All calculators and converters
Every tool, one place.
Find the right calculator or converter, then get straight to the answer.
Currency.
7 toolsCurrency Converter
Convert between world currencies using dated exchange rates.
EUR to USD Converter
Convert euros to US dollars with a live exchange rate.
USD to ILS (NIS) Converter
Convert US dollars to Israeli new shekels with a live rate.
TWD to USD Converter
Convert New Taiwan dollars to US dollars with a live rate.
THB to USD Converter
Convert Thai baht to US dollars, from 1 baht to 10,000 baht.
CNY to USD Converter
Convert Chinese yuan (renminbi) to US dollars with a live rate.
USD to RUB Converter
Convert US dollars to Russian rubles with a live exchange rate.
Unit conversion.
25 toolsUnit Converter
Convert length, area, volume, speed, energy, pressure and more.
Weight Converter
Convert mass between kilograms, pounds, ounces, stones and more.
Temperature Converter
Convert Celsius, Fahrenheit and Kelvin temperatures.
Length Converter
Convert metric and imperial lengths accurately.
Area Converter
Convert square units, acres and hectares.
Volume Converter
Convert liters, gallons, cups and other volume units.
Speed Converter
Convert km/h, mph, m/s, ft/s and knots.
Data Converter
Convert bits, bytes and decimal storage units.
Time Converter
Convert seconds, minutes, hours, days and years.
Energy Converter
Convert joules, calories, watt-hours, kWh and BTU.
Power Converter
Convert watts, kilowatts, horsepower and BTU/hour.
Pressure Converter
Convert pascals, bars, atmospheres, psi and mmHg.
Force Converter
Convert newtons, kilonewtons, pound-force and kilogram-force.
Angle Converter
Convert degrees, radians, gradians, arcminutes and arcseconds.
Fuel Consumption Converter
Convert L/100km, km/L and miles per gallon.
Km to Miles Converter
Convert kilometers to miles, with a table from 1 km to 500 km.
KPH to MPH Converter
Convert kilometers per hour to miles per hour, and mph to km/h.
Watts to kWh Calculator
Turn watts and hours of use into kilowatt-hours and energy cost.
Kg to Lbs Converter
Convert kilograms to pounds, with a chart from 1 kg to 200 kg.
Lbs to Kg Converter
Convert pounds to kilograms, with a chart from 1 lb to 400 lb.
Cm to Inches Converter
Convert centimeters to inches, and heights in cm to feet and inches.
Inches to Cm Converter
Convert inches to centimeters, and feet and inches to cm.
Miles to Km Converter
Convert miles to kilometers, from 1 mile to a marathon and beyond.
Celsius to Fahrenheit Converter
Convert °C to °F, with a chart for weather, body and oven temperatures.
Fahrenheit to Celsius Converter
Convert °F to °C, with a chart for weather, fever and oven temperatures.
Date & time.
21 toolsAge Calculator
Find your exact age in years, months, days and more.
Date Calculator
Date difference, add or subtract days, business days and countdown.
Time Zone Converter
See the same instant in any world time zone, with a world clock.
UTC to EST Converter
Convert UTC to Eastern Time (EST or EDT) for any date and time.
CST to EST Converter
Convert Central Time to Eastern Time: always one hour ahead.
Military Time Converter
Convert military time to 12-hour time and back, with a full chart.
Hours Worked Calculator
Add up hours worked from start and end times, minus breaks.
Days From Today Calculator
Find the date any number of days or business days from today or another date.
Christmas Countdown
A live countdown to Christmas Day in days, hours, minutes and seconds.
Thanksgiving Countdown
A live countdown to US Thanksgiving, the fourth Thursday in November.
Halloween Countdown
A live countdown to Halloween, 31 October, in days, hours and minutes.
New Year Countdown
A live countdown to midnight on 1 January in days, hours, minutes and seconds.
Valentine’s Day Countdown
A live countdown to 14 February in days, hours, minutes and seconds.
US Time Zones
Every US time zone with live clocks, UTC offsets and states.
30 Days From Today
The date 30 days from today, or 30 business days, with the day of the week.
60 Days From Today
The date 60 days from today, or 60 business days, with the day of the week.
180 Days From Today
The date 180 days from today, about 6 months ahead, with the day of the week.
PST to EST Converter
Convert Pacific Time to Eastern Time: always three hours ahead.
EST to PST Converter
Convert Eastern Time to Pacific Time: always three hours behind.
Summer Countdown
A live countdown to the first day of summer, the June solstice.
Spring Countdown
A live countdown to the first day of spring, the March equinox.
Math.
7 toolsPercentage Calculator
Calculate percentages, increases, decreases and differences.
Percentage Increase Calculator
Find the percent increase or decrease from an old value to a new one.
Discount Calculator
Find the final price after a discount, or reverse to the original.
Ratio Calculator
Simplify ratios of two numbers to their lowest form.
Average Calculator
Find the arithmetic mean of a list of values.
Aspect Ratio Calculator
Find an image or screen aspect ratio and resize without distortion.
Batting Average Calculator
Calculate a baseball or softball batting average from hits and at-bats.
Finance.
9 toolsLoan Calculator
Estimate monthly payments and total interest on a loan.
Compound Interest Calculator
Estimate future value with regular compounding.
Tip Calculator
Split a bill and tip between people.
Home Loan Calculator
Estimate your monthly mortgage payment with taxes and insurance.
Car Loan Calculator
Calculate your car loan payment, total interest and total cost.
Hourly to Salary Calculator
Turn an hourly wage into yearly, monthly, weekly and daily pay.
No Tax on Tips Calculator
Estimate the federal deduction for qualified tips (tax years 2025-2028).
VAT Calculator
Add or remove value-added tax from an amount.
Salary to Hourly Calculator
Turn a yearly salary into an hourly wage, plus monthly and weekly pay.
Health & fitness.
4 toolsTDEE Calculator
Estimate the calories you burn each day from your BMR and activity level.
Steps to Miles Calculator
Turn a step count into miles and kilometers from your height or step length.
Dog Age Calculator
Convert dog years to human years by size, from the veterinary age chart.
Cat Age Calculator
Convert cat years to human years and find your cat’s life stage.
Fuel & cars.
2 toolsReference data.
2 toolsHow to choose the right tool
Every tool here answers one kind of question and shows the formula it uses, so you can check any result by hand. If you are converting a quantity from one unit to another, start with the unit conversion tools: the general unit converter covers 14 categories, and dedicated pages such as km to miles or kph to mph add full reference tables for the most searched values.
For money, the currency converter uses live Coinbase rates and the popular pair pages add amount tables at the dated European Central Bank reference rate, while the finance calculators handle loans, mortgages, car payments, compound interest, salary, tips and VAT. Date and time tools count the days between dates, exact ages, hours worked and the time in any US or world time zone. The reference pages rank US states and every country by population using official Census Bureau and World Bank data.
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