LowercaseOnline — Free Online Text Tools

🔧 All Tools

58 categories · free, no signup, runs in your browser.

📝

Text & Writing

21 tools
🔤 Case Converter 📊 Character Count 📝 Word Counter 📊 Word Frequency 🔀 Text Diff 📋 Sort List 🔄 Remove Duplicates 🧹 Clean Text 🔁 Text Repeater ↩ Reverse Text 📄 Lorem Ipsum ✨ Fancy Text 👻 Invisible Char 📝 Markdown Preview 🔀 String Escape 🔗 Slug Generator 🔤 Naming Case 📚 APA Citation 📡 Morse Code 🔐 ROT13 Cipher 🔤 Title Case
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Dev Tools

34 tools
📋 JSON Formatter 📄 YAML Formatter 📄 HTML Formatter 📋 XML Formatter 📜 JS Formatter 🎨 CSS Formatter 🔄 CSV ↔ JSON 🔒 Encode & Decode 🔒 Base64 Encode 🔓 Base64 Decode 🔒 Base64URL Encode 🔓 Base64URL Decode 🔗 URL Encode 🔗 URL Decode 🔑 MD5 Hash 🔒 SAML Encode 🔓 SAML Decode 📋 JSON Formatter 🔑 Hash Generator 🪪 JWT Decoder 🔍 Regex Tester 🔢 Base Converter 💾 Text to Binary 🌐 IP Subnet Calc ⏱ Unix Timestamp 📅 Cron Expression 🌐 Timezone Converter 🤖 Fake Data Generator 🛒 Amazon Tools ⚖ Page Weight 🔢 IEEE 754 Float ✍ Passive Voice Check 📚 KDP Royalty 🌿 Plant Watering
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Marketing

20 tools
🔗 UTM Builder 🔍 Meta Tag Preview 📢 Google Ads Copy 📣 Ad Copy Generator 📱 Social Media Counter #️⃣ Instagram Hashtags 🧵 Twitter Thread 📰 Headline Analyzer 💡 Blog Idea Generator 📧 Subject Line Analyzer 🚫 Spam Word Checker ✉️ Email Preheader 📖 Readability Checker 🔑 Keyword Density 📐 Image Aspect Ratio 📈 Marketing ROI 🤖 AI Token Calculator 📋 Marketing Brief 🔍 SERP Checker ✨ Brand Name Generator
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Calculators

11 tools
🤑 Tip Calculator % Percentage 🎂 Age Calculator 📏 Unit Converter 💰 Currency Converter ⏱ Countdown Timer 📅 Date Calculator 🏦 Loan Calculator ⚖️ BMI Calculator 🧾 VAT Calculator 🏷 Discount Calculator
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Generators

8 tools
🔐 Password Generator 🔑 UUID Generator 🎲 Random Number 🎨 Random Color 📱 QR Code 💡 Name Generator 🎥 YT Title Generator 🎉 Wheel of Names
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Real Estate

17 tools
🏦 Mortgage Calculator 🏠 Home Affordability ⚖️ Rent vs. Buy 📄 Closing Cost Estimator 💰 Down Payment Planner 📊 Rental Property Analyzer 📈 Rental Yield Calculator 🔨 Property Flip Calculator 💵 Rental Cash Flow 🏦 DSCR Calculator 📈 Rent Increase Calculator 📅 Lease Renewal Tracker 🔐 Security Deposit Calc 🏚 Vacancy Cost Calculator ✂️ Commission Split Calc 🏷 Listing Price Estimator 🎪 Open House ROI
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Sales

16 tools
📧 Cold Email Generator 💼 LinkedIn Message 📞 Voicemail Script 🔄 Follow-up Sequence ✅ Deal Qualifier 🛡 Objection Handler 👤 Buyer Persona Builder 📋 Call Script Builder 📅 Meeting Agenda 💰 Commission Calculator 📈 Sales ROI Calculator 🏷 Discount Analyzer 🎯 Sales Forecast 📄 Quote Builder 🏆 Win/Loss Tracker 📊 Sales KPI Dashboard
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Legal

15 tools
📋 Document Checklist 📚 Clause Library ✉️ Legal Letter Generator 🔏 NDA Generator ⏱ Billable Hours Calc 💰 Contingency Fee Calc 📅 Statute of Limitations ⚖️ Court Deadline Calc 🤝 Settlement Calculator 📖 Citation Formatter 📄 Retainer Builder 🗓 Case Timeline 📕 Legal Glossary 💲 Legal Fee Estimator 📋 Deposition Prep
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Retail & E-commerce

