About QuickCalc Hub
QuickCalc Hub is a set of free calculators and converters for everyday questions about money, health, dates, units and writing. You do not need an account, and the calculations run in your browser.
What you can do here
- Convert length, weight, volume, speed and temperature.
- Work out percentages, shares and the change between two values.
- Add a tip to a bill and split it between people.
- Estimate monthly payments on a fixed-rate loan.
- See how savings grow with compound interest and monthly deposits.
- Turn an hourly rate into weekly, monthly and annual pay.
- Calculate your BMI and the healthy weight range for your height.
- Count the days between two dates, or work out your exact age.
- Count words, characters, sentences and reading time in a text.
- Generate random passwords that are never sent or saved.
How the calculators are checked
Each calculator shows its formula and a worked example, so you can compare the result with your own working. Unit conversions use exact international or US customary definitions. Loan payments use the standard formula for a fixed-rate loan. BMI uses weight divided by height squared, with the adult categories published by the World Health Organization.
If you find an error, please tell us through the contact page. We correct mistakes as soon as we can confirm them.
What the results are not
The results are estimates for general information. QuickCalc Hub does not give medical, financial, tax or legal advice. BMI does not measure body fat or muscle. Loan figures leave out fees, insurance and taxes. Check important numbers with a professional or with your lender, employer or tax office.
How the site is paid for
The site is free to use. It is supported by Google AdSense advertising. In the European Economic Area, the United Kingdom and Switzerland, personalized ads are only shown after you agree in Google’s cookie message, as explained in the cookie policy. We do not sell your personal data.
Who runs it
QuickCalc Hub is run by calcfas, based at Barriada Diamantino García, 1, 41610 Paradas (Sevilla), Spain. The full details are in the legal notice, and the way we handle personal data is in the privacy policy.