Topic
Everyday math, time, and utility calculators
Quick answers for percentages, fractions, dates, tips, conversions, grades, trips, projects, and small-business math.
Calculators
- Currency ConverterConvert amounts between major currencies with daily European Central Bank-based reference rates.
- Tip Calculator and Bill SplitCalculate a restaurant tip, total bill, and each person’s share with this fast tip and bill split calculator.
- Age CalculatorCalculate exact age in years, months, and days, total days lived, and the date of the next birthday.
- Percentage CalculatorCalculate a percentage of a number, what percent one value is of another, and percentage increase or decrease.
- GPA CalculatorCalculate a standard unweighted GPA from course grades and credit hours, including quality points and total credits.
- Unit ConverterConvert common length, distance, weight, temperature, cooking volume, shoe size, and clothing size units.
- Date CalculatorFind the number of days between two dates or add and subtract calendar days from any starting date.
- Scientific CalculatorUse a free scientific calculator for arithmetic, trigonometry, logarithms, roots, powers, constants, and inverse calculations.
- Internet Speed TestTest your internet speed in your browser: real download Mbps, upload Mbps, and ping, with plain-English verdicts for streaming, gaming, and video calls.
- Can My PC Run It? Game RequirementsCheck official minimum and recommended PC specs (CPU, GPU, RAM, storage) for Fortnite, Valorant, GTA V, Minecraft, and more popular games.
- Final Grade CalculatorCalculate the final exam score you need to reach your target course grade, or see if the target is out of reach.
- Profit Margin CalculatorCalculate profit, profit margin, and markup from cost and sale price, with a clear margin vs markup explainer.
- Fuel Cost CalculatorEstimate road trip fuel cost from distance, fuel efficiency, and gas price, with one-way or round-trip options.
- Concrete CalculatorCalculate cubic yards of concrete for a slab or footing, plus 60 and 80 lb bag counts with a waste factor.
- Is It Down? Website Status CheckerCheck if any website is down right now, plus one-tap status tests for Google, YouTube, Amazon and more, with response times.
- Fraction CalculatorAdd, subtract, multiply, and divide fractions with step-by-step simplification and decimal answers.
- Break-Even CalculatorFind how many units you must sell to break even from fixed costs, price, and variable cost per unit.