All your online tools in one clean website.
OnlineToolsBase helps you convert, calculate, format and optimize — for text, images, PDFs, finance, social media and more. Fast, free and simple to use on any device.
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Browse tools by category
Click a category to explore all related tools on OnlineToolsBase.
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9 toolsTime and Age Tools
Calculate age, time differences and important dates.
Age CalculatorAge in Weeks & MonthsAge Difference CalculatorWeeks CalculatorTime Duration CalculatorDays Between Dates+3 more
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11 toolsFinance Tools
Loans, interest, EMIs, SIPs and investment calculators.
Loan CalculatorSimple Interest CalculatorMortgage CalculatorInterest Rate CalculatorEMI CalculatorCompound Interest Calculator+5 more
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14 toolsText Tools
Format, clean and analyze your text content.
Word CounterCharacter CounterCase ConverterRemove Extra SpacesRemove Line BreaksText Reverser+8 more
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9 toolsImage Tools
Compress, resize, crop and convert images easily.
Image CompressorImage ResizerImage CropperImage Blur ToolImage Rotate ToolImage Format Converter+3 more
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17 toolsSocial Media Tools
Social media downloads, hashtags, previews and more.
Instagram Bio GeneratorInstagram Caption GeneratorInstagram Fancy Font GeneratorOpen Graph Meta Tag GeneratorSocial Share Link BuilderTikTok Bio Generator+11 more
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13 toolsPDF Tools
Convert, compress, extract and edit PDF documents online.
Images to PDFMerge PDFProtect PDFSplit PDFUnlock PDFPDF Compressor+7 more
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10 toolsSEO Tools
Free SEO tools to analyze, optimize and improve your website rankings.
Open Graph Tag GeneratorURL Encoder / DecoderSemantic Keyword GeneratorXML Sitemap GeneratorRobots.txt GeneratorMeta Tag Generator+4 more
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6 toolsConverter Tools
Convert units like length, weight, temperature and more.
Area ConverterLength ConverterSpeed ConverterTemperature ConverterVolume ConverterWeight Converter
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7 toolsMath Tools
Math calculators for percentages, averages, fractions and more.
Average CalculatorFraction CalculatorNumber Base ConverterPercentage CalculatorRatio CalculatorRoman Numeral Converter+1 more
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7 toolsHealth and Fitness Tools
Health, fitness and nutrition calculators for daily tracking.
BMI CalculatorBMR CalculatorPregnancy Due Date CalculatorBody Fat Percentage CalculatorCalorie CalculatorIdeal Weight Calculator+1 more
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3 toolsSecurity Tools
Password, hash and security-related online tools.
Hash Generator (MD5 / SHA-256)Password GeneratorPassword Strength Checker
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