17 tools
📦 FBA Fee Calculator 📢 Amazon PPC Calc 🏷 Retail Markup Calc 📊 Sell-Through Rate ⚖️ Price Per Unit 🎟 Coupon & Cashback 📈 BSR Sales Estimator 🔄 Inventory Reorder ⭐ Listing Quality Scorer 📦 Bundle Profit Calc ⭐ Review Rate Estimator 📉 Shrinkage Calculator 🛍 Open-to-Buy Calc ⚖️ Break-Even Units 📅 Seasonal Forecast 🎁 Loyalty Points Value 🏷 Black Friday Analyzer
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Fulfillment & Shipping

18 tools
📦 Dimensional Weight 🚛 Freight Class Calc 🏭 Safety Stock Calc 📊 EOQ Calculator 🌍 Landed Cost Calc 📬 Shipping Cost Est. 🗺 Shipping Zone Calc ⏰ Carrier Cut-Off Times 🏭 3PL Cost Comparator 🏢 Warehouse Space Calc 📅 Fulfillment SLA ↩️ Returns Rate Calc 📆 Days of Inventory 🌍 Customs Duty Est. 📦 Box Size Optimizer 💰 Packaging Cost Calc 📦 Void Fill Estimator 🧾 Pick & Pack Cost
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Electrical

17 tools
⚡ Ohm's Law Calculator 🔌 Voltage Drop Calc 🔧 Circuit Breaker Calc 💡 Lumens to Watts 🏠 Room Lighting Calc 💚 LED Savings Calc 🔌 Wire Gauge Calc ⬜ Conduit Fill Calc ⚡ Power Factor Calc 🔺 Three-Phase Power 🌡 Color Temperature 💡 Electricity Cost Calc ⚙️ Generator Size Calc 🔋 EV Charging Cost 📊 AWG Wire Chart 📖 NEC Code Reference ⚡ Electrical Symbols
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Solar & Energy

17 tools
☀️ Solar System Sizing ⚡ Solar Energy Output 💰 Solar ROI Calculator 🔄 Net Metering Calc 🌱 Carbon Offset Calc 🏠 Roof Solar Capacity 📐 Panel Layout Planner 🔋 Battery Storage Sizing ⚡ Inverter Size Calc ☀️ Peak Sun Hours 📉 Panel Degradation 🌤 Shading Loss Est. 💰 Solar Payback Period 💳 Solar Financing 📄 Bill Offset Calc ⚖️ Panel Comparator 🔌 Grid vs Off-Grid
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Swimming Pools

18 tools
💧 Pool Volume Calc 🧪 Pool Chemical Calc 🧴 Chlorine Dosage ⚗️ Pool Shock Calc 🌊 Saltwater Pool Calc ⚙️ Pool Pump Sizing 🌡 Pool Heater Sizing 💡 Pool Running Cost ☀️ Pool Evaporation ⏱ Pool Filling Time 🏗 Pool Construction Cost 📐 Pool Decking Calc 🔒 Pool Fence Calc 🧪 pH Adjustment Calc ⚗️ Cyanuric Acid Calc ⏱ Pump Runtime Calc ❄️ Winterization Checklist 🌸 Pool Opening Checklist
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Equity & Comp

12 tools
📊 RSU Calculator 📈 Stock Option Calc 🚀 Exit Value Projector 🔢 Dilution Calculator 📅 Vesting Visualizer 💹 ESPP Calculator 🧾 Equity Tax Estimator 💼 Total Comp Calculator ⚖️ Liquidation Preference 💸 Option Exercise Calc 💼 Carry Calculator 🚀 Startup Equity %
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Design

8 tools
🎨 Color Converter 🎨 Color Palette 🎨 Color Contrast 🌈 CSS Gradient 🌑 Box Shadow ⬛ Border Radius 🖼 Image to Base64 😀 Emoji Picker
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Influencer & Creator

14 tools
📊 Engagement Rate 🤖 Fake Follower Check 📈 Audience Growth Rate 💰 Sponsored Post Rate 🤝 Brand Deal Value ▶ YouTube Revenue 🎵 TikTok Earnings 📋 Media Kit Builder 🔗 Affiliate Commission 📅 Content Calendar 📊 Collab ROI ▶ YouTube CTR & RPM 📸 Instagram Format #️⃣ Hashtag Classifier
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Arts & Crafts

