Everyday Calculators
Free tools for daily life — check your BMI, find your exact age, estimate daily calories, and solve percentage problems in seconds.
BMI Calculator
Calculate your Body Mass Index using metric or imperial measurements. See your NHS weight category and health guidance.
Calculate BMIAge Calculator
Enter your date of birth to find your exact age in years, months, and days. Includes total days lived and next birthday countdown.
Calculate ageCalorie Calculator
Find your Total Daily Energy Expenditure (TDEE) and recommended daily calorie intake based on your age, weight, height, and activity level.
Calculate caloriesPercentage Calculator
Three modes: find X% of Y, what percentage X is of Y, and percentage change between two numbers. Fast, simple results.
Calculate percentagesQuick Answers for Everyday Questions
Some calculations come up again and again in daily life. Whether you are checking if your weight is in a healthy range, working out your exact age for a form, figuring out how many calories you need, or just trying to calculate a tip or discount, our everyday tools give you instant answers without any fuss.
Every calculator runs entirely in your browser — no data is sent to any server, no account is needed, and the results appear immediately. Bookmark this page and come back whenever you need a quick answer.