Welcome to giusp.com.

Simple tools for everyday tasks.

Work with text, numbers and colors — right here in your browser. Pick a tool and get started.

What would you like to make easier?

Tidy up some text, work out a number or find your next color. Browse by category below, or search for what you need.


Categories

Tools found: 132 / 132

Reverse text

Turn your text around, from the last character to the first.

Text

Prime number checker

Check whether an integer is prime.

Numbers

Text case converter

Change text to uppercase or lowercase, or capitalize its first character.

Text

Word frequencies and cloud

Count word frequencies and display a word cloud.

Text

Roman numeral converter

Convert whole numbers to Roman numerals and back.

Numbers

Palindrome checker

Check whether letters and digits read the same backwards.

Text

Words without repeated characters

Find distinct words whose characters do not repeat.

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Random color generator

Generate an RGB color with its HEX value and preview.

Graphics

Text statistics

Count words, characters, lines and UTF-8 bytes, and find the average word length.

Text

URL component encoder / decoder

Encode or decode one URL component using UTF-8 percent encoding.

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Base64 text encoder / decoder

Convert UTF-8 text to standard Base64 and back.

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Unicode slug generator

Turn a title into a short name you can use in a web address.

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JSON formatter and key sorter

Indent or minify JSON and choose whether to sort object keys.

Text

Line cleanup and sorting

Tidy a list by removing blank or repeated lines, or putting it in order.

Text

Integer base converter

Convert signed integers between binary, octal, decimal and hexadecimal.

Numbers

GCD and LCM calculator

Find the greatest common divisor and least common multiple of two integers.

Numbers

Hex to RGB / HSL converter

Have a HEX color? Get its RGB and HSL values here.

Graphics

UUID v4 generator

Generate up to 100 random version 4 UUIDs, one per line.

Text

Find and replace text

Replace literal text throughout a document.

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Whitespace normalizer

Collapse whitespace or trim each line.

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Unicode inspector

Inspect code points, categories and official character names.

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HTML entity encoder / decoder

Escape HTML characters or decode character references.

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UTF-8 hexadecimal codec

Convert text to hexadecimal bytes and back.

Text

UTF-8 binary codec

Convert text to 8-bit binary bytes and back.

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ROT13 text converter

Apply the classic ROT13 substitution to Latin letters.

Text

Text checksum calculator

Calculate SHA-256, SHA-512 or SHA3-256 for UTF-8 text.

Text

HMAC-SHA256 calculator

Calculate a keyed SHA-256 message authentication code for testing.

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CSV and JSON table converter

Convert a header-based CSV table to JSON or flat JSON objects to CSV.

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Number statistics

Get a quick overview of your numbers, from the total to the average.

Numbers

Exact fraction calculator

Add, subtract, multiply or divide two fractions exactly.

Numbers

Percentage calculator

Calculate a percentage of a value, a ratio or a percentage change.

Numbers

Prime factorization

Split a positive integer into its prime factors.

Numbers

Fibonacci number calculator

Calculate the exact Fibonacci number at index n.

Numbers

Combinations and permutations

Count selections with or without regard to order.

Numbers

Days between dates calculator

Find the difference in calendar days or count weekdays between two dates.

Numbers

Add or subtract days from a date

Move a date forward or back by calendar days or by weekdays.

Numbers

Unix timestamp converter

Convert whole Unix seconds to UTC dates or timezone-aware ISO dates to seconds.

Numbers

Line-by-line text comparison

See what changed between two versions of a text.

Text

Color contrast checker

Check whether your text stands out against its background.

Graphics

RGB color mixer

Blend two colors by a chosen percentage.

Graphics

Color palette generator

Start with one color and find others to try alongside it.

Graphics

CSS gradient generator

Generate a two-color CSS linear gradient with a preview.

Graphics

SVG pattern generator

Create a checkerboard, dot or stripe pattern as SVG source.

Graphics

IP address inspector

Inspect IPv4 or IPv6 notation without a network lookup.