54 tools
🧵 Fabric Yardage 📐 Pattern Size Grader 📏 Garment Ease 🧵 Elastic Length 🧵 Thread Estimator 🤐 Zipper Selector 📏 Seam Allowance 🔢 Stitch Count Resizer 🧶 Knitting Gauge 🧶 Yarn Yardage 🧶 Yarn Weight Guide 📌 Needle Converter 📌 Hook Converter 🔢 Inc/Dec Calculator 🧸 Amigurumi Sizing 🟩 Granny Square Planner 🧮 Stitch Multiple Check 🟦 Quilt Block Calc 🧵 Quilt Fabric Calc ◪ HST Calculator 📐 Quilt Binding 🛏 Batting Guide 🎨 Quilt Color Planner ✂ Cross-Stitch Fabric 🧵 Cross-Stitch Thread 🎨 Cross-Stitch Colors ⭕ Embroidery Hoop 📿 Bead Bracelet 💍 Ring Size Converter 🔧 Wire Wrap Calc 🔗 Jump Ring Guide 📿 Bead Count Calc ⚖ Metal Sheet Weight 🕯 Candle Wax Calc 🕯 Wick Size Guide 🕯 Candle Batch Calc 🌸 Fragrance Blending 🧪 Resin Mix Ratio 🧪 Resin Mold Volume 🎨 Resin Pigment Guide 🪢 Macramé Cord Calc 🪢 Macramé Yardage 🪢 Fringe Calculator 📄 Paper Weight 🎴 Card Making Calc ✉ Envelope Guide 🦢 Origami Paper Calc 🎨 Color Mixing Guide 💰 Craft Cost Calc 📏 Scale Ruler Converter 🎨 Model Paint Thinner 🟡 LEGO Stud Converter 🖼️ Canvas Size Calculator 🎨 Colour Theory Wheel
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Retro Gaming

17 tools
🕹 Console Spec Compare 📺 Retro TV Signal 🔋 Cartridge Battery 🔌 Power Supply Ref 📺 PAL/NTSC Calc 🎮 How Old Is My Game 🕹 Game Genie Decoder 💾 ROM Header Decoder 🖥 Emulator Reference 📐 Retro Aspect Ratio 🎨 Retro Color Palette ⏱ Frames to Ms ⏱ Speedrun Splits 🖼 Sprite Sheet Calc 🖼 Pixel Art Canvas ☑ CIB Checklist 🔧 Capacitor Guide
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Investing

23 tools
📈 Compound Interest 📊 CAGR Calculator ✌ Rule of 72 💸 Inflation Calculator 📅 DCA Calculator 📊 P/E Ratio 💰 Dividend Yield 🔄 DRIP Calculator 📐 Position Size 💹 Stock P&L 🧮 Average Cost Basis ✂ Stock Split Calc 💸 Fund Fee Impact ⚖ Portfolio Rebalancer 🥧 Asset Allocation 🏖 Retirement Calc 🏦 Safe Withdrawal 🔥 FIRE Calculator 🏦 401k Calculator 📊 Sharpe Ratio 📜 Options P&L 📉 Short Selling Calc 🧾 Capital Gains Tax
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Mobile & Carriers

20 tools
📡 Carrier Plan Comparator 🧾 Phone Bill Analyzer 💰 MVNO Savings Calc 🗺 Coverage Explainer 👨‍👩‍👧 Family Plan Savings 📲 Trade-In Estimator 💳 Upgrade Cost Calc 💾 Phone Storage Calc 📊 Phone Specs Compare 🔌 eSIM vs SIM Guide ✈ Roaming Calculator 🌍 Travel SIM Compare 📶 Data Usage Estimator 📡 Hotspot Data Calc ⚡ 5G vs LTE Guide 💳 Phone Financing Calc 📋 ETF Calculator 📡 Network Band Checker 🔓 SIM Unlock Guide ⚙ APN Settings
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Car & Auto

25 tools
🔋 Battery Health Check ❄ Battery CCA Calc ⚡ Alternator Calculator 🔌 Fuse Size Guide 🔋 Battery Charge Time 🛢 Oil Change Calc 🌡 Coolant Mix Calc 🔧 Engine Displacement ⛽ MPG Calculator 🔄 Tire Pressure Calc 🔄 Tire Size Calculator 🔍 Tire Tread Depth 🔩 Wheel Bolt Pattern 🔄 Tire Rotation Guide 🛑 Brake Pad Life 🛑 Stopping Distance 🔧 Coilover Spring Calc 📅 Maintenance Schedule ⏱ Timing Belt Checker ⚡ Spark Plug Gap Guide 🔧 DIY Repair Cost 📉 Car Depreciation ⚡ Gas vs Electric 🚛 Towing Capacity 🔍 OBD2 Code Lookup
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Health & Wellness

