Every calculator, converter, generator, and utility published on Tutomod, in one place. All tools run in your browser: no sign-ups, no downloads, nothing is sent to a server.
This index updates automatically as new guides are published. It currently lists 70 articles.
- Markdown Table Generator: CSV or Text to Markdown in One Click
- Time Zone Meeting Planner: Find the Overlap That Actually Works
- Aspect Ratio Calculator: Resize Without Distorting Anything
- Screen PPI Calculator: Pixel Density of Any Display
- Reaction Time Test: Measure Your Reflexes in Milliseconds
- Inflation Calculator: Future Cost and Purchasing Power
- CAGR Calculator: Compound Annual Growth Rate of Any Investment
- Prime Number Checker and Generator (Up to 50,000)
- Expense Splitter: Settle Group Costs With the Fewest Payments
- Final Grade Calculator: What Score Do I Need on the Exam?
- Text Compare Tool: Diff Two Texts Line by Line
- Download Time Calculator: How Long Any File Takes to Download
- GPA Calculator: College and High School GPA on the 4.0 Scale
- Typing Speed Test: WPM and Accuracy in 60 Seconds
- Cron Expression Explainer: Translate Crontab to Plain English
- SHA Hash Generator: SHA-1, SHA-256 and SHA-512 Online
- Regex Tester Online: Live Match Highlighting With Flags
- Random Number Generator: Ranges, No Repeats, Sorted Lists
- Currency Converter With Live Exchange Rates (160+ Currencies)
- 50/30/20 Budget Calculator: Split Your Paycheck the Smart Way
- Savings Goal Calculator: Monthly Deposit to Hit Any Target
- Running Pace Calculator: Pace per km, per Mile, and Race Predictions
- Paint Calculator: How Many Gallons (or Liters) Do You Need?
- Electricity Cost Calculator: What Any Appliance Costs to Run
- Drive Time Calculator: Trip Duration and Arrival Time
- Unit Price Calculator: Compare Products and Find the Better Deal
- Sales Tax and VAT Calculator: Add Tax or Remove It Correctly
- Discount Calculator: Final Price, Savings and Stacked Discounts
- Salary to Hourly Calculator: Convert Pay Both Ways (2026)
- Pregnancy Due Date Calculator: Weeks, Trimester and Timeline
- Ovulation Calculator: Fertile Window and Next Period Dates
- Body Fat Calculator: US Navy Method With Just a Tape Measure
- Daily Water Intake Calculator: How Much Water Should You Drink?
- Calorie Calculator With Macros: Daily Calories, Protein, Carbs and Fat
- Google SERP Preview Tool: See Your Title and Meta Before Google Does (Free Tool)
- Random Team Splitter: Balanced Groups in One Click (Free Tool)
- Trigonometry Calculator: sin, cos, tan and Inverse Functions (Free Tool)
- Dice Roller and Coin Flip: d4 to d100, Up to 10 Dice (Free Tool)
- Lorem Ipsum Generator: Classic and Tech-Flavored Placeholder Text (Free Tool)
- URL Slug Generator: SEO-Friendly Links From Any Title (Free Tool)
- Text Reverser: Flip Characters, Words, or Turn Text Upside Down (Free Tool)
- Number to Words Converter: Spell Out Any Amount (Free Tool)
- Roman Numeral Converter: Numbers to I, V, X, L, C, D, M (Free Tool)
- Time Duration Calculator: Hours Between Two Times, Minus Breaks (Free Tool)
- UUID Generator: Cryptographic v4 IDs in Bulk (Free Tool)
- Number Base Converter: Binary, Decimal, Hex and Octal (Free Tool)
- World Clock: Live Time in 30+ Cities (Free Tool)
- Morse Code Translator: Text to Dots and Dashes, Both Ways (Free Tool)
- Color Code Converter: HEX to RGB to HSL, With Picker (Free Tool)
- Countdown Timer and Stopwatch: With Alarm Sound (Free Tool)
- Base64 Encoder and Decoder: Unicode-Safe, In-Browser (Free Tool)
- Random Name Picker: Fair Draws for Giveaways and Groups (Free Tool)
- URL Encoder and Decoder: Percent-Encoding Done Right (Free Tool)
- JSON Formatter and Validator: Pretty-Print, Minify, Find Errors (Free Tool)
- Text Case Converter: UPPER, lower, Title Case and More (Free Tool)
- Word Counter: Words, Characters, Reading Time and Keywords (Free Tool)
- Password Strength Checker: How Long Would Yours Survive? (Free Tool)
- Random Password Generator: Strong Passwords in One Click (Free Tool)
- Weighted Grade Calculator: Final Course Grade From Scores and Weights (Free Tool)
- Ohm's Law Calculator: Voltage, Current, Resistance and Power (Free Tool)
- Quadratic Equation Solver: Roots for ax² + bx + c = 0 (Free Tool)
- Date Difference Calculator: Days, Weeks and Months Between Dates (Free Tool)
- Trip Fuel Cost Calculator: Gas, Distance and Split (Free Tool)
- Age Calculator: Exact Age in Years, Months and Days (Free Tool)
- Unit Converter: Length, Weight, Temperature and Volume (Free Tool)
- Tip Calculator: Split the Bill With Any Group Size (Free Tool)
- Compound Interest Calculator: Watch Savings Grow With Monthly Deposits (Free Tool)
- Loan Payment Calculator: Monthly Payment and Total Interest (Free Tool)
- BMI Calculator: Body Mass Index in Metric or Imperial (Free Tool)
- Percentage Calculator: X% of Y, Percent Change and More (Free Tool)
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