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    Calculators

    Age Calculator

    Instantly find your exact age in years, months, and days!

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    Date Calculator

    Calculate days, weeks, or months between any two dates instantly.

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    Unit Converter

    Convert any unit instantly — simple, fast, and accurate

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    GPA Calculator

    Calculate Your GPA Instantly and Accurately

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    Personal Finance & Wealth Building

    Credit Card Debt Payoff Calculator

    Calculate how fast you can become debt-free and save on interest

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    Rent vs Buy Calculator

    Make the smarter move—compare renting vs. buying instantly

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    Investment Growth Calculator

    Watch your money grow over time with smart investing!

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    Wedding & Events

    Wedding Budget and Guest list manager

    Manage your wedding budget and guest list effortlessly in one place

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    Event Timeline Calculator

    Plan and schedule event tasks with accurate timelines

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    Honeymoon Budget Calculator

    Budget smartly and enjoy a stress-free romantic getaway

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    Health & Wellness

    Pregnancy Calculator

    Track your pregnancy milestones and expected due date easily

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    Workout Planner

    Plan, track, and crush your fitness goals effortlessly!

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    Calorie Calculator

    Calculate your daily calorie needs based on your goals

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    BMI Calculator

    Check your Body Mass Index to know if you're in a healthy range

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    Family & Life Planning

    Family budget palnner

    Plan and track your family's monthly income and expenses easily

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    College Savings Calculator

    Estimate how much you need to save for future college expenses

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    Sustainability & Eco-Friendly

    Solar Panel ROI with Battery Storage Calculator

    Calculate your return on investment for solar panels and battery storage systems

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    Energy Savings Calculator

    Calculate how much energy and money you save over time.

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    Recycling Calculator

    Measure your environmental impact by calculating recycled waste saving

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    Carbon Footprint Calculator

    Estimate your carbon emissions and discover ways to reduce them

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    Transportation & Vehicles

    Vehicle Maintenance Calculator

    Track and manage your vehicle maintenance costs easily

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    Trip Planner

    Plan your trips efficiently and make the most of your travel

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    Electric vs. Gas Vehicle TCO Calculator

    Compare the total cost of ownership between electric and gas vehicles over time

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    Fuel Cost Calculator

    Calculate fuel costs quickly for any trip or vehicle

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    Scale modelling

    Scale Converter

    Convert between different model scales

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    Material Calculator

    Estimate the materials needed for any project quickly and accurately

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    resin-casting-calculator

    Mix the perfect amount of resin every time — no more waste!

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    Everyday Life

    Meal Prep Cost & Time Savings Calculator

    Discover how much time and money you can save by meal prepping vs. eating out

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    Digital Subscriptions Manager

    Track and manage all your digital subscriptions easily—no sign-ups needed

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    Advanced Paint Calculator for Rooms

    Estimate the paint needed for any room accurately and easily

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    Smart Tip & Bill Splitter Calculator

    Easily divide bills and tips in seconds — no math needed!

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    Education & Learning

    Study Session & Break Planner (Pomodoro Timer)

    Boost productivity with timed focus and break sessions

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    Business & Marketing

    Profit Margin & Markup Calculator

    Calculate profit margin and markup instantly for smarter pricing.

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    Social Media Image & Video Resize Tool

    Upload your image or video and instantly resize it for any social media platform. Download perfectly optimized content.

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    ROI (Return on Investment) Calculator

    Quickly calculate your investment returns in percentage

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    International Time Zone Meeting Planner

    Track, manage, and optimize all your subscriptions in one place

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    Time & Productivity

    Priority Matrix

    Sort tasks by urgency and importance to focus on what truly matters first

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    Time Blocking Planner

    Visual time blocking system to schedule your day in focused chunks and eliminate multitasking

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    Relationships & Social

    Communication Style Analyzer

    Discover your communication style and learn how to better connect with different personality types

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    Home & Garden

    Home Maintenance Scheduler

    Never miss important home maintenance tasks with seasonal reminders and customized checklists

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    Fun & Generators

    Random Idea & Creativity Generator

    Spark creativity with random prompts for stories, art projects, business ideas, and creative challenges

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    At UsefulTools.shop, explore a growing collection of free online calculators designed to make everyday life simpler. From finance calculators and health tools to unit converters and personal planning calculators, every tool helps you make quick, accurate decisions.

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