SwiftWebTools.com - Free Online Tools to Convert, Calculate, and Simplify Anything

BMI Calculator

Calculate your Body Mass Index (BMI) instantly with our easy-to-use BMI Calculator!

Weight (kg):
Height (m):

Age Calculator

Find out your exact age in years, months, and days instantly with our Age Calculator!

Convolution Calculator

Perform fast and accurate convolution calculations with our Convolution Calculator!

Color Code Converter

Convert color codes between HEX, RGB, CMYK, and more instantly with our Color Code Converter!

HEX:

RGB (e.g., 255,0,0):

Carbon Footprint Calculator

Estimate your environmental impact with our easy-to-use Carbon Footprint Calculator!

Electricity (kWh per month):

Gasoline (liters per month):

Calorie Calculator

Calculate your daily calorie needs instantly with our Calorie Calculator!

Age:

Weight (kg):

Height (cm):

Gender:

Activity Level:

Miles per Gallon Calculator

Calculate your vehicle's fuel efficiency easily with our Miles Per Gallon (MPG) Calculator!

Miles Driven: Gallons Used:

MPG:

Text Case Converter

Instantly convert text to uppercase, lowercase, title case, and more with our Text Case Converter!

Word & Character Counter

Count words, characters, sentences, and spaces instantly with our Word & Character Counter!

QR Code Generator

Create custom QR codes instantly with our free QR Code Generator!

Unit Converter

Convert units instantly across multiple categories with our easy-to-use Unit Converter!

Square Root Calculator

Quickly find the square root of any number with our easy Square Root Calculator!

Binary to Decimal Converter

Convert binary numbers to decimal instantly with our Binary to Decimal Converter!

Decimal to Fraction Calculator

Convert decimals to fractions easily with our Decimal to Fraction Calculator!

Midrange Calculator

Find the midrange of any data set instantly with our Midrange Calculator!

Calculate Number Sum

Quickly calculate the sum of any set of numbers with our Number Sum Calculator!

Convert Bytes to ASCII

Convert bytes to ASCII characters instantly with our Bytes to ASCII Converter!

Generate a Random Number

Generate a truly random number instantly with our Random Number Generator!

Decimal to Time Converter

Convert decimal hours to hours, minutes, and seconds easily with our Decimal to Time Converter!

Time to Decimal Converter

Convert hours, minutes, and seconds to decimal time instantly with our Time to Decimal Converter!

Unix Time Converter

Convert Unix timestamps to human-readable dates and vice versa with our Unix Time Converter!

Quotient and Remainder Calculator

Calculate the quotient and remainder of any division easily with our Quotient and Remainder Calculator!

Days Between Two Dates

Calculate the exact number of days between two dates instantly with our Date Difference Calculator!

Days in a Month

Find the number of days in any month instantly with our Days in a Month Calculator!

Random Color Generator

Generate random colors instantly with HEX, RGB, and more using our Random Color Generator!

Hex to BCD Converter

Convert Hexadecimal to Binary-Coded Decimal (BCD) instantly with our Hex to BCD Converter!

Angel Number Calculator

Discover the meaning of your angel number instantly with our Angel Number Calculator!

Time Duration Calculator

Calculate the time duration between two timestamps easily with our Time Duration Calculator!

Birth Day of the Week Calculator

Find out the day of the week you were born with our Birth Day of the Week Calculator!

CMYK to Hex Converter

Convert CMYK colors to Hex codes instantly with our CMYK to Hex Converter!

Destiny Number Calculator

Uncover your life's path with our Destiny Number Calculator - find your numerology number instantly!

Personality Number Calculator

Reveal your inner traits with our Personality Number Calculator - find your numerology number instantly!

What is my Zodiac Sign?

Find your zodiac sign instantly based on your birth date with our Zodiac Sign Calculator!

Electricity Calculator

Calculate your electricity usage and cost easily with our Electricity Calculator!

