46 tools · no sign-up · nothing to install
Tools that run inside your browser
Speed tests, JSON, network checks, calculators. Most of them finish on your own machine, which is why they are free and why there is nothing to sign up for. The few that genuinely need a server say so on their own page.
Dynamic QR Code Generator
Create editable QR codes and change the destination anytime without reprinting. Track scans. Free, no sign-up.
QR Code Generator
Generate QR codes for URLs or text instantly. Free, no sign-up, runs in your browser.
3D QR Code Art Generator
Turn any link into an animated 3D scene, a tree, a city skyline, or a circuit board, built from your real QR data. Free, no sign-up.
WiFi QR Code Generator
Make a QR code guests scan to join your WiFi in one tap. WPA/WEP/open. Free, no sign-up.
vCard QR Code Generator
Turn your contact details into a QR code people scan to save you instantly. Free, no sign-up.
Spin the Wheel
Random name picker wheel. Type entries, spin, and remove the winner. Fair, secure draw in your browser. Free, no sign-up.
IP Address Lookup
Check your public IP address instantly. See your location (city, region, country), ISP, and timezone.
Internet Speed Test
Test your internet speed, download and upload in Mbps and MB/s, plus ping and jitter. Free, runs in your browser.
Website Change Monitor
See the exact text a change monitor would watch on any page, and whether it renders with JavaScript. Free, no sign-up.
Network Monitor
Watch your internet connection in the browser, no terminal needed. Detects drops in real time and logs uptime, latency, and how long each outage lasted.
Calorie Calculator
Calculate your TDEE and daily calorie needs. Get personalized targets for weight loss, maintenance, or gain. Uses Mifflin-St Jeor and Harris-Benedict formulas.
Password Generator
Generate cryptographically secure random passwords. Customize length, character types, and exclusions. Uses Web Crypto API.
Paycheck Calculator
Calculate take-home pay after federal and state taxes, Social Security, Medicare, and pre-tax deductions. Supports hourly and salary with 2026 tax brackets.
Compound Interest Calculator
Calculate compound interest growth with optional monthly contributions. Choose compounding frequency from daily to annually.
Pregnancy Calculator
Calculate due date from last period or conception date. Track fetal development week by week with milestones.
Macro Calculator
Calculate daily macros (protein, carbs, fat) based on TDEE and fitness goal. Supports cutting, bulking, maintenance with keto and low-carb presets.
BMI Calculator
Calculate BMI in metric or imperial units. Get ideal weight range and health risk assessment based on BMI categories.
Weighted Grade Calculator
Combine assignments by their assessment weight to get your class average, or work backwards to the final exam score you need. Editable grade scale.
GPA Calculator
Calculate GPA on 4.0, 5.0, or percentage scale. Add multiple courses with credit hours. Instant GPA calculation.
Color Hex Generator
Generate random hex colors with RGB and HSL conversions. Create color palettes for design projects.
Dividend Calculator
Calculate dividend income, yield, and total return. Track quarterly and annual dividend payments.
Loan Calculator
Calculate monthly payments for personal, auto, and student loans. View amortization schedule and see how extra payments save interest.
Mortgage Calculator
Calculate monthly mortgage payment, total interest, and full amortization schedule. Enter loan amount, rate, and term.
Currency Converter
Convert between 50+ currencies with live exchange rates. USD to EUR, GBP to USD, and more. Free, no sign-up, instant results.
Unit Converter
Convert length, weight, volume, speed, and area units instantly. Miles to km, kg to lbs, liters to gallons, and more.
Tip Calculator
Calculate tip amount, total bill, and per-person share. Tip presets (10–25%), custom percentage, split between any number of people, and round-up-to-dollar toggle.
Ovulation Calculator
Calculate ovulation date and fertile window from last period. Track best days to conceive for pregnancy.
Retirement Calculator
Plan your financial future. Calculate retirement savings growth and monthly withdrawal amounts using the 4% rule.
Percentage Calculator
Calculate percentages instantly, percent of a number, percentage change, discounts, and more.
Image Resizer
Resize and compress images online, free, instant, and private. Runs entirely in your browser, nothing uploaded.
Temperature Converter
Convert between Fahrenheit, Celsius, and Kelvin instantly. Type any value, all units update live.
Age Calculator
Calculate your exact age in years, months, and days, plus total days lived and next birthday countdown.
Word Counter
Count words, characters, sentences, paragraphs, and reading time instantly. Free, no sign-up, runs in your browser.
Pomodoro Timer
Free online Pomodoro timer with customizable work/break intervals. Visual circular countdown, sound alerts, and browser notifications. Stay focused and productive.
Random Number Generator
Generate random numbers, roll dice (D4/D6/D8/D10/D12/D20/D100), flip coins, and shuffle lists. Free online tools for games and raffles.
Gold Price Chart
Live XAU/USD gold price with interactive candlestick chart. Track gold price history from 1 week to 5 years.
