Free Online Tools: Calculators, Converters & Developer Utilities
Fast, private calculators, converters, and developer utilities — everything runs in your browser, nothing leaves your device.
SIP Calculator
Calculate returns on your monthly SIP investment with interactive charts.
Discount Calculator
Calculate sale price, find discount percentage, or reverse to original price.
Percentage Calculator
Solve any percentage problem — increase, decrease, difference, and more.
BMI Calculator
Check your Body Mass Index instantly with height and weight.
Date Calculator
Days between dates, add/subtract days, business days. Covers date duration and day calculator.
Age Calculator
How old am I? Find your exact age in years, months, and days from your date of birth.
Age Difference Calculator
Find the exact age gap between two people — who is older and by how much.
Chronological Age Calculator
Calculate exact chronological age for educational and pediatric assessments.
Aspect Ratio Calculator
Find missing width or height for any ratio. Scale dimensions, get ratio from size. 16:9, 4:3 presets.
Statistics Calculator
Mean, median, mode, std dev, variance, quartiles, IQR — from any data set.
Grade Calculator
Calculate final grade from weighted assignments. GPA calculator included.
Tip Calculator
Calculate tip amount and split the bill between any number of people.
Mortgage Calculator
Calculate monthly mortgage payment with down payment, rate, and full amortization schedule.
Loan Calculator
Calculate monthly payment, total interest, and amortization schedule for any loan.
Invoice Generator
Create professional invoices free — logo, line items, tax, bank details, PDF download.
Loan EMI Calculator
Calculate monthly EMI for home, car, or personal loans.
GST Calculator
Calculate GST at 5%, 12%, 18%, or 28% with CGST and SGST split.
FD Calculator
Calculate fixed deposit maturity amount and interest earned.
FLAMES Calculator
Find your relationship — Friends, Lovers, Affectionate, Marriage, Enemies, or Siblings!
FD Calculator
Calculate fixed deposit maturity amount and interest with compound interest options.
Compound Interest Calculator
Calculate compounding interest with principal, rate, frequency, and monthly contributions.
Gratuity Calculator
Calculate gratuity under Payment of Gratuity Act 1972. ₹20L cap, eligibility check.
Statistics Calculator
Mean, median, mode, std dev, variance, quartiles, IQR from any data set.
Aspect Ratio Calculator
Find missing width or height for any aspect ratio. 16:9, 4:3 presets included.
Epoch / Unix Converter
Live Unix timestamp ticker. Convert between epoch and human dates — seconds, ms, microseconds. Code examples for 10 languages.
Week Number Calculator
What week is it? ISO week number, week start/end dates, full year calendar with clickable week rows.
Snowflake ID Decoder
Decode Discord, Twitter/X, Instagram, and Mastodon IDs. Reveals the hidden creation timestamp in any Snowflake ID.
Specialized Timestamp Converter
LDAP, .NET DateTime ticks, NTP, WebKit, Cocoa/Apple, SAS, Excel OADate, and Unix Hex — all 8 formats in one tool.
ISO Duration Converter
Parse PT1H30M, P1Y2M3DT4H — the duration strings powering every REST API, Kubernetes config, and AWS Lambda timeout.
Leap Year Calculator
Is this year a leap year? Find the next Feb 29, count leap years between any two dates. All years from 1 to 9999.
JSON Formatter
Format, validate, and minify JSON with syntax highlighting.
Base64 Encoder
Encode text to Base64 format instantly in your browser.
Base64 Decoder
Decode Base64 strings back to plain text.
QR Code Generator
Create QR codes for URLs, text, email, phone, WiFi — download as PNG free.
Scientific Calculator
Full scientific calculator — sin/cos/tan, log, ln, powers, roots, memory, and more.
Binary to Decimal
Convert binary to decimal, hex, and octal. Step-by-step working shown.
HEX to RGB Converter
Convert HEX color codes to RGB, HSL and CSS values instantly.
Color Picker & Converter
Pick colors and convert between HEX, RGB, and HSL formats.
CSS Gradient Generator
Create linear, radial, and conic CSS gradients. 12 presets, copy CSS instantly.
Markdown to HTML
Convert Markdown text to clean HTML with live preview.
Lorem Ipsum Generator
Generate placeholder text in paragraphs, sentences, or words.
Character Counter
Count characters with platform limits for Twitter, Instagram, LinkedIn, SMS.
Number to Words
Convert any amount to English words. Indian (lakhs/crores) and international formats.
Text Repeater
Repeat any word or phrase any number of times with custom separator.
Random Word Generator
Generate random nouns, verbs, adjectives. Filter by length and starting letter.
Online Notepad
Auto-saving online notepad — no login, no account. Download as .txt.
Typing Speed Test
Test your WPM and accuracy. 30s, 1min, and 3min tests with 3 difficulty levels.
Word Counter
Count words, characters, sentences, paragraphs, and reading time.
Capitalize My Title
Capitalize titles correctly using APA, Chicago, MLA, or AP style rules.
Uppercase to Lowercase
Convert ALL CAPS text to lowercase, sentence case, or title case instantly.
Case Converter
Convert text to uppercase, lowercase, title case, or sentence case.