16 tools
💧 Water Intake Calculator 🔥 Calorie Deficit Calc ⚡ BMR / TDEE Calculator 🥩 Macro Calculator 🥗 Calorie Density Compare 🍱 Meal Prep Calculator ⏱ Intermittent Fasting Guide 🏋 One Rep Max Calculator 📊 Body Fat % Estimator ❤ Heart Rate Zone Calc 👟 Steps to Calories 😴 Sleep Cycle Calculator ⚖ BMI Calculator 🩺 Blood Pressure Checker 💪 Protein Intake Calculator ☕ Caffeine Half-Life Calc
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Cooking & Kitchen

21 tools
📏 Recipe Scaler 🔄 Recipe Unit Converter 🔁 Ingredient Substitution 🥩 Cooking Yield Calculator 🥄 Kitchen Measurement Converter 🎂 Baking Pan Size Converter 🌡 Oven Temperature Converter 🧈 Butter Converter 🌾 Flour & Sugar Weight 🥩 Meat Cooking Time 🦃 Turkey Roast Timer 🍝 Pasta & Grain Water Ratio 🍟 Frying Oil Temp Guide 🍞 Yeast Converter 🫓 Bread Hydration Calculator 🧁 Baking Soda vs Powder 🍪 Cookie Scoop Size Guide 💰 Recipe Cost Calculator 🧊 Food Storage Life Guide 🍺 Alcohol to Calories ☕ Coffee Brew Ratio
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Music & Instruments

5 tools
🎹 Chord Finder 🎼 Scale Explorer 🎸 Capo Calculator 🥁 BPM to Milliseconds 🎵 Transposition Calc
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Street Art Maps

3 tools
🖼 Jorit Mural Map 🌈 Kobra Mural Map 🐀 Banksy Artwork Map
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Formula 1

5 tools
🏆 F1 Points Calculator 🏁 F1 Circuit Guide 🔴 F1 Tyre Guide 🕐 F1 Race Schedule 📻 F1 Team Radio Glossary
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Photography

10 tools
📷 Exposure Triangle 🔭 Depth of Field 🌅 Golden Hour Finder 🔲 ND Filter Calculator 🔍 Focal Length Compare 📊 Histogram Guide 📽️ Film Reciprocity Calc ⚡ Flash Guide Number Calc 🎬 Frame Rate & Shutter 📐 Composition Guide
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Home & DIY

5 tools
🎨 Paint Calculator 🪵 Flooring Calculator 🧱 Concrete Calculator 🖼 Wallpaper Calculator ⬜ Tile Calculator
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Garden & Outdoors

8 tools
🌱 Fertilizer Calculator 💧 Rainwater Harvesting 🌻 Planting Calendar 🚿 Irrigation Calculator 🪴 Houseplant Light Guide 🌱 Pot Size Calculator 🧪 NPK Dilution Calculator ⚗️ pH Calculator
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Gaming Tools

4 tools
🔋 Save Battery Guide ⏱ Emulator Lag Calculator ⏰ Completion Time Estimator 🏆 Trophy Rarity Estimator
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Cooking & Food

6 tools
🌡 Sous Vide Guide 🍷 Wine Pairing Guide 🧀 Cheese Pairing Guide ☕ Coffee Roast Guide 🍵 Kombucha Brew Guide 🍷 Wine Gravity Calculator
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Running & Fitness

4 tools
👟 Running Pace Calculator 🏅 Marathon Paces ❤️ VO2 Max Estimator 🔥 Calories by Activity
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Developer Tools

4 tools
🔤 Regex Tester 🌐 HTTP Status Codes 🎨 Color Palette Generator 🔌 WebSocket Tester
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Travel

5 tools
🛫 Layover Calculator 🧳 Packing List Generator 🛡 Travel Insurance Guide 🕐 World Clock 🛂 Visa Requirement Lookup
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MotoGP

4 tools
🏁 MotoGP Circuit Guide 🔵 MotoGP Tyre Guide ⚙️ Gear Ratio Calculator 🚴 Tour de France Climbs
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Astronomy

5 tools
🪐 Planet Visibility ☄️ Meteor Shower Calendar 🔭 Telescope Eyepiece Calc 🌑 Bortle Dark Sky Guide 🌕 Moon Phase Calendar
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Sailing & Boating

5 tools
⚓ Anchor Scope Calc ⛽ Boat Fuel Range 📐 Sail Area / Displacement 🌊 Tidal Stream Guide 📻 VHF Marine Channels
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Fashion & Clothing

