Simple tools, honest answers
CalcOrchard is a growing collection of 62+ free calculators and 43+ in-depth guides for people who want quick, accurate answers to real-world questions — without the friction of accounts, ads that interrupt your workflow, or cookie banners the size of a novel.
What we believe
Every calculator here follows the same principles: it loads fast, works on any device, and gives you a clear answer plus enough explanation to actually understand it. We'd rather teach you the formula than hide it.
What you'll find here
- Finance calculators — compound interest, loans, mortgages, retirement, ROI, savings goals, and more.
- Everyday tools — tips, discounts, sales tax, unit and currency conversion, dates, and passwords.
- Health calculators — BMI, calorie/TDEE, sleep cycles, water intake, running pace.
- Math tools — percentages, averages, fractions, scientific notation.
- In-depth guides — plain-English explainers of how compound interest actually works, what a good mortgage rate looks like, how to negotiate a salary, and dozens more.
Our editorial standards
Every tool and article is written to be genuinely useful, not just to rank in search results. We hold ourselves to three standards:
- Accurate. Every calculator is tested against multiple worked examples. Every article cites its sources for figures. We fix errors quickly when we find them.
- Practical. If you can't act on the information, we haven't done our job. Articles include specific numbers, real formulas, and step-by-step guidance.
- Honest. When something is complicated (like retirement planning), we don't pretend it's simple. When something is simple (like tipping math), we don't pad it out with fluff.
Privacy first
Every calculator runs entirely in your browser. The numbers you type never touch a server and are never stored. We don't require accounts. We don't use analytics services that track individuals. See our Privacy Policy for full details.
How this is funded
CalcOrchard is free to use. To keep the lights on, we display unobtrusive display ads on some pages (via Google AdSense) and may recommend relevant financial products in the future. Our editorial content is independent — no advertiser influences the recommendations or ratings in our articles.
Who's behind it
CalcOrchard is an independent project focused on doing one thing well: making the calculations behind real decisions easier to understand. The tools and articles are researched and written with care, using primary sources (BLS, IRS, Federal Reserve, peer-reviewed research) where applicable.
Get in touch
Found an error? Want a calculator we don't have? Have feedback? We'd love to hear from you — see our contact page for the best way to reach us.
CalcOrchard provides educational tools and general information. The calculators here estimate results based on the numbers you enter and the assumptions built in — they are not a substitute for personalised financial, medical, legal, or professional advice.