About Calculatree
Calculatree is a free collection of fast, clean calculators for the decisions that matter — mortgages and loans, taxes and savings, property, and the everyday math that comes up in real life. There is no sign-up and nothing to install: open a calculator and get an answer.
Calculators that show their work
Most online calculators hand you a single number and leave you guessing. Calculatree is built around a simple idea: show the work. Alongside each result we explain the formula, break down where the number comes from, and answer the common questions — so you understand the answer, not just read it. Every calculation runs instantly in your browser as you type.
Free and ad-supported — and privacy-respecting
Calculatree is free because it’s supported by advertising. We take privacy seriously: advertising and analytics cookies are denied by default, and nothing loads until you choose to accept through our consent banner. You can change your choice at any time using “Cookie settings” in the footer. The values you enter into a calculator never leave your device. See our Privacy Policy for the full details.
Accuracy & methodology
We work hard to get the math right — every calculator is backed by tests that verify its formulas. That said, our calculators provide estimates for general information only and are not a substitute for professional financial, legal, tax, or medical advice. Real-world results depend on your specific circumstances and on rules that change over time, so always confirm important decisions with a qualified professional. See our Terms of Service for more.
Independently built
Calculatree is independently built and operated from Canada. It is not affiliated with any bank, lender, government agency, or other institution.
Get in touch
Spotted a bug, have a calculator you’d like to see, or just want to say hello? We read every message — email us at hello@calculatree.app or visit our contact page.