5 tools
👕 Clothing Size Converter 👟 Shoe Size Converter 🧺 Fabric Care Symbols 👗 Capsule Wardrobe Planner 🤵 Suit Fit Guide
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Music Production

5 tools
🎵 BPM Note Values 🎚️ EQ Frequency Guide 🎛️ Compression Guide 📊 Mixing Headroom Calc 🏛️ Reverb Room Size Guide
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Powerlifting

4 tools
🏋️ Barbell Plate Calculator ⚖️ Wilks / DOTS Calculator 💪 RPE / RIR Converter 📈 Progressive Overload Planner
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Tea

3 tools
🫖 Tea Brewing Guide 🌱 Tea Type Explorer ⚖️ Tea Water Ratio Calc
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Events & Celebrations

3 tools
💍 Wedding Budget Calculator 🎉 Party Food Calculator 📅 Wedding Timeline Generator
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Philosophy & Thinking

3 tools
🧭 Decision Framework Selector ⚖️ Stoic Reflection Prompts 🧠 Cognitive Bias Guide
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Typography & Design

5 tools
🔤 Type Scale Calculator 🔡 Font Pairing Guide 📖 Reading Time Estimator 📄 Screenplay Timing Calculator 📝 Three-Act Structure Planner
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Science & Maths

3 tools
🔬 Scientific Notation Converter ⚗️ Periodic Table 🧪 pH Calculator
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Aviation

4 tools
🌦️ METAR Decoder ⛰️ Density Altitude Calculator ✈️ Flight Time Estimator 🛫 Runway Wind Calculator
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Camping & Outdoors

4 tools
🔥 Campfire Wood Estimator ⛺ Tent Capacity Guide 💧 Water Purification Guide 🥾 Pace Count Calculator
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Watches

3 tools
⌚ Watch Case Size Guide 🪢 Watch Strap Guide 🕰️ Watch Power Reserve
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Tabletop & Wargames

2 tools
🗺️ Campaign Map Scale 🟡 LEGO Stud Converter
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Tech & History

1 tools
📡 Dial-Up Speed Comparison
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Street Art Maps

4 tools
👬 Os Gemeos Map 🪨 Vhils Artwork Map 🐺 ROA Animal Murals 👤 RONE Mural Map
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Drinks & Brewing

6 tools
🍸 Cocktail Dilution Calc 🍶 Sake Grade Guide 🍺 Beer IBU Guide 🧪 Homebrew ABV Calculator 🥃 Whisky Age Guide 🍋 Cocktail Substitution Guide
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BBQ & Grilling

5 tools
🍖 BBQ Smoking Guide 🍞 Sourdough Schedule 🍝 Pasta Sauce Pairing 🫒 Smoke Point Guide 🧼 Soap Lye Calculator
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Sports & Outdoor

11 tools
🧗 Climbing Grade Converter ⛳ Golf Handicap Calculator 🏊 Swim Pace Calculator 🏹 Archery Arrow Spine Calc 🛶 Kayak Trim Guide 🎣 Fishing Knot Guide 🪢 Rope Knot Guide 🧥 Cold Weather Layering 🏄 Surfboard Volume Calc 🌊 Wetsuit Thickness Guide ⛰️ Hiking Difficulty Estimator
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Making & Materials

9 tools
🚬 Cigar Size Guide 💿 Vinyl Side Time Estimator 🏺 Pottery Shrinkage Calc 📚 Book Spine Calculator 🪡 Leather Thickness Guide 🖨️ Filament Cost Calculator 📏 Layer Height Guide ⏱ Print Time Estimator 🔲 Infill Pattern Guide
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Music & Audio

7 tools
🎹 MIDI Velocity Guide 🎵 Tuning System Comparison 💿 Vinyl Side Time Estimator 📦 Record Storage Calculator 💿 Stylus Replacement Guide 🎵 Turntable Setup Guide 🔊 Hi-Fi Impedance Guide
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World & Knowledge

8 tools
💾 Data Storage Units Guide 🗺️ Map Projection Guide 📅 Calendar System Converter 🚩 Flag Color Guide ⚡ Lightning Distance Calc 🔤 False Cognates Guide 📢 IPA Phonetics Guide 📚 Language Hours Calculator
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Productivity

6 tools
🎯 Behavioural Interview Practice 🎲 Random Line Picker 🍅 Pomodoro Planner 🧠 Spaced Repetition Calc 👶 Baby Sleep Schedule 📱 Screen Time Cost Calc