All Free Online Tools
126 free tools and calculators. Everything runs in your browser — no signup. Tool inputs stay in your browser.
Freelance & Business Tools
View category →Upwork Fee Calc
Estimate take-home pay after Upwork platform fees.
Pomodoro Tracker
Track your work sprints and watch your billable earnings rise.
Rate Calculator
Calculate your ideal hourly rate based on living expenses.
Time Tracker
Simple time tracker for freelance projects.
Contract Builder
Generate standard freelance contracts and NDAs.
Payment Fee Calc
Calculate Stripe and PayPal fees for international B2B billing.
SaaS Metrics
Visualize churn rate, LTV, and CAC for subscription apps.
Date Calculator
Calculate duration between dates or add/subtract time.
Time Card Calc
Calculate total weekly hours and overtime pay.
Hours Calculator
Calculate work hours and convert to payroll decimals.
Invoice Generator
Create and download professional PDF invoices locally.
Reverse Salary Calc
Find the freelance hourly rate needed to hit a target salary after taxes and expenses.
Budgeting & Personal Finance
View category →Budget Planner
Plan your monthly budget and track expenses.
Salary to Hourly Calculator
Convert annual salary to hourly, weekly, and monthly pay (2,080-hour year).
ADP Paycheck Calculator
Estimate net take-home pay from hourly or salary wages.
Debt Snowball
Estimate payoff by clearing smallest balances first.
Auto Loan Payoff
Calculate interest savings from extra car loan payments.
Rule of 72
Estimate how long it takes to double your money with compound interest.
CD vs HYSA
Compare interest yields between locked CDs and liquid savings.
Percentage Calc
Calculate increases, decreases, and reverse percentages.
ROI Calculator
Calculate Return on Investment and annualized yield.
Percentage Increase
Calculate percentage growth from the numbers you enter.
Percent Change
Calculate percent change between two values.
Compound Interest
See how your money grows with compound interest over time.
Percentage Growth
Track YoY and MoM percentage growth between periods.
Real Estate & Logistics
View category →Square Footage Calc
Calculate total square footage for multiple rooms.
BRRRR Calculator
Analyze real estate investments using the BRRRR strategy.
Wholesale MAO
Maximum Allowable Offer calculator for real estate wholesalers.
House Hacking
Calculate mortgage offset and rental subsidy for multi-unit homes.
Concrete Calculator
Estimate volume and bag requirements for concrete pours.
Freight Calculator
Estimate shipping and freight costs for logistics.
Investment Calculator
Analyze real estate cash flow, Cap Rate, and ROI.
Trading & Risk Calculators
View category →Micro Futures Sizer
Estimate position sizes for MES, MNQ, and MYM.
Prop Firm Breakeven
Estimate what you need to pass a prop firm evaluation.
Position Size Calc
Standard position size calculator for Forex and Crypto.
Risk/Reward
Visualize risk vs reward ratios for your trades.
Profit Target
Calculate trailing drawdowns and profit targets.
E-commerce & Retail Tools
View category →Dropshipping Margin
Estimate profit margins including ad spend and fees.
Etsy Profit Calc
Calculate Etsy listing fees, transaction fees, and net profit.
Shipping Cost
Calculate dimensional weight and shipping costs.
Pricing Strategy
Estimate a retail price from cost and a target margin or markup.
ROI Calculator
Calculate return on investment and annualized yield from cost and final value.
Margin Calculator
Calculate profit margins instantly based on cost and revenue.
Amazon FBA vs FBM
Profit margin comparison between Amazon fulfillment methods.
Barcode Generator
Generate high-res UPC, EAN, and Code128 retail barcodes.
SEO & Content Tools
View category →UTM Builder
Generate campaign tracking URLs with proper parameters.
UTM Generator
Build Google Analytics tracking links with UTM parameters.
Keyword ROI
Estimate the monetary value of a ranking keyword.
Backlink Analyzer
Score a backlink from DR, traffic, and relevance you enter.
Readability Score
Check your content against the Flesch-Kincaid scale.
Random Word Generator
Generate random English words for brainstorming and naming.
Health & Fitness Calculators
View category →Calorie Calculator
Estimate daily calorie needs from BMR and activity.
Calorie Deficit
Calculate your TDEE and daily calorie target.
BMI Calculator
Check your Body Mass Index score and category.
1RM Calculator
Calculate your one-rep max and get weight tables.
Bench Press Calc
Estimate your bench press max safely.
Sleep Cycle
Optimize bedtime based on 90-minute REM cycles.
BAC Estimator
Estimate blood alcohol levels based on biological factors.
Pregnancy Due Date
Calculate your baby's arrival date and track pregnancy weeks.
Deadlift Calculator
Calculate your one-rep max deadlift from sub-max sets.
One Rep Max Calculator
Estimate your 1RM from a sub-max set across barbell lifts.
