UTILSHA · FREE ONLINE TOOLS
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Free online calculators and tools to solve, convert, calculate, create, and optimize in seconds. No sign-up, directly in your browser.
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318 tools available
Paint Calculator
Calculate how much paint you need from area, coats, coverage, and an optional waste allowance.
ConstructionTile Calculator
Calculate the tiles and boxes needed from total area, tile dimensions, and waste allowance.
ConstructionConcrete Calculator
Calculate concrete volume for a slab with mixed units and an optional waste allowance.
ConstructionElectricity Cost Calculator
Estimate appliance energy use in kWh and cost using your own electricity rate.
Electrical & ElectronicsMean, Median and Mode Calculator
Calculate mean, median, mode, sum, range, and extremes for a list of numbers.
Math & StatisticsROI Calculator
Calculate investment profit or loss and percentage return on investment.
FinanceBreak-Even Calculator
Calculate how many units you need to sell to cover fixed and variable costs.
FinanceAspect Ratio Calculator
Simplify an aspect ratio and calculate width or height while preserving proportions.
ImagesOhm's Law Calculator
Calculate voltage, current, resistance, and power from two known electrical values.
Electrical & ElectronicsTyping Speed Test
Measure words per minute, accuracy, correct characters, and errors with original English texts.
TextBrick Calculator
Estimate how many bricks you need from wall area, openings, brick size, mortar joint, and waste.
ConstructionPlaster and Render Calculator
Calculate render or plaster volume and split it with a configurable cement, lime, and sand ratio.
ConstructionFloor Screed Calculator
Calculate floor screed volume from area, thickness, and an optional allowance.
ConstructionConcrete Mix Ratio Calculator
Split a mix volume among cement, sand, and gravel using a configurable ratio.
ConstructionDrywall Calculator
Estimate the drywall sheets needed from the area, sheet dimensions, and waste allowance.
ConstructionStair Calculator
Calculate basic straight-stair geometry: risers, treads, and horizontal run.
ConstructionRoof Area Calculator
Calculate the approximate area of a simple roof from projected area and pitch.
ConstructionGravel Calculator
Calculate gravel or stone volume and optionally estimate mass when density is known.
ConstructionConcrete Block Calculator
Estimate concrete blocks for a wall from area, openings, modular dimensions, and waste.
ConstructionSlope Calculator
Convert slope among rise and run, percentage, and degrees without confusing 10% with 10°.
ConstructionJob Offer Comparison Calculator
Compare two job offers by compensation, expenses, hours, and commute time.
Work & SalaryReal Hourly Wage Calculator
Calculate what your hour is really worth after work expenses and unpaid time.
Work & SalaryRequired Freelance Rate Calculator
Estimate a sustainable rate from your income target, expenses, and billable hours.
Work & SalarySalary Converter
Convert hourly, daily, weekly, biweekly, monthly, or annual pay using your schedule.
