everyday tools

Convert Landscape to Portrait (and Portrait to Landscape)

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To convert a landscape image to portrait, or a portrait image to landscape, you change which side of the picture is the long one. A landscape photo is wider than it is tall, a portrait photo is taller than it is wide, and many uses force one or the other. A phone wallpaper needs portrait, a desktop wallpaper needs landscape, a Reel or TikTok needs portrait, a YouTube thumbnail needs landscape. This guide shows how to convert an image between landscape and portrait, and when to use rotation instead.

In this guide

What image orientation means

Orientation is about the ratio of width to height. A landscape image is wider than it is tall, often something like 16:9 or 4:3. A portrait image is the reverse, taller than it is wide, often 9:16 or 3:4. Same picture content can exist in either orientation, but the framing and the way it fits on a screen change completely between the two.

Changing orientation is one of the most common image conversions, alongside the format conversions covered in our guide to online converters. It is also one of the most misunderstood, because there are two different ways to do it.

Convert landscape to portrait

The landscape to portrait converter takes a wide image and produces a tall one, fit for phone screens, Reels, Stories, and any vertical layout. It changes the canvas itself, not just the rotation, so the result is genuinely a portrait image rather than a landscape image tipped on its side.

This is the right tool when you have a landscape photo and need a portrait version of the same scene, for example a 16:9 photo that has to fit a 9:16 Story frame.

Convert portrait to landscape

The reverse goes the same way. The vertical to horizontal image converter takes a tall image and produces a wide one, fit for desktop backgrounds, YouTube thumbnails, and anything horizontal. Vertical and portrait mean the same thing here, as do horizontal and landscape, the names just come from different traditions.

When to rotate instead of convert

Rotation is different from changing orientation. If a photo is simply turned the wrong way, for example a portrait shot that opens as if it were landscape because the camera saved it sideways, you do not want to convert the canvas, you want to rotate the image by 90 degrees so it looks right.

The rotate image tool handles those quarter-turn fixes, as well as flipping a picture upside down with a 180 degree rotation. Use this when the image content is already in the right orientation but is rotated incorrectly.

What happens to the content

Converting between landscape and portrait genuinely changes the shape of the canvas, so something has to give. Either the picture is cropped, with parts of the frame trimmed off to fit the new shape, or it is fitted with extra space added at the top and bottom, or the sides, to keep the whole picture visible. Both are valid, and the right choice depends on whether the framing or the completeness of the image matters more.

For social platforms that crop aggressively, planning the conversion in advance keeps the important part of the picture in the kept area.

Free orientation tools used in this guide

When you actually need this

Social media is the main reason. Instagram Stories and Reels, TikTok, and YouTube Shorts are vertical, while a landscape photo from a regular camera fits none of them well. The same applies in reverse for YouTube videos, blog headers, and desktop wallpapers, where a portrait phone shot needs reshaping to fit. Print is another reason, since a flyer designed in portrait and a banner designed in landscape demand opposite source images.

Frequently asked questions

What is the difference between landscape and portrait?

Landscape is wider than tall, portrait is taller than wide. Most cameras shoot landscape by default, while phones held upright shoot portrait.

How do I convert a landscape photo to portrait?

A landscape to portrait converter changes the canvas from wide to tall, producing a genuine portrait image rather than a tipped sideways landscape one.

What is the difference between rotating and changing orientation?

Rotating turns the image without changing the canvas shape, which fixes a photo saved the wrong way. Changing orientation reshapes the canvas itself from wide to tall or back.

Will my image lose quality when I change orientation?

The conversion itself does not lose pixel data. Quality loss only comes from cropping, which removes parts of the image, or from saving the result in a lossy format like JPG.

What size is portrait for Instagram Stories?

The standard Stories and Reels ratio is 9:16, often used at 1080 by 1920 pixels. A landscape photo needs converting to that ratio to fit without black bars.

Convert BMP to PNG, JPG, GIF or WebP

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To convert BMP to PNG, JPG, GIF, or WebP, you re-save the image in a format that compresses it, because BMP itself does not. A BMP file stores every pixel in full with no compression, so the same picture that is six megabytes as a BMP can be a small fraction of that in almost any other format. This guide shows how to convert BMP to each common format, and which one to pick for your image.

In this guide

Why BMP files need converting

BMP stores an image as raw pixels with no compression at all. That makes it simple and lossless, but also very large: a full-screen image can run to several megabytes as a BMP while the identical picture is well under a megabyte in a compressed format. Most websites, email systems, and apps either reject BMP files or struggle with their size, which is why converting is almost always the first step. The format itself is covered in our guide to BMP files.

Converting does not change what the image looks like in any meaningful way, it just stores the same picture far more efficiently.

