Free In-Browser Utilities & Calculators
Fast, private, client-side tools for text manipulation, calculations, unit conversions, image generation, and random selection. Zero uploads, zero delays.
Text Utilities
Clean, format, count, and manipulate text strings instantly.
Conversion Tools
Accurate unit, timezone, roman numeral, and number-to-words converters.
Calculators
Instant mathematical, financial, health, and date calculators.
Generators
Generate signatures, invoices, favicons, OG social cards, and placeholders.
Fun & Random
Cryptographically random decision makers, dice, coins, and numbers.
What is In-Browser Utilities & Calculators?
The Utilities collection covers everyday tasks: count words and characters, remove duplicate lines, sort, find and replace, clean whitespace and line breaks, and read text aloud. Convert units, time zones, Roman numerals and numbers to words; calculate percentages, age, days between dates, BMI, loan EMIs, tips, discounts and GST; create invoices as PDF, draw signatures, and generate favicons, Open Graph images and placeholder images; or pick a random winner, roll dice, flip a coin and generate random numbers. Calculations update as you type and nothing you enter is stored or sent anywhere.
How to use In-Browser Utilities & Calculators
- 1
Pick a utility
Choose a text tool, converter, calculator, generator or random tool.
- 2
Enter your values
Type or paste text or numbers; results update instantly.
- 3
Copy or download
Copy the result or download the generated file.
Frequently asked questions
Can the text tools handle long documents?
Yes. Tens of thousands of lines are processed in a moment in the browser.
Are my numbers or text saved?
No. Inputs exist only in your browser tab and disappear when you close it.
Are the random tools fair?
Yes. The picker, dice, coin and number generator use the browser’s cryptographically secure random generator.
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