Click Speed Test
Test your clicking speed in CPS. Try CPS test, spacebar clicker, and double-click test.
JSON Formatter
Format, minify, and validate JSON instantly in your browser. No sign-up, no data sent to servers.
Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 back to text instantly. UTF-8 safe, URL-safe option, fully client-side.
Oil Price Chart
Live WTI crude oil price chart (CL=F). Track oil price history from 1 week to 5 years with open/high/low/close data.
Timezone Converter
See current time in any two time zones and find the difference. Perfect for scheduling international meetings.
Text Diff Checker
Compare two texts side by side and highlight added, removed, and unchanged lines. Works with code, JSON, and prose.
Text Joiner
Join lines into SQL IN clauses, CSV, quoted strings, or any custom delimited format. Paste, configure, copy.
Double Click Test
Is your gaming mouse double clicking? Test for Omron switch failure, common in Logitech G102, G502, Razer DeathAdder.
Work that keeps going when you do not.
Everything above finishes before you look away. Some things cannot: they have to watch, poll and remember while your laptop is shut. That needs a server, an account, and a bill we are upfront about.
Change where a printed code points, without reprinting it. Scans are counted, and the destination is yours to edit for as long as the code is out in the world.
Free tier, then priced on its own pageThey finish while you are still on the page, so they cost nothing per use and there is nothing to charge for. No trial, no seat count, no tool that stops working after the tenth time.
No account, now or laterHow to pick the right tool.
Most people arrive with a specific job in mind: work out a loan repayment, turn a link into a QR code, check an internet connection, or clean up a messy block of text. The fastest route is the search box above the grid. Type what you are trying to do ("mortgage", "wifi qr", "json") and the list narrows as you type. If you are browsing rather than hunting, the category filters group the tools the way you would expect.
A rule of thumb for the four big groups. Calculators answer a number question: how much, how long, how many. Converters change one format or unit into another. Generators produce something you take away, a QR code, a password, a colour. Tests measure something happening live in your browser, like click speed or connection quality. The finance and health calculators print the formula and the source they use, so you can check the working rather than trust the box.
Or start from the shape of the job.
QR Code Tools
Free QR code tools: a dynamic generator with editable destinations and unlimited scans, a static generator, Wi-Fi and vCard codes, and a 3D QR art generator. No sign-up.
Calculators
Free online calculators for finance, health, education, and everyday math. No sign-up required, instant results in your browser.
Converters
Convert units, currencies, temperatures, timezones, and images instantly with live, accurate results. Free, no sign-up, works right in your browser.
Generators
Generate passwords, QR codes, hex colors, and random numbers. Free browser-based tools using the Web Crypto API, no sign-up required.
Finance Tools
Calculate loan payments, compound interest, dividends, mortgage, paycheck, and retirement savings. Free financial planning tools.
Health & Fitness
Calculate calories, macros, BMI, pregnancy due dates, and ovulation with free health and fitness calculators built on medical-standard formulas.
Developer Tools
Format JSON, check diffs, generate hashes, create QR codes, and more. Free browser-based developer tools, no install needed.
Speed Tests
Test your clicking speed (CPS), spacebar speed, double-click issues, internet speed, and connection stability. Free online tests, no sign-up.
Price Charts
Live gold and oil price charts (XAU/USD and WTI crude) with interactive candlestick history from one week to five years, updated every 15 minutes.
Text Tools
Count words, compare text diffs, format and validate JSON, encode Base64, and join lines into CSV or SQL. Free tools that run entirely in your browser.
Security Tools
Generate cryptographically secure passwords with the Web Crypto API and calculate MD5, SHA-1, SHA-256, or SHA-512 hashes for text and files in your browser.
Education Tools
Calculate weighted grade averages, GPA across a semester, and the minimum score needed on a final exam to hit a target grade. Free, no sign-up required.
Productivity Tools
Free Pomodoro timer with sound alerts and browser notifications, plus a random number generator for raffles, dice rolls, and unbiased picks from any list.
Design Tools
Pick exact hex, RGB, and HSL color values, then resize or compress an image, all directly in your browser. No account, no uploads to a server.
Network Tools
Check your public IP address, ISP, and location, test your real internet speed, and monitor connection uptime and latency. Free network diagnostic tools.
The writing behind the tools.
Why a mouse starts double-clicking on its own, what jitter actually measures, what a QR code can and cannot carry. Long, specific, and cited by AI assistants more often than the tools they explain.
All explainers →Frequently Asked Questions
What free tools are available on Toolember?▾
Do any of these tools require a sign-up or account?▾
Is my data sent to a server when I use these tools?▾
Why are some tools paid when the rest are free?▾
Do these tools work on mobile?▾
How often is the gold and oil price data updated?▾
How do I find a specific tool?▾
Searched for something and found nothing?
Tell me what you needed. Most of what gets built next comes from these notes rather than from a roadmap. Leave an email and you get exactly one message, the day it goes live.