Power (Watts): Time (Hours): Cost per kWh:

Cost:

Molarity Calculator

Calculate the molarity of a solution instantly with our easy-to-use Molarity Calculator!

Moles of solute: Liters of solution:

Molarity: M

Angle Converter

Convert angles between degrees, radians, and more instantly with our Angle Converter!

Degrees:

Radians:

Energy Converter

Convert energy units instantly across joules, calories, kWh, and more with our Energy Converter!

Joules:

Calories:

Power Converter

Convert power units instantly between watts, kilowatts, horsepower, and more with our Power Converter!

Watts:

Horsepower:

Pressure Converter

Convert pressure units easily between psi, bar, Pascal, and more with our Pressure Converter!

Pascals:

Atmospheres:

Shoe Size Converter

Convert shoe sizes instantly between US, UK, EU, and more with our Shoe Size Converter!

US Size:

EU Size:

Volume Converter

Convert volume units instantly between liters, gallons, cups, and more with our Volume Converter!

Liters:

Gallons:

How Old Are You?

Find out your exact age in years, months, and days with our Age Calculator!

Birth Year:

Your Age:

HTML, CSS, JS Minifier

Minify your HTML, CSS, and JavaScript code instantly to reduce file size and improve performance!

Website Speed Test

Check your website's speed and performance instantly with our Website Speed Test!

IP Address Lookup

Find detailed information about any IP address instantly with our IP Address Lookup tool!

Percentage Calculator

Find what percent a number is of another number quickly and easily!

Part (Number):

Total (Whole):

Result:

Hypotenuse Calculator

Calculate the hypotenuse of a right triangle using side A and side B instantly!

Side A:

Side B:

Hypotenuse:

Pythagorean Theorem Calculator

Calculate any side (A, B, or C) of a right triangle using the Pythagorean Theorem

Side A:

Side B:

Side C (Hypotenuse):

Result:

Scientific Calculator

Perform basic and scientific calculations like +, -, x, /, sin, cos, tan, log, and more!

Result:

Sum of Positive Integers

Calculate the sum of all positive integers from 1 to any number (n) instantly!

Enter a positive number (n):

Result:

Sum Between Two Numbers

Calculate the sum of all integers between any two numbers (inclusive)!

Start Number:

End Number:

Result:

Sum Between Two Numbers (with Step)

Calculate the sum of numbers between two values using a custom step (e.g. every 2nd number).

Start Number:

End Number:

Step:

Result:

Online Math Solver

Solve any math expression instantly! Supports +, -, x, /, (), %, and more.

Result:

Online Area Calculator

Select a shape and calculate its area instantly!

Select Shape:

Result:

Time Zone Converter

Convert time zones instantly and schedule meetings effortlessly with our Time Zone Converter!

Enter UTC Time (HH:MM):
Enter Time Offset (e.g., -5 for EST):

Flashcard Generator

Create custom flashcards instantly for learning and revision with our Flashcard Generator!

Password Generator

Generate strong, secure passwords instantly with our Password Generator!

Password Length:

Add to a Date

Select a date and add days, months, or years to calculate the future date.

Select Date:

Add Days:

Add Months:

Add Years:

New Date:

Subtract from a Date

Select a date and subtract days, months, or years to find the past date.

Select Date:

Subtract Days:

Subtract Months:

Subtract Years:

New Date:

Date/Time Difference Calculator

Select two date and time values to calculate the difference.

Start Date/Time:

End Date/Time:

Difference:

Average of a List

Enter numbers separated by commas to calculate the average.

Enter Numbers:

Average:

Roman Numerals Converter

Convert between Roman numerals and decimal numbers (1-3999).

Enter Value:

Result:

Gaussian Random Number Generator

Generate normally distributed random numbers with a given mean and standard deviation.

Mean:

Standard Deviation:

How many numbers?

Generated Values:

YouTube Thumbnail Downloader

Download high-quality YouTube thumbnails instantly with our YouTube Thumbnail Downloader!
Enter a YouTube Video URL or ID to get the thumbnail image.

Video URL or ID: