About How Much Per Month
howmuchpermonth.com exists because every financial decision comes down to the same question: "What does this actually cost me per month?"
Whether you are evaluating a mortgage, negotiating a salary, budgeting for a new car, or just trying to figure out what that daily coffee habit really costs you over a year, the math is the same. We do that math for you, instantly, with no sign-ups, no accounts, and no tracking.
What We Do
We build simple, accurate financial calculators. Each calculator focuses on one thing and does it well. You enter your numbers, you get your answer. No walls of marketing copy. No pushy upsells. Just the math.
Our calculators cover:
- Loan payments — Mortgage, auto loans, student loans, credit card payoff
- Income conversions — Annual salary to monthly, hourly rate to monthly, freelance rate planning
- Savings and investing — Compound interest, savings goals, emergency fund timelines
- Cost of living — Inflation impact, lifestyle creep tracking, subscription audits
- Life events — Wedding budgets, baby costs, pet ownership expenses
How It Works
Every calculator on this site runs entirely in your browser. Your numbers never leave your device. There is no server processing your financial data, no database storing your inputs, and no account to create. You type, we calculate, you decide.
The site is statically generated using Astro and hosted on Cloudflare Pages, which means pages load in under a second from anywhere in the world. No JavaScript frameworks, no build-time bloat, no third-party dependencies slowing things down.
Why We Built This
Most financial calculator sites are bloated with ads, pop-ups, and confusing interfaces. We wanted something different: a clean, fast, reliable tool that anyone can use without friction. The entire site is black and white on purpose. No distracting gradients, no animated charts, no "premium" tiers. Just calculators that work.
Financial Disclaimer
These calculators are for informational and educational purposes only. They are not financial advice. The results are estimates based on the inputs you provide and standard financial formulas. Real-world results may differ due to taxes, fees, insurance, market conditions, and other factors. Always consult a qualified financial professional before making major financial decisions.
Contact
Have a calculator idea or found a bug? Reach out at hello@howmuchpermonth.com. We read everything.