Free online tools
PDF tools
Merge PDFSplit PDFRemove PDF PagesRotate PDFJPG to PDFPDF to JPGAdd Page Numbers to PDFWatermark PDFPDF to TextOrganize PDF PagesSign PDFCompress PDFUnlock PDFProtect PDFFill PDF FormPDF to Word
Image tools
HEIC to JPGCompress ImageResize ImageImage ConverterRotate & Flip ImageCrop ImageView & Remove EXIF DataFavicon GeneratorQR Code GeneratorQR Code ScannerImage to Text (OCR)Remove BackgroundBlur Faces in PhotosPhoto Collage MakerMeme GeneratorImage Color Picker
Video and audio tools
Video to MP3Video to GIFAudio ConverterScreen RecorderVoice RecorderCompress VideoTrim VideoAudio Cutter
Unit converters
Length ConverterWeight ConverterTemperature ConverterVolume ConverterArea ConverterSpeed ConverterData Size ConverterTime Converter
Calculators
Days Between DatesAdd or Subtract DaysAge CalculatorPercentage CalculatorBMI CalculatorTip CalculatorLoan CalculatorMortgage CalculatorCompound Interest CalculatorGPA CalculatorTime Zone Converter
Text tools
Word CounterCase ConverterRemove Duplicate LinesSort LinesFind and ReplaceDiff CheckerCharacter CounterFancy Text GeneratorLorem Ipsum GeneratorText to SpeechMarkdown to HTML
Timers and random tools
Device tests
Microphone TestWebcam TestKeyboard TestMouse TestSpeaker TestDead Pixel TestWhat Is My Screen Resolution?
DNA and protein sequence tools
Reverse ComplementDNA to RNACombine FASTA SequencesSplit FASTA SequenceGenBank to FASTAEMBL to FASTAGenBank Feature ExtractorEMBL Feature ExtractorGenBank Translation ExtractorEMBL Translation ExtractorSplit CodonsRange Extractor DNARange Extractor ProteinWindow Extractor DNAWindow Extractor ProteinFilter DNAFilter ProteinGroup DNAGroup ProteinOne-Letter to Three-Letter Amino AcidsThree-Letter to One-Letter Amino AcidsDNA StatisticsProtein StatisticsCodon UsageCpG Island FinderDNA Molecular WeightProtein Molecular WeightProtein Isoelectric PointProtein GRAVYDNA Pattern FindProtein Pattern FindFuzzy Search DNAFuzzy Search ProteinIdentity and SimilarityORF FinderTranslate DNA to ProteinReverse TranslateReverse Translate a Protein AlignmentPCR Primer StatsPCR ProductsRestriction SummaryMutate for DigestPairwise Align DNAPairwise Align ProteinPairwise Align CodonsRestriction MapTranslation MapPrimer MapColor Alignment by ConservationColor Alignment by PropertiesCodon PlotRandom DNA SequenceRandom Protein SequenceRandom Coding DNARandom DNA RegionsRandom Protein RegionsSample DNASample ProteinShuffle DNAShuffle ProteinMutate DNAMutate ProteinGenetic CodesIUPAC Codes
Chemistry calculators
Molar Mass CalculatorChemical Equation BalancerMolarity CalculatorDilution CalculatorSerial Dilution CalculatorConcentration ConverterpH CalculatorBuffer CalculatorIdeal Gas Law CalculatorHalf-Life CalculatorPercent Yield CalculatorBeer-Lambert Law Calculator
Biology lab calculators
DNA Concentration CalculatorDNA Copy Number CalculatorLigation CalculatorRCF to RPM ConverterCell Doubling Time CalculatorHemocytometer CalculatorHardy-Weinberg CalculatorPunnett Square Calculator
Developer tools
Base64 Encode / DecodeURL Encode / DecodeJSON FormatterHash GeneratorPassword GeneratorUUID GeneratorUnix Timestamp ConverterJWT DecoderColor ConverterRegex TesterCron Expression ExplainerSQL FormatterYAML to JSONCSV to JSONImage to Base64
Popular conversions
CM to InchesInches to CMMeters to FeetFeet to MetersKM to MilesMiles to KMKG to PoundsPounds to KGGrams to OuncesCelsius to FahrenheitFahrenheit to CelsiusLiters to GallonsML to Fluid OuncesSquare meters to Square feetKM/H to MPHMB to GBPNG to JPGJPG to PNGWebP to JPGWebP to PNGSVG to PNGHEIC to PNGPDF to PNGMP4 to MP3MOV to MP3MP4 to GIFWAV to MP3M4A to MP3SHA-256 GeneratorMD5 GeneratorCompress JPGCompress PNGWi-Fi QR Code GeneratorOCR PDFRingtone MakerCompress Image to 20 KBCompress Image to 100 KBCompress PDF to 100 KBResize Image to 600 × 600