Every dollar question, answered with a calculator.
Most money questions have a precise answer hiding behind a formula: what a salary is per hour, how long a debt will take, what a dollar from 1985 buys today. Dollars World turns those formulas into 63 fast, free calculators, built on official data and explained in plain English.
What we believe
- Show the working. Every calculator explains its formula, walks through an example and lists its sources.
- Your numbers are yours. Calculations run in your browser. We don't ask you to sign up to see a result.
- Plain English beats jargon. If a term needs explaining, we explain it.
- We don't give personal advice. We help you understand the numbers so you can make your own decisions, or have a better conversation with a professional.
Who runs it
Dollars World is an independent website. Each calculator is reviewed by The Dollars World team before it goes live and again when its data or the rules behind it change. Read our editorial policy for how that works.
Dollars World (dollarsworld.com) is an online calculator website. It is not affiliated with Dollar World discount stores or with survey and rewards sites that have similar names.
How we make money
The calculators are free. We plan to earn from advertising, from clearly labeled partner offers (for example a savings account shown under the savings calculator), and from the Money Toolkit spreadsheets. Partner offers never change a calculator's results. See our disclosures.
Get in touch
Spotted an error, or want a calculator we don't have yet? Contact us. We read everything.