Free online tools that just work
Fast, private tools for everyday tasks, creators and developers. No sign-up. No uploads. Everything runs in your browser.
🧮 Everyday & Students
Word & Character Counter
Count words, characters, sentences & reading time.
Open tool →Case Converter
UPPERCASE, lowercase, Title Case, Sentence case & more.
Open tool →Age Calculator
Your exact age in years, months, weeks and days.
Open tool →Date Difference
Days, weeks and months between any two dates.
Open tool →Discount Calculator
Final price and savings after a percentage off.
Open tool →Percentage Calculator
X% of Y, percent of, increase/decrease.
Open tool →Tip Calculator
Tip amount and split the bill between people.
Open tool →Roman Numeral Converter
Convert numbers ↔ Roman numerals.
Open tool →Unit Converter
Length, weight, temperature, speed & volume.
Open tool →GST / VAT / Tax Calculator
Add or remove tax at any rate, any currency.
Open tool →Loan / EMI Calculator
Monthly payment, total interest & cost.
Open tool →Hours Calculator
Hours & minutes between two times.
Open tool →Time Calculator
Add or subtract hours, minutes & seconds.
Open tool →GPA Calculator
Grade point average from courses & credits.
Open tool →Grade Calculator
Weighted final grade from your scores.
Open tool →German Grade Calculator
Convert GPA, %, CGPA to the German 1.0–5.0 scale.
Open tool →CGPA to Percentage Calculator
Convert CGPA to percentage (CBSE & custom).
Open tool →Percentage to CGPA Calculator
Convert a percentage back to CGPA.
Open tool →CGPA to GPA Calculator
Convert CGPA to the US 4.0 GPA scale.
Open tool →💪 Health & Fitness
BMI Calculator
Body Mass Index from height & weight.
Open tool →BMR Calculator
Calories your body burns at rest.
Open tool →Calorie Calculator
Daily calories to maintain, lose or gain.
Open tool →Ideal Weight Calculator
Healthy weight range for your height.
Open tool →Body Fat Calculator
Estimate body fat percentage (US Navy method).
Open tool →Pace Calculator
Running pace, time and distance.
Open tool →Sleep Calculator
Best bedtime & wake-up times by sleep cycle.
Open tool →Dog Age Calculator
Your dog’s age in human years.
Open tool →💰 Finance
Mortgage Calculator
Monthly home loan payment & total cost.
Open tool →Compound Interest Calculator
Grow savings with compounding over time.
Open tool →Investment Calculator
Future value with regular contributions.
Open tool →Inflation Calculator
How inflation changes money over time.
Open tool →Salary Calculator
Convert hourly, weekly, monthly & yearly pay.
Open tool →Auto Loan Calculator
Car loan monthly payment & total interest.
Open tool →Profit Margin Calculator
Margin, markup and profit from cost & price.
Open tool →ROAS Calculator
Return on ad spend and ACoS for campaigns.
Open tool →Break-even Calculator
Units & revenue needed to break even.
Open tool →Retirement Calculator
Project your retirement savings.
Soon🔢 Math
Scientific Calculator
Full calculator with trig, log, powers & more.
Open tool →Fraction Calculator
Add, subtract, multiply & divide fractions.
Open tool →Random Number Generator
Random numbers in any range.
Open tool →Standard Deviation Calculator
Mean, variance & standard deviation.
Open tool →Triangle Calculator
Area, perimeter & angles from 3 sides.
Open tool →Average Calculator
Mean, median, mode & range.
Open tool →📄 PDF Tools
🎨 Creators
Fancy Text Generator
Turn text into stylish fonts for bios & posts.
Open tool →Hashtag Generator
Relevant hashtags for any topic or niche.
Open tool →Emoji & Symbol Picker
Copy-paste emojis and aesthetic symbols.
Open tool →Text Repeater
Repeat any text or emoji many times.
Open tool →Love Calculator
Just-for-fun love compatibility score.
Open tool →💻 Developers
JSON Formatter
Format, validate and minify JSON instantly.
Open tool →Color Converter
Convert between HEX, RGB and HSL colors.
Open tool →Number Base Converter
Binary, octal, decimal & hex conversions.
Open tool →Unix Timestamp Converter
Epoch ↔ human date, local and UTC.
Open tool →Base64 Encode / Decode
Convert text to and from Base64.
Open tool →QR Code Generator
Make QR codes for links, text and Wi-Fi.
Open tool →Password Generator
Create strong, random, secure passwords.
Open tool →No tools match your search yet — more are on the way!
Why use ToolNestr?
ToolNestr brings together 59+ free online tools in one fast, clean place. Whether you’re a student, a creator or a developer, you’ll find calculators, converters, text helpers, PDF tools, image utilities and more — all built to do one job well.
Instant & free
Every tool is free, with no sign-up and no limits. Results appear instantly as you type.
Private by design
Most tools run entirely in your browser, so your files and text never leave your device.
Works everywhere
A mobile-first design that works smoothly on phones, tablets and computers alike.
All in one place
No more bookmarking ten different sites — your everyday tools live together here.
Frequently asked questions
Are these tools really free?
Yes. Every tool on ToolNestr is completely free to use, with no sign-up, no account and no limits.
Do I need to install anything?
No. All tools run right in your web browser on any device — phone, tablet or computer. There is nothing to download.
Are my files and text private?
Yes. Most tools (like the PDF, image, password and text tools) process everything directly in your browser, so your data never gets uploaded to a server.
Do the tools work on mobile?
Absolutely. The whole site is mobile-first and designed to work smoothly on phones and tablets as well as desktops.