Small tools. Serious utility.
Every tool on MiniTools does one thing well, runs in your browser, and never sends your data to a server. Free forever. No signups.
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107 tools
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Most popular
Featured tools
The most-requested tools, picked from real complaints we found online.
Rent Affordability Calculator
Find out how much rent you can afford based on your income.
Appliance Energy Cost Calculator
Calculate how much an appliance costs you per month and per year.
Daily Distraction Cost Calculator
See how much time and money distractions cost you every year.
Brand Name Generator
Generate short, brandable business names from one or two keywords.
Compound Interest Calculator
Visualize how your investments grow over time with compound interest.
Case Converter
Convert text between UPPER, lower, Title, camelCase, snake_case and more.
Word / Character Counter
Count words, characters, sentences, and reading time.
JSON Formatter & Validator
Format, validate, and minify JSON with line numbers and error hints.
Password Generator
Generate strong, customizable passwords in your browser.
Color Palette Generator
Generate harmonious color palettes with one click.
Meeting Cost Calculator
See how much every minute of a meeting actually costs.
Debt Payoff Calculator (Snowball vs Avalanche)
Compare the debt snowball and avalanche strategies and see which saves you more.
Password Strength Checker
See how long it would actually take to crack a password, in your browser.
Image Format Converter
Convert PNG, JPG, and WebP images locally.
Image Resizer
Resize an image to exact dimensions while preserving its ratio.
PDF Merger
Combine multiple PDFs into one file in your browser.
Images to PDF
Combine JPG, PNG, and WebP images into a PDF.
SERP Snippet Preview
Preview a Google-style result and catch title or description truncation.
Schema Markup Generator
Generate JSON-LD for articles, products, organizations, events, and local businesses.
Voltage Drop Calculator
Compute the percentage drop across a feeder or branch circuit quickly.
Manual J Lite Load Calculator
Estimate room-by-room heating and cooling loads.
Euler Column Buckling Load
Compute critical buckling load for a fixed/pinned steel or wood column.
Arc Flash Boundary (IEEE 1584)
Compute incident energy and arc flash boundary distance.
TDEE & Macro Calculator
Calculate how many calories you burn per day and how to split them into protein, carbs, and fat.
All tools
623 free browser tools, organized by category.
Rent Affordability Calculator
Find out how much rent you can afford based on your income.
HVAC Maintenance Schedule Generator
Generate a printable HVAC maintenance schedule for any property.
Affiliate Link Checker
Paste a list of affiliate links and check which are broken.
Sponsorship Deal Tracker
Track sponsorship deals, deadlines, deliverables, and payment status.
PDF Page Counter
Drop in a PDF and instantly see page count, file size, and stats.
Fake Pay Stub Checker
Spot the red flags of a fake pay stub before renting or lending.
Shopify Shipping Simulator
Estimate shipping cost and margin on a Shopify order.
Appliance Energy Cost Calculator
Calculate how much an appliance costs you per month and per year.
Daily Distraction Cost Calculator
See how much time and money distractions cost you every year.
Brand Name Generator
Generate short, brandable business names from one or two keywords.
Tip Calculator
Split the bill fairly and pick the right tip percentage.
Compound Interest Calculator
Visualize how your investments grow over time with compound interest.
Mortgage Payment Calculator
Estimate your monthly mortgage payment including taxes and insurance.
Salary ↔ Hourly Converter
Convert a yearly salary to an hourly rate (or the reverse).
Savings Goal Calculator
Find out how much to save each month to hit any goal.
Discount / Sale Price Calculator
Calculate the final price, savings, and effective percentage off.
Case Converter
Convert text between UPPER, lower, Title, camelCase, snake_case and more.
Word / Character Counter
Count words, characters, sentences, and reading time.
Runs in your browser
Every tool is client-side JavaScript. Your inputs never leave your machine.
No signups. No popups.
Open the tool, do the thing, leave. The way the web used to feel.
Built from real complaints
We scan Reddit, forums, and reviews to find tools people actually wish existed.