Convert BMP to PNG

PNG is the safest default. It is lossless, so it keeps every detail of the original exactly, while still compressing the file to a fraction of the BMP size. It also supports transparency. The BMP to PNG converter is the right choice for screenshots, logos, diagrams, and anything with sharp edges or text, where you want no quality loss at all.

Convert BMP to JPG

JPG produces the smallest files for photographs. It is lossy, meaning it discards some detail the eye is unlikely to notice in exchange for a much smaller size, and it does not support transparency. The BMP to JPG converter, and the identical BMP to JPEG converter, suit photos and complex images where the small quality trade is worth the smaller file.

Convert BMP to WebP

WebP is the modern format that usually beats both. It compresses smaller than JPG at similar quality and smaller than PNG for the same image, and it supports transparency too. The BMP to WebP converter is the best pick when the image is for the web and you want the smallest file without giving up quality.

Convert BMP to GIF

GIF is limited to 256 colours, so it is not suited to photographs, but it is fine for simple graphics with few colours, and it is the format for short looping animations. The BMP to GIF converter handles that narrower set of cases.

Which format should you choose

Convert toBest forQualityTransparency
PNGScreenshots, logos, text, graphicsLosslessYes
JPGPhotographsLossy, smallest for photosNo
WebPAnything for the webLossy or lossless, smallest overallYes
GIFSimple graphics, animation256 colours onlyLimited

In short: PNG when you want no quality loss, JPG for the smallest photo, WebP for the web, and GIF only for simple or animated graphics.

Free BMP converters used in this guide

Frequently asked questions

What is the best format to convert BMP to?

PNG is the safest default, since it is lossless and much smaller than BMP. Use JPG for the smallest photo files, and WebP for the smallest files on the web.

Why is my BMP file so large?

BMP stores every pixel with no compression, so it is far larger than formats like PNG or JPG that compress the same image.

Does converting BMP to PNG lose quality?

No. PNG is lossless, so converting from BMP keeps every detail of the original while making the file much smaller.

Should I convert BMP to JPG or PNG?

Use JPG for photographs where the smallest file matters, and PNG for screenshots, text, or graphics where you want no quality loss and possibly transparency.

Is BMP to JPEG the same as BMP to JPG?

Yes. JPG and JPEG are two names for the same format, so the two converters produce the same result.

Convert Binary to Text and Text to Binary

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To convert binary to text, you turn each group of eight bits back into the character it stands for. Computers store every letter and symbol as a number, and that number is held in binary, so a string like 01001000 01101001 is really just the word Hi written the way a machine keeps it. This guide shows how to convert binary to text and text to binary, explains the simple rule that connects the two, and points you to a tool for each direction.

In this guide

How text and binary connect

Every character has a number assigned to it by a standard called ASCII. The capital letter A is 65, lowercase a is 97, the digit 0 is 48, and a space is 32. A computer then stores that number in binary, using eight bits, which is one byte, for each character.

So converting between text and binary is really two steps joined together: character to number to binary, or binary to number to character. The numbers are the bridge, and they come from the same ASCII table covered in our guide to number systems. Once you see that text is just numbers in disguise, both conversions make sense.

Convert binary to text

To read binary as text, you split the string into groups of eight bits, turn each group into its decimal number, and look up the character that number represents. The group 01001000 is 72, which is the letter H.

Doing that by hand for a whole message is slow and easy to slip on, so the binary to text converter does it in one step. Paste the binary, and it returns the readable text. For binary that uses extended characters, the binary to UTF-8 decoder handles the wider character set, and the binary to ASCII converter is another route to the same result.

Convert text to binary

The reverse works the same way backwards: take each character, find its number, and write that number in eight bits. The letter H is 72, which in binary is 01001000.

The text to binary converter turns any text into its binary codes instantly, and the ASCII to binary converter does the same job. You type or paste the text, and you get back a binary string, one byte per character.

ASCII and UTF-8

Plain ASCII covers the basic English letters, digits, and common symbols, and each fits in a single byte. That is why a simple message converts cleanly to eight bits per character.

Modern text often goes beyond that, with accented letters, other alphabets, and emoji. These use a standard called UTF-8, which lets a single character take more than one byte when it needs to. If your binary represents anything beyond basic English, the UTF-8 decoder is the tool that reads it correctly, because a plain ASCII reading would only get the simplest characters right.

A worked example

Take the word Hi. The letter H is 72, which is 01001000 in binary. The letter i is 105, which is 01101001. Put them together and Hi becomes 01001000 01101001. Run that binary back through the binary to text converter and you get Hi again. The conversion is lossless, so nothing is added or removed in either direction.

