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3690+ Free Online Tools Directory โ Developer Tools, Text Processing, Image Editing, PDF Tools, Encryption, Unit Conversion, Financial Calculators, Health Calculators and 30+ Categories
Featured ToolsTop 75
SIP CalculatorCalculate expected returns and final value of systemati
Loan EMI CalculatorCalculate monthly EMI payments and total interest for l
Retirement Savings CalculatorCalculate how much you need to save for retirement base
Compound Interest CalculatorCalculate compound interest returns with annual/monthly
Aspect Ratio CalculatorCalculate aspect ratio for images/videos. Auto-compute
Early Payoff CalculatorFree online early payoff calculator. Enter your loan ba
Subscription Cost CalculatorSubscription cost calculator. Add all your streaming, m
Tip CalculatorFree online tip calculator with country-specific tippin
Bitcoin CalculatorLive BTC price, fiat conversion, investm
Biweekly Payment CalculatorCompare biweekly vs monthly, pay half ev
Free AI Jailbreak Detector - attack |LLMSecurFree AI jailbreak detector. Analyze p...
Free Ai Sentence RewriterFree online Ai Sentence Rewriter tool...
Free Animated BackgroundsFree online CSS animated background g...
Free API Response MockerFree online API response mocker. Gene...
Free Bar Chart Maker Online - Data ComparisonFree online bar chart maker. Custom d...
Free Animated Gradient Background GeneratorFree online animated gradient backgro...
Free CMYK to RGB Color ConverterFree online CMYK to RGB color convert...
Free Color BlenderFree online color blending tool that ...
Free Online Color Blind Simulator | AccessibiFree online color blindness simulator...
Free Online Color Blindness SimulatorFree online Color Blindness Simulator...
Audio Reverse PlayerUpload audio files for reverse playback,
Vocal Remover OnlineSeparate vocals from music, create karao
Audio VisualizerReal-time audio spectrum visualization w
Sound Frequency GeneratorGenerate sine/square/sawtooth/triangle w
White Noise GeneratorImprove focus, enhance relaxation, and s
Early Payoff CalculatorFree online early payoff calculator. Enter your loan ba
Tire Size CalculatorFree online tire size calculator. Compare two tire spec
Deck CalculatorFree online deck calculator. Calculate the number of de
Prorated Rent CalculatorCalculate prorated rent when moving in mid-month or mov
Board Foot CalculatorCalculate board feet for lumber, batch multiple sizes,
Free Frame Grabber OnlineFree online video frame grabber. Extr...
Free MP4 to GIF Converter - Online Video to GFree online MP4 to GIF converter. Con...
Prompt Effectiveness Analyzer - PromptQualityFree online Prompt Effectiveness Anal...
CSS Typewriter Effect GeneratorFreeOnlineCSS Typewriter Effect Gener...
Online Video CutterFree online video cutter. Upload vide...
Chemical Equation BalancerFree online chemical equation balancer. Balance acid-ba
Molar Mass CalculatorFree online molar mass calculator. Enter a chemical for
Solution Dilution CalculatorFree online solution dilution calculator using the C1V1
Rectangle CalculatorFree online rectangle calculator. Enter length and widt
Chronotype Quiz8 questions to discover your sleep anima
HAS-BLED ScoreAssess bleeding risk in anticoagulated p
Certificate GeneratorFree online certificate generator. Create professional
Resignation Letter GeneratorFree online resignation letter generator. Create a prof
Spirograph GeneratorFree online spirograph generator. Create stunning geome
Golden Hour CalculatorFree online Golden Hour Calculator. Precisely compute s
MIME Type LookupSearch 500+ MIME types by file extension
YouTube Description GeneratorFree online YouTube video description generator. Create
CSS Border Text GeneratorFree online CSS border text generator. Visually create
Pizza Dough CalculatorCalculate pizza dough recipes using baker's percentages
๐งฎ Calculators3328 tools ยท Click to view allโผ
SIP CalculatorCalculate expected returns and final value of systemati
Loan EMI CalculatorCalculate monthly EMI payments and total interest for l
Retirement Savings CalculatorCalculate how much you need to save for retirement base
Compound Interest CalculatorCalculate compound interest returns with annual/monthly
Aspect Ratio CalculatorCalculate aspect ratio for images/videos. Auto-compute
๐ฐ Finance138 tools ยท Click to view allโผ
Early Payoff CalculatorFree online early payoff calculator. Enter your loan ba
Subscription Cost CalculatorSubscription cost calculator. Add all your streaming, m
Tip CalculatorFree online tip calculator with country-specific tippin
Bitcoin CalculatorLive BTC price, fiat conversion, investm
Biweekly Payment CalculatorCompare biweekly vs monthly, pay half ev
๐ Sports109 tools ยท Click to view allโผ
Free AI Jailbreak Detector - attack |LLMSecurFree AI jailbreak detector. Analyze p...
