Free online tools that run in your browser
Finance calculators, PDF and image tools, converters and generators, all processed on your device. No uploads, no accounts, no cost.
- 100% in your browser
- No sign-up needed
- Free forever
Find a tool
Search by name or filter by category, 62 tools and counting.
62 tools
Loan Calculator
Estimate monthly loan payments, total interest and payoff for any fixed-rate loan.
Open toolMortgage Calculator
Calculate monthly mortgage payments including principal, interest, taxes and insurance.
Open toolEMI Calculator
Work out your Equated Monthly Installment for any loan and see the interest breakdown.
Open toolCompound Interest Calculator
See how savings grow with compound interest and optional regular contributions.
Open toolSIP Calculator
Project the future value of a Systematic Investment Plan with regular monthly investments.
Open toolRetirement Savings Calculator
Estimate how much your retirement nest egg will grow by the time you retire.
Open toolCredit Card Payoff Calculator
Find out how long it takes to clear a credit card balance and the interest it costs.
Open toolIncome Tax Calculator
Estimate income tax and take-home pay using US, UK or Canada tax brackets.
Open toolCurrency Converter
Convert between world currencies using live exchange rates.
Open toolTip Calculator
Calculate the tip and split the total bill between any number of people.
Open toolQR Code Generator
Create a downloadable QR code from any text, URL, email or phone number.
Open toolPassword Generator
Generate strong, random passwords with custom length and character sets.
Open toolUnit Converter
Convert length, weight, temperature, volume and more between metric and imperial units.
Open toolPercentage Calculator
Calculate percentages, percentage change and what-percent-of problems.
Open toolAge Calculator
Calculate exact age in years, months and days from a birth date, plus next birthday.
Open toolMerge PDF
Combine several PDF files into one document, in the order you choose.
Open toolSplit PDF
Extract specific pages or split a PDF into separate files in your browser.
Open toolCompress PDF
Reduce PDF file size by rebuilding and optimizing the document in your browser.
Open toolPDF to Word Converter
Convert PDF text into an editable Word document, or turn a Word file into a PDF.
Open toolSign PDF
Draw or type a signature and add it to a PDF, 100% in your browser.
Open toolImage Compressor
Shrink multiple JPG, PNG and WebP images at once while keeping good quality.
Open toolImage Resizer
Resize multiple images to fit a max width and height, keeping aspect ratio.
Open toolImage Converter (JPG, PNG, WebP)
Convert multiple images between JPG, PNG and WebP at once in your browser.
Open toolImage to PDF Converter
Combine one or more images into a single PDF document.
Open toolEXIF Data Remover
Strip hidden EXIF metadata like GPS location from multiple photos at once.
Open toolBackground Remover
Automatically remove the background from an image, right in your browser.
Open toolWord & Character Counter
Count words, characters, sentences and reading time as you type.
Open toolDate Difference Calculator
Calculate the exact number of days, weeks and months between two dates.
Open toolColor Picker & Hex Converter
Pick a color and convert between HEX, RGB and HSL formats.
Open toolGPA Calculator
Calculate your grade point average from course grades and credit hours.
Open toolJSON Formatter & Validator
Format, beautify, minify and validate JSON with clear error messages.
Open toolBase64 Encoder / Decoder
Encode text to Base64 or decode Base64 back to plain text.
Open toolRegex Tester
Test regular expressions against sample text with live match highlighting.
Open toolMarkdown to HTML Converter
Convert Markdown into clean HTML with a live preview.
Open toolInvoice Generator
Create a professional invoice and download it as a PDF.
Open toolGrammar Checker
Check your writing for grammar, spelling and style mistakes.
Open toolExtract Audio from Video (MP4 to MP3)
Pull the audio track out of a video file and save it as an MP3.
Open toolVideo to GIF Converter
Turn a short video clip into an animated GIF in your browser.
Open toolAudio Trimmer
Cut and trim an audio file to a selected start and end time.
Open toolWatermark Adder
Add a text watermark to your images with adjustable position and opacity.
Open toolImage Levels Editor
Adjust brightness, contrast, saturation and gamma on your images.
Open toolNDA Generator
Create a non-disclosure agreement from a simple form and export it as a PDF.
Open toolOffer Letter Generator
Generate a professional job offer letter and export it as a PDF.
