36+ free tools
Free online tools, instantly.
Calculators, converters & generators, no sign-up, nothing leaves your device. 36+ tools that open and work immediately on desktop and mobile.
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.
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.
Grade Calculator
Calculate weighted grade average from assignments. Find out what score you need on your final exam. Customizable grading 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.
QR Code Generator
Generate QR codes for URLs or text instantly. Free, no sign-up, runs in your browser.
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.
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.
Browse by Category
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. Free, no sign-up, works in your browser.
Generators
Generate passwords, QR codes, colors, hashes, and random numbers. Free tools that run entirely in your browser.
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. Free health tools using 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, and detect double-click issues in gaming mice. Free online tests.
Price Charts
Live gold, silver, platinum, oil, and natural gas price charts with interactive candlestick visualization. Updated every 15 minutes.
Text Tools
Count words, compare diffs, format JSON, and join text lines. Free text processing tools that run in your browser.
Security Tools
Generate secure passwords and cryptographic hashes (MD5, SHA-1, SHA-256, SHA-512). Free browser-based security tools.
Education Tools
Calculate GPA, weighted grades, and final exam scores. Free academic calculators for students.
Productivity Tools
Pomodoro timer, random number generator, and more. Free tools to boost your productivity.
Design Tools
Generate hex colors, resize images, and create visual content. Free browser-based design tools.
Network Tools
Check your public IP address, ISP, location, and detect proxy/VPN connections. Free network diagnostic tools.
Why Use Toolember?
No Sign-up
Every tool opens and works instantly. No account, no email, no cookie consent wall beyond what the browser requires.
Privacy First
Calculator and testing tools run entirely in your browser. No input data is transmitted, stored, or logged on any server.
Mobile Ready
Responsive layouts optimized for phone and tablet. The click test works with touch events; charts are swipe-friendly.
Guides
All guides →Plain-language explainers for the money, health, and tech ideas behind the tools.
APR vs Interest Rate: What Is the Difference?
Interest rate and APR are not the same number. Here is what each one measures, why APR is usually higher, and how to use both when comparing loans.
How to Calculate Your Macros for Any Goal
A practical walkthrough: work out your calories first, set protein by body weight, then split the rest between fat and carbs for fat loss, maintenance, or muscle gain.
How to Read an Internet Speed Test: Mbps, MB/s, Ping, and Jitter
What download and upload speed actually mean, why Mbps is not MB/s, what ping and jitter tell you, and how much speed you really need.