Work & SalaryShowing 1–24 of 318 tools
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- Overtime Pay Calculator
- Commute Cost Calculator
- Freelance Project Quote Calculator
- Salary Allocation Planner
- Vacation Accrual Calculator
- Shift Pay Calculator
- Truco Score Keeper
- Generala Scorecard
- Chinchón Score Keeper
- Escoba Score Keeper
- Canasta Score Keeper
- Burako Score Keeper
- Dominoes Score Keeper
- Game Score Keeper
- Spades Score Keeper
- Hearts Score Keeper
- Gin Rummy Score Keeper
- Euchre Score Keeper
- Online Bingo Caller
- Fraction Calculator
- Scientific Calculator
- Standard Deviation Calculator
- Combination and Permutation Calculator
- Quadratic Equation Calculator
- LCM and GCF Calculator
- Ratio and Proportion Calculator
- Exponents and Roots Calculator
- Scientific Notation Calculator
- Probability Calculator
- Mortgage Calculator
- Tip Calculator
- Fuel Cost Calculator
- Square Footage Calculator
- Random Number Generator
- Online Stopwatch
- Online Timer
- Sign PDF
- JWT Decoder
- Query String to JSON
- JSON to Query String
- URL Parser
- Hash Generator
- File Checksum
- JSON to TypeScript Interface
- JSON to TypeScript Type
- HTTP Status Codes
- MIME Types
- XML to JSON
- JSON to XML
- YAML to JSON
- JSON to YAML
- CSV to TSV
- TSV to CSV
- XML Formatter
- XML Minifier
- XML Validator Online
- JSON Validator
- Compare Texts
- Remove Duplicate Lines
- Sort Lines
- Count Lines
- Remove Extra Spaces
- Remove Line Breaks
- Find and Replace Text
- Slug Generator
- CSV to JSON
- JSON to CSV
- Add Watermark to Image
- Adjust Image Brightness, Contrast and Saturation
- Apply Image Filters
- Image Color Palette Generator
- Crop Image
- Rotate Image
- Flip Image
- Image to Base64
- Base64 to Image
- Image Color Picker
- Pixelate Image
- Blur Image
- Add Background to Image
- Reduce Image File Size
- JPG to PNG Converter
- JPG to WEBP Converter
- PNG to JPG Converter
- PNG to WEBP Converter
- WEBP to JPG Converter
- WEBP to PNG Converter
- Compress JPG
- Compress PNG
- Compress WEBP
- Resize JPG
- Resize PNG
- Resize WEBP
- Area Converter
- Speed Converter
- Pressure Converter
- Energy Converter
- Power Converter
- Data Storage Converter
- Time Unit Converter
- Angle Converter
- Frequency Converter
- Force Converter
- Date Calculator
- Time Difference Calculator
- Date and Time Duration Calculator
- Date Countdown
- Day of Year Calculator
- Week Number Calculator
- Leap Year Calculator
- Time Ago Calculator
- Decimal Hours Converter
- Time Zone Difference Calculator
- Random Name Picker
- Wheel of Names
- Secret Santa Generator
- Random Team Generator
- List Randomizer
- Random Pair Generator
- Round Robin Generator
- Single Elimination Bracket Generator
- Dice Roller
- Coin Flip
- BMI Calculator
- Body Fat Calculator
- Ideal Weight Calculator
- Lean Body Mass Calculator
- Waist-to-Height Ratio Calculator
- Waist-to-Hip Ratio Calculator
- BMR Calculator
- TDEE Calculator
- Calorie Deficit Calculator
- Calorie Surplus Calculator
- Macro Calculator
- Daily Protein Calculator
- Calories Burned Calculator
- Daily Water Intake Calculator
- Weight Loss Rate Calculator
- Weight Gain Calculator
- Steps and Distance Calculator
- Running Pace Calculator
- Heart Rate Zones Calculator
- Running Split Calculator
- Race Time Predictor
- One Rep Max Calculator
- Barbell Plate Calculator
- Training Volume Calculator
- Wilks and DOTS Calculator
- Voltage Divider Calculator
- Series Resistor Calculator
- Parallel Resistor Calculator
- Resistor Color Code Calculator
- LED Resistor Calculator
- Voltage Drop Calculator
- Wire Gauge Calculator
- Single-Phase Power Calculator
- Three-Phase Power Calculator
- Power Factor Calculator
- Battery Runtime Calculator
- Battery Capacity Calculator
- Ah to Wh Converter
- Inverter Size Calculator
- Solar Panel Calculator
- Battery Charging Time Calculator
- RC Time Constant Calculator
- Capacitive Reactance Calculator
