Calculators

Age Calculator

Calculate your exact age in years, months, and days instantly. Find out how old you are and when your next birthday is with our free online age calculator.

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Percentage Calculator

Calculate percentages quickly and easily. Find X% of Y, what percent X is of Y, or the percentage change between two numbers.

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Date Calculator

Calculate the number of days, weeks, and months between two dates or add and subtract days from any date. Free and instant.

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Time Calculator

Add or subtract hours, minutes, and seconds or convert between time units instantly. Free online time calculator.

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Discount Calculator

Calculate the final price after a discount and see how much you save. Enter the original price and discount percentage to get instant results.

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Tip Calculator & Bill Splitter

Calculate the tip and split a restaurant bill between any number of people. Tip presets, per-person totals, and the full amount — instantly.

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GPA Calculator

Calculate your GPA on a 4.0 scale from your course grades and credit hours. Add each class, pick a letter grade, and get your weighted GPA instantly.

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Final Grade Calculator

Find out exactly what score you need on your final exam to reach your target grade. Enter your current grade, goal, and the final's weight.

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Fuel Cost Calculator

Estimate the fuel cost of any trip. Enter distance, your vehicle's efficiency, and fuel price — in US (MPG) or metric (L/100km) units.

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Random Number Generator

Generate random numbers in any range, with or without repeats. Uses your browser's secure random generator. Pick one number or a whole list.

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