Text Diff Checker
Compare two texts side by side and see additions, deletions, and changes.
ASCII to Text
Convert ASCII character codes to readable text.
Text to ASCII
Convert readable text to ASCII character codes.
ROI Calculator
Calculate return on investment, net profit, and annualised ROI.
Text to ASCII
Convert readable text to ASCII character codes.
ASCII to Text
Convert ASCII character codes to readable text.
Password Generator
Generate strong, random passwords with custom length and characters.
AES Encryption
Encrypt and decrypt text using AES-256 encryption.
URL Encoder / Decoder
Encode special characters for URLs or decode percent-encoded strings.
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-512 hashes from any text.
Regex Tester
Test regex patterns with real-time matching, highlighting, and capture groups.
Unix Timestamp Converter
Convert between Unix epoch time and human-readable dates.
HTML Entity Encoder
Encode special characters to HTML entities or decode them back.
CSS Minifier
Compress CSS by removing whitespace, comments, and unnecessary characters.
JavaScript Minifier
Compress JavaScript by removing whitespace and comments.
Image to Base64
Convert images to Base64 data URIs for HTML, CSS, and JavaScript.
Random Number Generator
Generate random numbers in any range — single, batch, or unique lists.
Online Timer
Countdown timer with alarm. Presets for 1, 5, 10, 15, 25, 30, 60 min. Perfect for Pomodoro.
Stopwatch & Timer
Online stopwatch with lap tracking and countdown timer.
Morse Code Translator
Translate text to Morse code or decode Morse to English. With audio playback.
Binary to Text Converter
Convert binary code to text or encode text to binary (0s and 1s).
Text Cleaner
Remove duplicate lines, line breaks, empty lines, and extra spaces from text.
Alphabetizer
Sort any list A→Z, Z→A, by length, numerically, or randomly. Remove duplicates.
ASCII Converter
Convert text to ASCII codes (decimal, hex, binary) or decode ASCII back to text.
Backwards Text Generator
Reverse any text, flip word order, or mirror each word individually.
URL Slug Generator
Convert titles to clean URL slugs. Custom separator, bulk slugify mode.
Base64 Decoder
Decode Base64 strings to text or encode text to Base64. URL-safe mode.
Robots.txt Generator
Build a robots.txt file visually. Block directories, add sitemap, download instantly.
Meta Tag Generator
Generate SEO meta tags, Open Graph, and Twitter Card tags. Live Google preview included.
Domain Age Checker
Check how old any domain is with registration date details.
Image Compressor
Compress JPEG and PNG photos to reduce file size. Quality slider, before/after comparison.
Word to PDF
Convert .docx Word documents to PDF free in your browser. No server upload.
JPG to PDF
Convert JPG images to PDF files — fast, free, and private.
YAML Formatter
Validate, format, and lint YAML. Convert YAML to JSON and JSON to YAML.
HTML Beautifier
Format and beautify HTML, CSS, and JavaScript with proper indentation.
UUID Generator
Generate random v4/v1 UUIDs and GUIDs. Bulk up to 100 at once.
JSON to CSV
Convert JSON arrays to CSV and CSV back to JSON. Download output.
JWT Decoder
Decode JWT tokens — view header, payload, claims, and expiry in browser.
Cron Generator
Build cron expressions visually. Shows plain-English description and next 5 runs.
Number Base Converter
Convert between binary, octal, decimal, and hexadecimal instantly.
Oz to Grams Converter
Convert ounces to grams and grams to oz. Essential for cooking and baking recipes.
CM to Inches
Convert centimetres to inches instantly. Includes height table and reverse converter.
KG to LBS
Convert kilograms to pounds and lbs to kg. Reference table for body weight included.
Roman Numerals
Convert numbers to Roman numerals and back. Full chart, reference table, and rules.
Unit Converter
Convert length, weight, temperature, area, volume, speed, and data units.
Temperature Converter
Convert between Celsius, Fahrenheit, and Kelvin instantly.
Showing all tools · New tools added every week based on what people actually search for.
Your Digital Toolbox — Free, Fast, and Private
ToolifyMe is a collection of free online tools built for students, developers, professionals, and anyone who needs quick answers without signing up or installing software. Every tool runs entirely in your browser — your data never leaves your device.
What Can You Do Here?
From financial planning to software development, ToolifyMe covers the tools people search for most. Use the SIP calculator to project mutual fund returns, the GST calculator to split tax amounts for invoices, or the EMI calculator to plan your next loan. Developers can format JSON, encode Base64, generate lorem ipsum text, or pick colours with HEX-to-RGB conversion. Students and writers can count words, convert text cases, or generate strong passwords for their accounts.
Why ToolifyMe?
Most tool websites are slow, cluttered with ads, and built on server-side processing that uploads your data to unknown servers. ToolifyMe is different: every calculation, conversion, and formatting operation happens right in your browser using JavaScript. Nothing is uploaded, nothing is stored, and nothing is tracked. The site loads fast on any connection because there are no heavy frameworks or server round-trips — just clean, lightweight HTML and JavaScript.
Always Growing
New tools are added regularly based on what people actually search for and need. If you have a suggestion for a tool you'd like to see, reach out through the contact page — the most-requested tools get built first.