Free online calculators & everyday tools. 40+ tools, one place.
GPA, BMI, age, calorie and loan calculators, Pomodoro timer, PDF merger, image compressor, QR code and password generators, and more. All free.
Free forever · No account required · Works on any device
How to get started
- Search tools with the bar above or ⌘K
- Browse by category below
- Pin favorites from any tool card
Popular tools
Citation Generator
AAA, NLM, APA, MLA, and Chicago citations for books, journals, and websites.
BMI Calculator
Body Mass Index and health category.
GPA Calculator
Calculate your GPA from grades.
Age Calculator
Calculate your exact age in years, months, and days.
Loan Calculator
Estimate monthly payments and total interest.
PDF Merge/Split
Merge or split PDF files.
Image Compressor
Compress images without losing quality.
Pomodoro Timer
25-minute focus sessions.
QR Generator
Create QR codes for URLs and text.
How LifeHub helps you
Pick a starter pack based on your goal and jump straight into the right set of tools.
Study Essentials
Plan exams, track grades, and stay on top of studying.
Includes 5 tools · Free to use
New Job Toolkit
Prepare your resume, plan applications, and understand your salary.
Includes 5 tools · Free to use
Daily Routine
Build better habits and structure your day with intention.
Includes 6 tools · Free to use
Money & Freelance
Estimate projects, generate invoices, and explore financial options.
Includes 4 tools · Free to use
Study, grades, and academic helpers
GPA Calculator
Calculate your GPA from grades.
Study Timer
Focused study sessions with breaks.
Flashcards
Create and study flashcards.
AI Notes Summarizer
Summarize notes with AI.
Exam Countdown
Count down to your exams.
Resume Builder
Build a professional resume.
Word Counter
Count words, characters, and sentences in text.
Citation Generator
AAA, NLM, APA, MLA, and Chicago citations for books, journals, and websites.
Health, wellness, and everyday utilities
Age Calculator
Calculate your exact age in years, months, and days.
BMI Calculator
Body Mass Index and health category.
Water Intake Calculator
Daily water intake based on weight and activity.
Sleep Calculator
Optimal wake times based on sleep cycles.
Calorie Calculator
Daily calorie needs for your goals.
Habit Tracker
Track daily habits and build streaks.
Goal Tracker
Set and track your goals.
Tip Calculator
Calculate tip and split the bill easily.
Loan Calculator
Estimate monthly payments and total interest.
Meditation Timer
Guided breathing and meditation sessions.
Business and work utilities
Invoice Generator
Create professional invoices.
Meeting Timezone Converter
Convert meeting times across timezones.
Salary & Tax Calculator
Estimate take-home pay.
Project Cost Estimator
Estimate project costs.
Contract Templates
Professional contract templates.
Expense Tracker
Track daily expenses by category.
Focus, tasks, and planning
Files, generators, and utilities
PDF Merge/Split
Merge or split PDF files.
Image Compressor
Compress images without losing quality.
File Converter
Convert between file formats.
QR Generator
Create QR codes for URLs and text.
Password Generator
Generate secure passwords.
Unit Converter
Convert length, weight, temperature, and more.
Color Converter
Convert between hex, RGB, and HSL.
Base64 Encode/Decode
Encode or decode Base64 text.
Lorem Ipsum Generator
Generate placeholder text for designs.