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Exact
answers.
Convert units, shrink a photo, merge a PDF, or work a mortgage, a GPA, and a tip. The result is instant. A file never has to be uploaded to get it.
The catalog
38 tools, one job each
Converters
Exact international factors, in both directions.
CM to Inches
Convert centimetres to inches with the exact 2.54 factor. One centimetre equals 0.393701 inches.
Open02Inches to CM
Convert inches to centimetres by multiplying by 2.54. One inch is exactly 2.54 cm.
Open03KG to Lbs
Convert kilograms to pounds with the exact pound definition, 0.45359237 kg. One kilogram is 2.204623 pounds.
Open04Lbs to KG
Convert pounds to kilograms with the exact factor 0.45359237. One pound is 0.453592 kg.
Open05KM to Miles
Convert kilometres to miles with the exact mile of 1.609344 km. One kilometre is 0.621371 miles.
Open06Miles to KM
Convert miles to kilometres by multiplying by 1.609344. One mile is exactly 1.609344 km.
Open07Meters to Feet
Convert metres to feet with the exact foot of 0.3048 metres. One metre is 3.280840 feet.
Open08Feet to Meters
Convert feet to metres by multiplying by 0.3048. One foot is exactly 0.3048 metres.
Open09Grams to Ounces
Convert grams to ounces (weight) with the exact ounce of 28.349523125 g. One ounce is that many grams.
Open10Ounces to Grams
Convert ounces to grams by multiplying by 28.349523125. One ounce equals 28.35 grams.
Open11Liters to Gallons
Convert litres to US gallons. One US gallon is exactly 3.785412 litres, so one litre is 0.264172 US gallons.
Open12ML to Cups
Convert millilitres to US cups. A US customary cup is 236.588 ml, so 250 ml is a little over one cup.
Open13Gallons to Liters
Convert US gallons to litres. One US gallon is exactly 3.785412 litres.
Open14Cups to ML
Convert US cups to millilitres. One customary cup is 236.588 ml, not 250 ml.
Open15Celsius to Fahrenheit
F = C × 9/5 + 32. Freezing, boiling, and a body temperature check.
Open16Fahrenheit to Celsius
Subtract 32, then multiply by 5/9. Ovens, weather, and body temperature.
OpenImages
Compress, resize, and convert without an upload.
Compress Image
Hit a target like 200 KB without sending the photo anywhere.
Open18Resize Image
Set the pixel size. Aspect ratio stays locked unless you unlock it.
Open19JPG to PNG
Turn a JPEG into a PNG without a server.
Open20PNG to JPG
PNG to JPG, with a white mat behind transparent pixels.
Open21WebP to JPG
Open a WebP anywhere by saving it as a JPEG.
Open22HEIC to JPG
iPhone HEIC photos become JPEGs other people can open.
Open23SVG to PNG
Render a vector SVG to a sharp PNG at the pixel size you set.
OpenPDFs
Merge, split, and turn pictures into documents.
Calculators
Mortgages, GPA, tips, time zones, and percentages.
Age Calculator
Years, months, days, and the next birthday.
Open28Percentage Calculator
Percent of a number, one number as a percent, and percent change.
Open29GPA Calculator
Letter grades and credits, on a 4.0 or 4.3 scale.
Open30Tip Calculator
Tip, total, and the share for each person.
Open31Mortgage Calculator
Monthly payment, total interest, and the effect of paying extra.
Open32Compound Interest Calculator
Starting amount, rate, and a contribution each period.
Open33Time Zone Converter
A wall-clock time in one city, shown in another.
OpenGenerators
Passwords, QR codes, word counts, and styled text.
Unix Timestamp
Seconds or milliseconds, to a date and back.
Open35QR Code Generator
A scannable PNG for a link, a note, or Wi-Fi.
Open36Password Generator
A random password, with a strength reading in bits.
Open37Word Counter
Words, characters, sentences, and reading time as you type.
Open38Fancy Text
Unicode styles you can paste into a bio or a caption.
OpenBuilt for the search, not a signup wall
Each tool has its own page, its own answer, and the formula in plain sight. A centimetre is divided by 2.54 because that is the inch. A mortgage payment uses the standard amortization formula. An image is compressed in the tab you already have open.
Converters, Images, PDFs, Calculators, Generators are linked from every page, so you can move from a conversion to a PDF or a calculator without starting over.