Free Ai Sentence RewriterFree online Ai Sentence Rewriter tool...
Free Animated BackgroundsFree online CSS animated background g...
Free API Response MockerFree online API response mocker. Gene...
Free Bar Chart Maker Online - Data ComparisonFree online bar chart maker. Custom d...
๐จ Color44 tools ยท Click to view allโผ
Free Animated Gradient Background GeneratorFree online animated gradient backgro...
Free CMYK to RGB Color ConverterFree online CMYK to RGB color convert...
Free Color BlenderFree online color blending tool that ...
Free Online Color Blind Simulator | AccessibiFree online color blindness simulator...
Free Online Color Blindness SimulatorFree online Color Blindness Simulator...
๐ต Audio40 tools ยท Click to view allโผ
Audio Reverse PlayerUpload audio files for reverse playback,
Vocal Remover OnlineSeparate vocals from music, create karao
Audio VisualizerReal-time audio spectrum visualization w
Sound Frequency GeneratorGenerate sine/square/sawtooth/triangle w
White Noise GeneratorImprove focus, enhance relaxation, and s
New Tools20 tools ยท Click to view allโผ
Early Payoff CalculatorFree online early payoff calculator. Enter your loan ba
Tire Size CalculatorFree online tire size calculator. Compare two tire spec
Deck CalculatorFree online deck calculator. Calculate the number of de
Prorated Rent CalculatorCalculate prorated rent when moving in mid-month or mov
Board Foot CalculatorCalculate board feet for lumber, batch multiple sizes,
๐ฌ Video15 tools ยท Click to view allโผ
Free Frame Grabber OnlineFree online video frame grabber. Extr...
Free MP4 to GIF Converter - Online Video to GFree online MP4 to GIF converter. Con...
Prompt Effectiveness Analyzer - PromptQualityFree online Prompt Effectiveness Anal...
CSS Typewriter Effect GeneratorFreeOnlineCSS Typewriter Effect Gener...
Online Video CutterFree online video cutter. Upload vide...
Science Tools4 tools ยท Click to view allโผ
Chemical Equation BalancerFree online chemical equation balancer. Balance acid-ba
Molar Mass CalculatorFree online molar mass calculator. Enter a chemical for
Solution Dilution CalculatorFree online solution dilution calculator using the C1V1
Rectangle CalculatorFree online rectangle calculator. Enter length and widt
Health2 tools ยท Click to view allโผ
Chronotype Quiz8 questions to discover your sleep anima
HAS-BLED ScoreAssess bleeding risk in anticoagulated p
๐ Office2 tools ยท Click to view allโผ
Certificate GeneratorFree online certificate generator. Create professional
Resignation Letter GeneratorFree online resignation letter generator. Create a prof
โจ Creative2 tools ยท Click to view allโผ
Spirograph GeneratorFree online spirograph generator. Create stunning geome
Golden Hour CalculatorFree online Golden Hour Calculator. Precisely compute s
Dev Tools1 tools ยท Click to view allโผ
MIME Type LookupSearch 500+ MIME types by file extension
Media Tools1 tools ยท Click to view allโผ
YouTube Description GeneratorFree online YouTube video description generator. Create
Css Tools1 tools ยท Click to view allโผ
CSS Border Text GeneratorFree online CSS border text generator. Visually create
Kitchen Tools1 tools ยท Click to view allโผ
Pizza Dough CalculatorCalculate pizza dough recipes using baker's percentages
About Free ToolBase
Free ToolBase is a collection of 3400+ free online tools covering 61 categories โ from JSON formatters and PDF converters to financial calculators and health trackers. Every tool runs entirely in your browser. No installation, no sign-up, no server uploads. Just open and use.
We're a small team of developers who believe great tools should be free and private. We hand-code every tool's calculation logic โ no AI-generated filler content. Your data stays on your device; we don't even have a server to send it to.
All code is open source at github.com/webtools-cn/tools-site. Found a bug? Want a tool? Open an issue or email us: dexshuang@google.com.