Free converters used in this guide

Where this is used

Converting between binary and text comes up in learning and teaching how computers represent data, in puzzles and capture-the-flag challenges where a message is hidden as binary, and in debugging, where seeing the raw bits of a string helps explain an unexpected result. It is also a quick way to understand why a file that looks like gibberish is really just text the program read with the wrong rules.

Frequently asked questions

How do I convert binary to text?

Split the binary into groups of eight bits, turn each group into its number, and look up the matching character. A binary to text converter does all three steps for you at once.

How many bits is one character?

One basic ASCII character is eight bits, which is one byte. Characters beyond basic English use UTF-8 and can take more than one byte.

What is the binary for the letter A?

The capital letter A is the number 65, which in eight-bit binary is 01000001.

Is converting binary to text reversible?

Yes. The conversion is lossless, so text converted to binary and back returns exactly the original text.

Why does my binary not convert correctly?

Usually the bits are not grouped into clean bytes of eight, or the text uses characters beyond basic ASCII. For the second case, use a UTF-8 decoder rather than a plain ASCII reading.

Free Online Calculators: Math, Numbers and Everyday Tools

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Free online calculators handle the kind of arithmetic that is slow, error-prone, or simply tedious to do by hand. Finding every prime factor of a large number, working out the 40th Fibonacci number, or checking a body mass index takes seconds with the right tool and several careful minutes without one. This guide is a map of the calculators on this site: the number and math tools, the sequence and constant tools, and the everyday calculators, with a note on when each one earns its place.

In this guide

When a calculator beats doing it by hand

Some arithmetic is quick in your head. Some is not. The work that genuinely needs a tool tends to share three traits: it repeats the same step many times, a single slip ruins the whole answer, or the numbers are simply too large to track.

Finding the prime factors of 4,294,967,295 is not hard in principle, it is just dozens of trial divisions where one mistake sends you down the wrong path. A calculator removes that risk. The tools below all run in your browser, process the numbers on your own device, and need no account, so reaching for one costs nothing.

Number and digit calculators

The most basic calculators work on the digits and structure of a number. The digit sum calculator adds up the individual digits of a number, a step used in checksums and in simple divisibility tests. The digit product calculator multiplies them instead.

For working across a whole set of numbers, the number sum calculator and the sum of integers calculator total a list or a range, and the number divisors calculator lists every number that divides cleanly into a given value.

Prime and factor calculators

Prime numbers are the building blocks of every other whole number, and they are tedious to work out by hand. The prime numbers calculator lists the primes up to a limit you set. The prime factors calculator breaks a single number down into the primes that multiply to make it, for example showing that 360 is 2 by 2 by 2 by 3 by 3 by 5.

Prime factorisation sits behind a lot of practical maths, from simplifying fractions to the key exchange that protects web traffic, so a reliable tool for it is worth keeping handy.

Sequence calculators

A sequence is a list of numbers built by a fixed rule, and the famous ones grow fast enough that hand calculation becomes impractical within a dozen steps. The Fibonacci calculator generates the sequence where each number is the sum of the two before it, the pattern that appears throughout nature and design.

The Lucas numbers calculator handles a closely related sequence, and the factorial calculator works out factorials, the running product 1 by 2 by 3 and onward, which grow so quickly that 20 factorial already passes two quintillion.

Math constant calculators

Some numbers never end and never repeat, and you sometimes need them to a specific precision. The pi digits calculator produces the digits of pi to as many places as you ask for. The e digits calculator does the same for Euler’s number, the base of natural logarithms, and the phi digits calculator produces the golden ratio. These are useful for testing, for teaching, and for any work that needs a constant carried to high precision.

Everyday calculators

Not every calculator is about pure maths. A few solve common practical problems. The BMI calculator works out body mass index from height and weight, a quick screening figure worth understanding properly, which our guide to BMI covers in full.

The age calculator works out an exact age in years, months, and days from a birth date, and the aspect ratio calculator resizes width and height while keeping their proportion fixed, which is the everyday fix for images and video that would otherwise stretch. The full set lives in the math tools category and the number tools category.

Frequently asked questions

Are these calculators free?

Yes. Every calculator on the site is free, runs in your browser, and needs no account. The numbers are processed on your own device.

What is prime factorisation used for?

It breaks a number into the primes that multiply to make it. It is used to simplify fractions, find common denominators, and it underpins parts of modern encryption.

How large a number can these tools handle?

The calculators handle everyday and large values comfortably. Extremely large inputs, such as a factorial of a very high number, can take longer because the result itself becomes enormous.

What is the difference between digit sum and number sum?

A digit sum adds the individual digits inside one number, so the digit sum of 142 is 7. A number sum adds several separate numbers together.

Why would I need the digits of pi?

Most often for testing, teaching, or any calculation that must carry a constant to a set precision. The pi digits calculator produces as many places as you request.