the contact page. We read every message.