Free online calculators
Fast, free tools with no sign-up, built for everyday calculations.
Merge PDF
Combine several PDF files into a single document, in the order you choose.
Split PDF
Split a PDF into two separate files at the page you choose.
Compress PDF
Reduce a PDF's size by removing metadata and optimizing its internal structure.
PDF to JPG
Convert every page of a PDF into a separate JPG image.
Word to PDF
Convert a Word document (.docx) to PDF right in your browser.
PDF to Word
Extract a PDF's text and turn it into an editable Word (.docx) document.
Excel to PDF
Convert an Excel spreadsheet (.xlsx) to PDF, with each tab as a table.
PDF to Excel
Extract a PDF's text and organize it into rows and columns inside an Excel (.xlsx) file.
PowerPoint to PDF
Extract the text from a PowerPoint presentation (.pptx) and turn it into a PDF, one slide per page.
PDF to PowerPoint
Convert every PDF page into an image slide inside a PowerPoint (.pptx) presentation.
JPG to PDF
Convert one or more images (JPG or PNG) into a single PDF document.
PDF to text
Extract all the text from a PDF and download it as a plain text (.txt) file.
Images
Compress JPG
Shrink a JPG photo by choosing how much compression to apply.
Compress PNG
Shrink a PNG by reducing how many colours its palette holds.
Compress WebP
Shrink a WebP image by choosing its compression quality.
JPG to WebP
Convert JPG photos to WebP so your site loads faster.
PNG to WebP
Convert PNG images to WebP while keeping transparency.
WebP to JPG
Convert WebP images to JPG so any program can open them.
Resize image
Change the pixel width and height of an image without distorting it.
Change image resolution (DPI)
Set the DPI of an image and control its real printed size.
Crop image
Drag a selection over the image and crop it to that rectangle.
Convert image
Convert between JPG, PNG and WebP by picking the output format.
Favicon generator
Build every favicon size and the .ico file from one image.
Image to Base64
Turn an image into a Base64 string or a ready-to-paste data URI.
Image colour picker
Click anywhere on an image and read that pixel in HEX, RGB and HSL.
Extract colours from an image
Get the dominant colour palette of any photograph.
OG image generator
Create a 1200 × 630 px Open Graph image with your title and colours.
Health
BMI Calculator
Calculate your body mass index from your weight and height.
Calorie Calculator (TDEE)
Calculate your basal metabolic rate (BMR) and total daily energy expenditure (TDEE).
Pregnancy due date calculator
Calculate your due date and gestational age from your last menstrual period.
Body fat calculator (Navy method)
Estimate your body fat percentage from neck, waist (and hip) measurements using the US Navy method.
Macro calculator
Calculate your daily protein, carb and fat grams from your target calories.
Finance
Compound interest calculator
Calculate how much your investment will grow with regular contributions and an annual interest rate.
Mortgage calculator
Calculate your monthly mortgage payment, the principal-interest split and the total cost of the loan, with an amortization chart.
ROI calculator
Calculate return on investment (ROI) from the initial investment and the profit obtained.
Currency Converter
Convert an amount between currencies using the exchange rate you enter.
Simple Interest Calculator
Calculate the interest earned and the total amount with simple interest.
Rule of 72 Calculator
Calculate how many years it takes to double an investment based on its annual interest rate.
Conversions
Unit converter
Convert between units of length, weight, temperature, volume and speed.
Time Zone Converter
Convert a time between two time zones by entering the time difference.
Running pace calculator
Calculate your pace in min/km and min/mile, and your average speed, from distance and time.
Fuel cost calculator
Calculate the fuel needed and the cost of a trip from fuel consumption, distance and fuel price.
Kg to lb converter
Convert kilograms to pounds and pounds to kilograms instantly.
Cm to inches converter
Convert centimeters to inches and inches to centimeters instantly.
Celsius to Fahrenheit converter
Convert Celsius to Fahrenheit and Fahrenheit to Celsius instantly.
Km to miles converter
Convert kilometers to miles and miles to kilometers instantly.
Liters to gallons converter
Convert liters to gallons and gallons to liters instantly.
Meters to feet converter
Convert meters to feet and feet to meters instantly.
MB to GB converter
Convert megabytes to gigabytes and gigabytes to megabytes instantly.
Mbps to MB/s converter
Convert megabits per second (Mbps) to megabytes per second (MB/s) and back.
Math
Percentage calculator
Find the % of an amount, what % one number is of another, or the percentage change between two values.
Discount calculator
Calculate the final price and how much you save when applying a discount.
Rule of Three Calculator
Calculate direct or inverse proportions between three known values and one unknown.
Fraction Calculator
Add, subtract, multiply or divide two fractions and get the simplified result.
Weighted Average Calculator
Calculate the weighted average of up to four values with their respective weights.
Successive Discounts Calculator
Calculate the final price when applying several successive discounts to the same price.
GCF and LCM calculator
Calculate the greatest common factor (GCF) and least common multiple (LCM) of two numbers.
Statistics calculator (mean, median, mode)
Calculate the mean, median, mode, range and standard deviation of a set of numbers.
QR Codes
URL QR code
Generate a QR code that opens a web page when scanned.
WiFi QR code
Generate a QR code that automatically connects to a WiFi network.
WhatsApp QR code
Generate a QR code that opens a WhatsApp chat with a number.
Instagram QR code
Generate a QR code that opens an Instagram profile.
Facebook QR code
Generate a QR code that opens a Facebook page or profile.
YouTube QR code
Generate a QR code that opens a YouTube video or channel.
Email QR code
Generate a QR code that opens a new email with recipient, subject and body.
Phone QR code
Generate a QR code that starts a call to a phone number.
Location QR code
Generate a QR code that opens a point on the map.
Text QR code
Generate a QR code with any plain text.
Contact card (vCard) QR code
Generate a QR code that saves a contact to the address book.
PDF QR code
Generate a QR code that links to a PDF document.
Time
Age calculator
Calculate your exact age in years, months and days from your date of birth.
Days between dates calculator
Calculate the number of days, weeks and months between two dates.
Time calculator
Add or subtract hours, minutes and seconds easily.
Add or Subtract Days to a Date
Calculate the resulting date after adding or subtracting days to a starting date.
Work hours calculator
Calculate total hours worked from clock-in time, clock-out time and break duration.
Timers
Online stopwatch
Free stopwatch with lap timing, no downloads.
Countdown timer
Customizable minutes-and-seconds countdown with a sound alert.
Pomodoro timer
Configurable work/break cycles using the Pomodoro technique.
5-minute timer
Fixed 5-minute countdown, no setup needed.
10-minute timer
Fixed 10-minute countdown, no setup needed.
30-minute timer
Fixed 30-minute countdown, no setup needed.
Classroom timer
A big-display countdown built for the classroom.
Tabata timer
Tabata-style work/rest intervals (20/10 by default).
HIIT timer
Configurable high-intensity intervals (40/20 by default).
Random timer
Generates a random duration within a range, then counts down.
Other
Tip calculator
Calculate how much tip to leave and how much each person pays.
Split the Bill Between People
Calculate how much each person pays when splitting a bill, tip included.
Split Expenses Between People
Split a shared expense between several people, even if each one paid or owes a different amount, and find out who should pay whom.