Squat Max Calculator
Find your one-rep max squat from any sub-max set.
Travel & Expat Utilities
View category →N-400 Tracker
Track travel days for US citizenship & physical presence.
Flight Time
Calculate total flight durations including layovers.
Packing List
Generate packing lists from climate, trip length, and travel type.
Time Zone
Convert between multiple time zones easily.
Currency
Convert currencies with daily mid-market rates.
Everyday Utilities & Converters
View category →Name Generator
Generate unique names for startups, fantasy, or babies.
Tip & Split
Calculate tips and split restaurant bills fairly.
Unit Converter
Convert between metric and imperial units for length and weight.
Age Calculator
Calculate your age in years, months, and days from the dates you enter.
Kitchen Units
Convert kitchen volume measures to weight for recipes.
Gas Cost Calc
Calculate fuel costs and split road trip bills with friends.
Pet Age Calc
Convert dog and cat years to human years with precision.
Tire Size Calculator
Compare two tire sizes and calculate speedometer differences.
Words to Pages
Estimate essay and book page counts from word counts.
Is What Percent Of
Find what percentage one number is of another.
Percent Off Calculator
Calculate sale prices and discount savings instantly.
What Is X% of Y
Calculate what percentage value a number represents.
Math & Academic Tools
View category →Anagram Solver
Unscramble letters instantly to find valid dictionary words.
Wordle Solver
Enter your guesses and colors to find matching words and a suggested next guess.
Spelling Bee Solver
Find every NYT Spelling Bee word, pangram, and point total from the hive letters.
Syllable Counter
Count syllables in a word, sentence, or haiku with a per-word breakdown.
Rhyme Finder
Find perfect and near rhymes, then filter by syllable count.
Scrabble Word Finder
Find the highest-scoring Scrabble words from your rack, with official point values.
Word Unscrambler
Unscramble any letters into every valid word, sorted by length and score.
Crossword Solver
Find words that fit a pattern with known letters and blanks.
Words With Friends Word Finder
Find high-scoring WWF plays from your tiles with Words With Friends scoring.
Word Frequency Counter
Count how often each word appears in any text you paste.
Word Scramble Generator
Scramble words into puzzles for games, worksheets, and classrooms.
Fraction Calculator
Add, subtract, multiply, and divide fractions in your browser.
Random Number Gen
Generate random integers in a custom range (Math.random or browser CSPRNG).
GPA Calculator
Calculate high school and college GPAs in your browser.
Integral Calculator
Calculate definite integrals in your browser with numerical methods.
Privacy & Security Tools
View category →Web Developer Utilities
View category →JSON Formatter
Validate and beautify JSON payloads.
Base64 Encoder
Encode and decode strings or files to Base64.
QR Code Gen
Generate customizable SVG/PNG QR codes.
Regex Tester
Test and debug regular expressions in real-time.
CSS Minifier
Minify and compile CSS styles.
LLM API Cost
Estimate token overhead for OpenAI, Claude, and Gemini.
String Formatter
Instantly convert text to camelCase, snake_case, PascalCase, or kebab-case.
JSON to CSV
Flatten and convert nested JSON objects into tabular CSV data.
Meta Tag Gen
Generate HTML meta tags, Twitter Cards, and Open Graph data.
UUID Generator
Instantly generate bulk v4 UUIDs / GUIDs.
JWT Decoder
Decode JWT header and payload claims in your browser.
HTML Entity Encoder
Safely encode and decode HTML entities to prevent XSS.
Markdown to HTML
Convert Markdown to clean HTML with live preview and XSS protection.
Text Diff Checker
Compare two text blocks or code snippets to find the exact differences.
Unix Timestamp
Convert Unix epoch times to human-readable dates and vice versa.
IP Subnet Calculator
Calculate network CIDR ranges, broadcast addresses, and usable hosts.
JSON to YAML
Instantly translate JSON configurations into clean, readable YAML.
URL Encoder/Decoder
Safely encode URLs for HTTP parameters or decode percent-encoded strings.
SQL Formatter
Format SQL with consistent indentation and uppercase keywords.
Media & File Utilities
View category →Meme Generator
Create custom image memes with classic top and bottom text.
PDF Merger
Merge multiple PDFs in your browser.
Image Resizer
Batch resize and compress images.
Video Compress
Calculate optimal bitrates for video compression.
Audio Trimmer
Cut and trim MP3 files.
Color Picker
Extract colors from images and convert HEX/RGB.
Social Media Growth Tools
View category →TikTok RPM
Estimate your Creator Rewards Program earnings.
Hashtag Predictor
Suggest broad, niche, and trending hashtags for your topic.
Engagement Rate
Calculate engagement rate from the likes, comments, and followers you enter.
Follower Growth
Predict how long it will take to hit your follower goals.
Bio Generator
Create compelling social media bios.
Sponsorship Calc
Calculate fair brand deal rates for YouTube integrations.