- Inductive Reactance Calculator
- LC Resonance Calculator
- Frequency Wavelength Calculator
- RMS Peak-to-Peak Converter
- Transformer Turns Ratio Calculator
- Capacitor Energy Calculator
- RLC Impedance Calculator
- Email Extractor
- URL Extractor
- Hashtag Extractor
- Number Extractor
- Unique Word Extractor
- Invisible Character Detector & Cleaner
- Paste Cleaner
- HTML Link Extractor
- HTML Text Extractor
- HEX Color Extractor
- URL Tracking Parameter Remover
- JSON Escape / Unescape
- JSON Sort Keys
- JSON Flatten / Unflatten
- Unicode Inspector
- Text to Unicode Escape Converter
- Text to Binary Converter
- Text to Hex Converter
- UUID Validator & Inspector
- Email Syntax Validator
- Markdown Table Generator
- HTML Table Generator
- Username Generator
- Fake Data Generator
- Image Comparison Slider
- Audio Cutter
- Merge Audio
- Change Audio Speed
- Change Audio Volume
- Reverse Audio
- Audio Fade In & Fade Out
- Stereo to Mono Converter
- Extract Left or Right Audio Channel
- Peak Normalize Audio
- Trim Audio Silence
- Mute Part of Audio
- Remove Part of Audio
- Split Audio
- Audio Silence Detector
- Audio Visualizer
- Audio File Inspector
- Swap Left and Right Audio Channels
- Audio Recorder
- Tone Generator
- Audio Channel Analyzer
- PDF to JPG
- JPG, PNG and WebP to PDF
- Merge PDF
- Split PDF
- Extract PDF Pages
- Reorder PDF Pages
- Rotate PDF
- Compress PDF
- Extract Images from PDF
- PDF to Text
- Remove PDF Pages
- Add Page Numbers to PDF
- Add Watermark to PDF
- Crop PDF
- CSS Gradient Generator
- CSS Border Radius Generator
- Flexbox Playground
- CSS Grid Playground
- HEX RGB HSL Converter
- Online Color Picker
- HTML Formatter
- Base64 Encoder and Decoder
- URL Encoder and Decoder
- UUID Generator
- Online HTML CSS JavaScript Editor
- JSON Formatter and Validator
- CSS Minifier
- JavaScript Minifier
- CSS Box Shadow Generator
- Crypto Profit Calculator
- Crypto Average Price Calculator
- Crypto Market Cap Calculator
- Crypto DCA Calculator
- Bitcoin Satoshi Converter
- Loan Calculator
- Savings Calculator
- Gross to Net Salary Calculator
- Business Days Calculator
- Work Hours Calculator
- Profit Margin Calculator
- Compound Interest Calculator
- Percentage Calculator
- Discount Calculator
- Tax Calculator
- Rule of Three Calculator
- Age Calculator
- Custom QR Code Generator
- Word Counter
- Unit Converter
- Image Compressor
- Image Resizer
- Image Converter
- Secure Password Generator
- Text Case Converter
- Days Between Dates Calculator
- Unit Price Calculator
- Regex Tester
- Unix Timestamp Converter
- Meta Tag Generator
- Open Graph Preview
- Lorem Ipsum Generator
- Markdown to HTML Converter
- HTML Entities Encoder and Decoder
- Favicon Generator
- robots.txt Generator
- XML Sitemap Generator
- Guided Breathing Online
- Box Breathing 4-4-4-4
- 4-7-8 Guided Breathing
- 5-4-3-2-1 Grounding Exercise
- Online Meditation Timer
- Coherent Breathing 5-5
- Guided Progressive Muscle Relaxation
- 1-Minute Breathing Exercise
- Extended Exhale Breathing
- Custom Breathing Timer
Featured tools
Quick access to some of Utilsha's most useful tools.
Percentage Calculator
Calculate percentages, increases, decreases, and percentage change with a clear explanation.
Math & StatisticsCustom QR Code Generator
Create custom QR codes with your logo and colors for URLs or text, then download them as PNG for free in your browser.
GeneratorsUnit Converter
Convert length, weight and mass, temperature, and volume across metric and US customary units.
ConvertersImage Compressor
Reduce JPEG, PNG, or WebP file size locally and download the result.
ImagesOnline HTML CSS JavaScript Editor
Write HTML, CSS, and JavaScript and see the result in an isolated preview inside your browser.
Web DevelopmentSecure Password Generator
Generate secure passwords with Web Crypto, configurable length and character groups, without sending them to a server.
Generators