From health to finance, get instant answers with 9 free calculators. No sign-up, no install — just open and calculate.
Most people reach for a calculator several times a week, whether it is splitting a restaurant bill, checking a discount, or figuring out an electricity bill. The problem is that many online calculators are buried behind ads, pop-ups, or unnecessary sign-up walls. We built this collection to be the opposite: open a page, enter your numbers, and get your answer immediately. Every tool runs entirely in your browser, which means your data stays on your device and results appear without any loading delay.
Keeping tabs on your well-being does not have to involve expensive apps or complex spreadsheets. The BMI Calculator gives you a quick Body Mass Index reading using either metric or imperial units, along with a clear explanation of what the number means. The Age Calculator tells you your exact age down to the day, which is surprisingly handy for official forms, visa applications, and birthday countdowns. Meanwhile, the Screen Time Calculator helps you visualise just how many hours you spend in front of screens each week and year — a useful reality check when you are trying to build healthier daily habits.
Financial math comes up constantly, and even small rounding errors add up over time. The Percentage Calculator handles every common scenario: finding a percentage of a number, calculating percentage change, and working out what percentage one value is of another. When dining out, the Tip Calculator removes the guesswork by computing the tip and splitting the total between any number of people. The Tax Calculator lets you add or remove sales tax, VAT, or GST from any amount — perfect for freelancers, shoppers, and small-business owners. Need to convert prices across borders? The Currency Converter pulls daily exchange rates for over 150 currencies. The Electricity Cost Calculator estimates what any appliance costs to run so you can spot energy-hungry devices and save money. And if you have ever wondered what that hour-long meeting really costs your company, the Meeting Cost Calculator puts a real dollar figure on every minute.
Calculators are just one slice of what fixnow.tools offers. If you sell products online, our seller tools include fee calculators, keyword research, and listing optimisers for popular marketplaces. For hands-on projects around the home or workshop, the DIY and craft tools cover paint, tile, fabric, and more. Every tool follows the same philosophy: free to use, fast to load, and respectful of your privacy.