Open toolResignation Letter Generator
Write a polite, professional resignation letter you can copy or download.
Open toolRent vs. Buy Calculator
Compare the long-term cost of renting versus buying a home.
Open toolUTM Builder
Build trackable campaign URLs with UTM parameters for analytics.
Open toolHashtag Generator
Generate relevant hashtags from your keywords for social media posts.
Open toolCitation Generator (APA & MLA)
Create formatted APA and MLA citations for books, websites and articles.
Open toolProfit Margin Calculator
Calculate profit, margin and markup from cost and selling price.
Open toolCalorie & Macro Calculator
Estimate daily calories and macronutrient targets for your goals.
Open toolPaint Coverage Calculator
Estimate how much paint you need to cover your walls.
Open toolInternet Speed Test
Test your internet download, upload speed and ping right in your browser.
Open toolSocial Media Image Size Guide
Every recommended image size for Instagram, Facebook, X, LinkedIn, YouTube and more.
Open toolInstagram Image Sizes
Correct pixel sizes for Instagram posts, stories, reels and profile photos.
Open toolLinkedIn Cover Photo Size
Exact LinkedIn banner, cover, profile and post image dimensions.
Open toolFiverr Gig Image Size
Correct Fiverr gig image, gallery, video thumbnail and profile dimensions.
Open toolYouTube Thumbnail & Banner Size
Exact YouTube thumbnail, channel banner and profile image dimensions.
Open toolFacebook Cover Photo Size
Correct Facebook cover, post, profile, story and event image dimensions.
Open toolX (Twitter) Header & Image Sizes
Correct X (Twitter) header/banner, post image and profile photo dimensions.
Open toolTikTok Video & Image Sizes
Correct TikTok video, photo, ad and profile dimensions.
Open toolPinterest Pin Sizes
Correct Pinterest pin, idea pin, long pin and profile dimensions.
Open toolDiscord Banner & Icon Sizes
Correct Discord server banner, profile banner, icon and avatar dimensions.
Open toolFree online tools that respect your privacy
NiceFreeTools is a growing collection of 62 genuinely useful web utilities, finance calculators, PDF and image tools, converters, generators and design size guides. There are no accounts to create, no watermarks, and no cost. Everything is designed to do one job well and get out of your way.
What makes these tools different is where the work happens. Wherever it's technically possible, the processing runs entirely inside your own browser using modern web technology like the Canvas API, the Web Crypto API, and WebAssembly. When you compress a photo, merge a PDF, remove an image background or generate a password, your files and data never leave your device, nothing is uploaded to a server. That means real privacy, instant results, and tools that keep working even on a slow connection.
How the tools work
Each tool lives on its own page with a clear explanation of what it does, step-by-step instructions, and answers to the questions people actually ask. You don't need to sign up or install anything: open the page, use the tool, and download or copy your result. The finance calculators use standard, transparent formulas; the file tools re-encode your documents locally; and the design guides give you the exact, current dimensions for every major platform.
A handful of tools genuinely need the internet to function, the currency converter fetches live exchange rates, and the grammar checker uses an open proofreading service, and we say so clearly on those pages. Everything else is yours to use offline once the page has loaded.
Why we built NiceFreeTools
Too many “free” online tools bury a simple task under pop-ups, forced sign-ups, and file-upload steps that put your private documents on someone else's server. We wanted the opposite: fast, honest tools with real explanations, built to work on your phone, and funded by unobtrusive advertising so they can stay free for everyone. New tools and guides are added regularly.
- Runs in your browser
- No sign-up, instant results
- Free, no watermarks
Latest guides
Plain-English how-tos that pair with our tools.
iPhone 18: Release Date, Colors, Specs, and How It Compares to the iPhone 17
iPhone 18 release date, price, colors, and specs compared to the iPhone 17 — everything confirmed and rumored about Apple's split 2026-2027 lineup.
GuidesHow to Create a QR Code for Free (No App, No Sign-Up)
Create a QR code for free in seconds, no app or sign-up. Learn static vs dynamic codes, where to use them, and how to make one that scans every time.
GuidesHow to Build a UTM Link (and Actually Use the Data)
What UTM parameters are, what the five tags mean, how to build a tracking link correctly, and the naming habits that keep your analytics clean, with a free UTM builder.