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IP network calculator

Inspect an IPv4 or IPv6 CIDR network without listing its hosts.

Text

URL component inspector

Split an HTTP or HTTPS URL into its components without fetching it.

Text

Query string encoder / decoder

Convert ordered JSON string pairs to a form query string and back.

Text

Identifier case converter

Convert phrases to snake_case, kebab-case, camelCase or PascalCase.

Text

Text line wrapper

Break a long paragraph into shorter, easier-to-read lines.

Text

Line numbering tool

Prefix each text line with a sequential number.

Text

CSV column extractor

Extract one CSV column as a JSON array of strings.

Text

JSON Pointer resolver

Select a nested JSON value with an RFC 6901 pointer.

Text

JSON string encoder / decoder

Escape text as a JSON string literal or decode a literal to text.

Text

XML structure inspector

Check XML structure and count elements, attributes and depth.

Text

CSV to Markdown table

Turn your spreadsheet-style data into a table for Markdown.

Text

Temperature converter

Convert Celsius, Fahrenheit and Kelvin with an absolute-zero check.

Numbers

Length converter

Convert inches to centimeters, feet to meters, miles to kilometers and more.

Numbers

Weight converter

Switch between pounds, ounces, kilograms, grams and milligrams.

Numbers

Speed converter

Convert km/h, mph, meters per second and knots.

Numbers

Data size converter

Convert bytes, KB, MB and GB, including binary units such as MiB.

Numbers

Age calculator

Find your age in years, months and days on any date.

Numbers

Day of the week calculator

Find what day of the week any calendar date falls on.

Numbers

ISO week and date converter

Find the ISO week for a date or turn an ISO week and weekday into a date.

Numbers

Hours between two times

Work out how many hours and minutes pass between two clock times.

Numbers

Time to decimal hours

Turn hours and minutes into a decimal for a timesheet or spreadsheet.

Numbers

Random number generator

Pick a random whole number between two limits.

Numbers

Random name picker

Draw a name from a list for a class, team or game.

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List randomizer

Shuffle a list into a random order, one item per line.

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Random password generator

Create a random password with letters, numbers and optional symbols.

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Text repeater

Repeat a word, phrase or block of text as many times as you need.

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Email address extractor

Pull email addresses out of pasted text and copy them as a clean list.

Text

Split or join lines of text

Turn a list into one line, or split delimited text into separate lines.

Text

Morse code translator

Translate letters and numbers to Morse code, or turn dots and dashes back into text.

Text

Aspect ratio calculator

Find an image’s aspect ratio and work out the height for a new width.

Graphics

Discount calculator

See how much you save and what you’ll pay after a percentage discount.

Numbers

Tip calculator and bill splitter

Work out the tip, the total and each person’s share.

Numbers

Unit price comparison

Compare two pack sizes to see what you pay per unit.

Numbers

Fuel cost calculator

Estimate how much fuel a trip takes and what it costs.

Numbers

Fuel economy converter

Convert between US MPG, kilometers per liter and liters per 100 km.

Numbers

Electricity cost calculator

Estimate an appliance’s energy use and electricity cost.

Numbers

Hourly pay calculator

Multiply your hours worked by your hourly rate to get gross pay.

Numbers

Sales tax calculator

Add a tax rate to a price and see the tax amount and final total.

Numbers

Running pace calculator

Find your minutes per kilometer, minutes per mile and average speed.

Numbers

Steps to distance calculator

Estimate kilometers and miles from your step count and step length.

Numbers

Weighted grade calculator

Find a course average when assignments and exams count differently.

Numbers

Final exam grade calculator

Find the exam score you need to reach your target course grade.

Numbers

Recipe scaler

Adjust ingredient amounts for more or fewer servings.

Numbers

Area converter

Convert square feet to square meters, acres to hectares and more.

Numbers

Volume converter

Convert liters, milliliters, cubic meters, gallons and US kitchen measures.

Numbers

Time unit converter

Convert milliseconds, seconds, minutes, hours, days and weeks.

