Everyday Calculators

Tip, age, date, GPA, and other calculators for everyday situations.

• Tip CalculatorCalculate the tip and split the bill evenly between any number of people.
• Age CalculatorCalculate your exact age in years, months, and days from your date of birth.
• Date CalculatorCalculate the number of days between two dates, or add/subtract days from a date.
• Time CalculatorAdd or subtract time durations in hours, minutes, and seconds.
• GPA CalculatorCalculate your grade point average from course grades and credit hours.
• Discount CalculatorCalculate the sale price and amount saved for any discount percentage.
• Unit ConverterConvert between common length, weight, and temperature units instantly.
• Hours CalculatorCalculate hours worked between a start and end time, including breaks.
• Grade CalculatorCalculate a weighted grade, or the score needed on remaining work.
• Concrete CalculatorCalculate how much concrete you need for a slab, in cubic yards and bags.
• Subnet CalculatorCalculate the network address, broadcast address, and host range for a subnet.
• Password GeneratorGenerate a strong, random password using a cryptographically secure source.
• Parlay CalculatorCalculate combined odds and payout for a multi-leg parlay bet.
• Word CounterCount words, characters, sentences, and paragraphs in any text instantly.
• Day of the Week CalculatorFind out what day of the week any date falls on.
• Dog Age CalculatorConvert your dog's age into human years based on its size.
• Cat Age CalculatorConvert your cat's age into human years.
• Square Footage CalculatorCalculate the total square footage of a room or home from its length and width.
• Business Days CalculatorCount business days between two dates, or find a date a number of business days away.
• Pro Rata CalculatorProrate rent, salary, or any recurring amount for a partial period.
• Mulch CalculatorCalculate how much mulch you need in cubic feet, cubic yards, and bags.
• Electricity Cost CalculatorEstimate the electricity cost of running an appliance or device.