Age, date, unit conversion, and daily life calculators
11 calculators available
Calculate your exact age in years, months, days, hours, and minutes. Find the days until your next birthday.
Calculate the exact number of days, weeks, months, and years between two dates. Add or subtract days from a date.
Calculate tip amount, total bill, and split between multiple people. Supports custom tip percentages for any service.
Free discount calculator: find sale price, savings amount, and discount percentage. Find the original price from a discounted price.
Calculate how much paint you need for a room. Enter wall dimensions and number of coats to get gallons and liters needed.
Calculate flooring material needed for any room. Supports rectangular rooms, L-shaped rooms, and accounts for waste percentage.
Calculate the BTU cooling and heating capacity needed for your room or home based on size, climate, insulation, and more.
Calculate your monthly, daily, and annual electricity bill from your kWh usage, rate per unit, fixed charges, and tax.
Calculate your monthly gas bill from usage, rate per unit, fixed charges, and tax. Supports CCF, therms, MCF, kWh, and m³.
Calculate your total monthly digital expenses — internet, phone lines, streaming services, and subscriptions — plus annual cost.
Free water bill calculator: estimate your monthly water bill from usage, rate, sewer charge, and household size. Compare against average US water costs.
Everyday calculators handle the practical calculations that come up in daily life. Whether you need to calculate your exact age, figure out a restaurant tip, find the difference between two dates, or plan a home improvement project, these tools make common calculations instant and effortless.