All Tools — One Page (30+)

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Calculators

🧮 Basic Calculator
Four functions, percent, memory
 🧪 Scientific Calculator
Functions, DEG/RAD, history
 🏠 Mortgage Calculator
Payment & amortization
 🍽️ Tip & Split Bill
Per-person share
 🧮 Age Calculator
Exact age in years, months, days
 ⚖️ BMI Calculator
Body Mass Index
 ➗ Percentage Calculator
Percent of / change
 📅 Date Difference
Days between dates

Converters

🔁 Unit Converter
18 categories · 300+ units
 💱 Currency Converter
Live FX + manual rate

Time

🌍🕒 World Time (by Country)
See local time across countries
 🕰️ Unix Timestamp Converter
Epoch ↔ Local/UTC
 ⏳ Countdown Timer
Simple countdown
 ⏱️ Stopwatch
Online stopwatch
 📅# Week Number Finder
ISO week from date

Calendars

🖨️📅 Printable Calendar
PDF-ready monthly pages

Utilities

🔐 Password Generator
Strong random passwords
 🌐 IP Address Lookup
Your public IP
 🎲 Random Number Generator
Secure RNG when available
 🔳 QR Code Generator
Create QR codes
 🎨 Color Picker
Pick & copy hex
 📷 QR Code Scanner
Camera or image
 🎨 Palette from Image
Extract colors
 🎟️ Lottery Number Generator
For entertainment only

Writing

📝 Word Counter
Words & chars
 🔡 Character Counter
Counts all chars
 🔠 Text Case Converter
UPPER / lower / Title

FAQ

Are these tools free to use?

Yes. GoToolOnline tools are free to use with no sign-up required.

Do they work offline?

Most tools run locally in your browser. The currency converter supports manual rates for offline use, and can fetch live rates when online.

How is my privacy protected?

Most tools process your input only in the browser and do not upload data to servers. See our Privacy Policy for details.

Can I bookmark tools I use often?

Absolutely. Bookmark any tool page to open it instantly next time.