Numbers

Pressure converter

Convert PSI to bar, kilopascals, pascals and standard atmospheres.

Numbers

Angle converter

Convert angles between degrees, radians and turns.

Numbers

Circle calculator

Find a circle’s diameter, circumference and area from its radius.

Numbers

Rectangle calculator

Find the area, perimeter and diagonal of a rectangle.

Numbers

Triangle area and perimeter calculator

Find the area and perimeter of a triangle from its three sides.

Numbers

Cylinder volume and surface area calculator

Find the volume and total surface area of a round cylinder.

Numbers

Screen PPI calculator

Calculate pixel density and screen dimensions from resolution and diagonal size.

Graphics

Leap year checker

Find out whether a year has 365 or 366 days.

Numbers

UTC offset time converter

Convert a date and time between two known UTC offsets.

Numbers

Extract URLs from text

Pull HTTP and HTTPS links out of pasted text into a clean list.

Text

Compare two lists

See which items appear in both lists and which are unique to each.

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Remove accents from text

Turn accented Latin letters such as é, ñ and ü into plain letters.

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Transpose CSV rows and columns

Turn CSV rows into columns and columns into rows.

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Date range generator

List dates between two days at a fixed interval.

Numbers

Days in a month

Find how many days a month has in a given year.

Numbers

Add minutes to a time

Move a clock time forward or backward by a number of minutes.

Numbers

Add up durations

Add several durations and see the total in hours, minutes and seconds.

Numbers

Day of the year calculator

Find a date’s day number within its calendar year.

Numbers

Download time calculator

Estimate how long a file takes to download at a given speed.

Numbers

Data transfer rate converter

Convert between megabits per second, megabytes per second and related units.

Numbers

Energy unit converter

Convert joules, watt-hours, kilowatt-hours and kilocalories.

Numbers

Power unit converter

Convert watts, kilowatts, megawatts and mechanical horsepower.

Numbers

Frequency unit converter

Switch between Hz, kHz, MHz and GHz.

Numbers

Acceleration unit converter

Convert meters per second squared, feet per second squared and standard gravity.

Numbers

Decimal to fraction converter

Write a terminating decimal as a reduced fraction.

Numbers

Quadratic equation solver

Find the real or complex roots of ax² + bx + c = 0.

Numbers

Pythagorean theorem calculator

Find the hypotenuse of a right triangle from the two legs.

Numbers

Rounding calculator

Round a number to decimal places, tens, hundreds or another place value.

Numbers

Ratio scaling calculator

Keep a ratio constant while changing one of its quantities.

Numbers

Arithmetic sequence generator

Generate an arithmetic sequence up to an end value or for a set number of terms.

Numbers

Linear interpolation calculator

Estimate y at a point on the straight line between two known points.

Numbers

Logarithm calculator

Find the logarithm of a number in any valid base.

Numbers

Multiplication table generator

Make a times table for a whole number.

Numbers

Text truncator

Shorten pasted text to fit a character limit.

Text

Add a prefix or suffix to each line

Wrap each line of text with the same beginning or ending.

Text

Find duplicate lines

See which lines repeat in a list and how often they appear.

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Extract numbers from text

Pull signed integers and decimals out of pasted text.

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CSV delimiter converter

Switch a CSV table between comma, semicolon and tab separators.

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Filter CSV rows by column

Keep the CSV rows whose selected column matches an exact value.

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Initials generator

Create uppercase initials from a name or phrase.

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NATO phonetic alphabet converter

Spell letters aloud using Alfa, Bravo, Charlie and the NATO alphabet.

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Character frequency counter

Count how many times each character appears, including spaces and punctuation.

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1

Is it really free?

Yes. Every tool is free to use.

2

What happens to my data?

Your input is sent to our server to work out the result. Retention depends on the tool; check its guide and our privacy policy before sharing sensitive information.

3

Have an idea for a tool?

We’re always looking for useful ideas. If there’s a task you wish were easier, we’d love to hear about it.


4

Want to help?

Share a tool you found useful with someone who might need it.