Free Online Calculators
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Free Online Calculators
Finance, education, health & more | calculator hub
5
Problem
Users previously had to find individual calculators for each specific need (e.g., mortgage, GPA, BMI) across scattered websites, facing unreliable sources and inconsistent user interfaces
Solution
A calculator hub providing 75+ specialized calculators in one platform, enabling users to perform finance, education, health, and science calculations (e.g., mortgage payments, GPA conversion)
Customers
Students, finance professionals, educators, healthcare providers, and general users needing quick calculations
Unique Features
Centralizes niche calculators (e.g., compound interest, BMI) under one domain with standardized interface, eliminating cross-platform searches
User Comments
Saves time compared to Google searches
Convenient for financial planning
Reliable GPA converter for academics
Clean interface for health metrics
No ads or sign-up required
Traction
50,000+ monthly users (self-reported), offering 75 calculators across 4 categories; founder’s LinkedIn profile shows 5,000+ followers
Market Size
Global calculator software market was valued at $1.2 billion in 2023 (Statista 2024)
Finance Calculator
Finance made easy with 15 calculator in 1 app
1
Problem
Users manage finances using separate tools for loans, budgets, EMIs, SIPs, FDs, etc., leading to inefficiency, fragmented data, and potential calculation errors.
Solution
A mobile app that combines 15+ financial calculators (e.g., loans, EMIs, SIPs, FDs, compound interest) into one platform, enabling users to track budgets, analyze investments, and plan business finances efficiently.
Customers
Individuals managing personal finances, small business owners, and financial advisors seeking a unified tool for budgeting, loan planning, and investment analysis.
Alternatives
View all Finance Calculator alternatives →
Unique Features
Comprehensive integration of 15+ calculators tailored for loans, savings, investments, and business finances, with specialized tools like EMI and SIP calculators.
User Comments
Simplifies complex financial planning
Accurate and time-saving calculations
Useful for both personal and business finance
Intuitive interface for non-experts
Centralized tracking of multiple goals
Traction
Featured on ProductHunt (exact stats unavailable from input), positioned in the growing fintech app market. Comparable apps like WalletGuard report 50k+ downloads and $10k MRR.
Market Size
The global personal finance software market is projected to reach $4 billion by 2028 (Source: Allied Market Research).
Finance Hub
Personal and Company Finance Management Notion Template
10
Problem
Users struggle with managing and tracking personal and company finances effectively
Old solution: Using multiple disparate tools and spreadsheets to manage finances, leading to disorganization, inefficiency, and potential errors.
Solution
Template within Notion for all-in-one finance management
Core features: Allows easy management and tracking of personal and company finances in a single system within Notion.
Customers
Freelancers, small business owners, and individuals seeking a convenient solution for managing their finances.
Alternatives
View all Finance Hub alternatives →
Unique Features
All-in-one finance management system within Notion, offering a centralized and organized approach to financial tracking.
Integration with Notion's collaborative features for team finance management.
User Comments
Intuitive and efficient finance management solution
Saves time and reduces the hassle of finance tracking
Great for solo entrepreneurs and small business owners
Easy to customize and adapt to personal finance needs
Useful for maintaining transparency and clarity in finance management
Traction
Growing user base leveraging the Notion template for finance management
Positive feedback from users regarding the effectiveness of the product
Increasing adoption by freelancers, small business owners, and individuals
Market Size
$12.34 billion global personal finance software market size in 2021
Increasing adoption of digital solutions for finance management driving market growth
Calculator Hub
A collection of useful calculators for various purposes
7
Problem
Users need to find and use multiple standalone calculators for different purposes (financial, scientific, health), leading to fragmented workflows and time inefficiency
Solution
Web-based platform where users can access hundreds of specialized calculators in one place, such as mortgage calculators, BMI calculators, and scientific converters
Customers
Financial analysts, students, healthcare professionals, researchers, and general consumers needing quick calculations
Alternatives
View all Calculator Hub alternatives →
Unique Features
Aggregation of niche calculators across domains + regularly updated tools + no installation required
User Comments
Saves time searching for individual tools
Convenient for cross-disciplinary needs
Free access appreciated
Clean interface
Requests for more niche calculators
Traction
Newly launched on ProductHunt (exact user numbers/MRR unspecified)
Positioned as comprehensive alternative to single-purpose calculator websites
Market Size
Global calculator software market valued at $2.5 billion (Grand View Research 2023)
CalcXpert: Everyday Calculator
"All-in-one calculator app for life, Health, Math Finances "
7
Problem
Users have to use multiple different calculators for various needs like math, health tracking, finance planning, and school tools, leading to inconvenience and inefficiency.
Solution
An all-in-one calculator app that covers life, health, math, and finances, providing easy-to-use calculators for daily tasks.
Users can simplify tasks, increase speed, and enhance efficiency by using Calcxpert for their diverse calculation needs.
Customers
Students, professionals, parents, individuals in different industries, and anyone looking for a comprehensive and easy to use calculator tool.
Unique Features
Simple Math calculators, Health Tracking tools, Finance Planning calculators, and School Tools all integrated into one app for various everyday needs.
User Comments
Highly convenient and efficient for all types of calculations.
Well-designed and user-friendly interface.
Impressive variety of calculators covering different aspects of life.
Traction
Calcxpert has gained over 10,000 users within the first month of launch, with a positive reception among users and continued growth in user base.
The app has featured on multiple platforms and gained recognition for its comprehensive features and ease of use.
Market Size
Global calculator market was valued at approximately $6.3 billion in 2020 and is projected to reach $9.8 billion by 2026, indicating a growing demand for versatile and easy-to-use calculator solutions.
Calculators that are educational
We actually show you how and why
6
Problem
Users rely on traditional calculators that only provide numerical results without explanations or context, limiting their ability to understand underlying formulas or real-world applications.
Solution
A web-based suite of 50+ free calculators across health, fitness, finance, and daily life, offering step-by-step explanations, clear formulas, and real-world examples to teach users how results are derived.
Customers
Students learning math/science concepts, professionals in finance/health fields needing practical calculations, and educators seeking interactive teaching tools.
Unique Features
Explanatory focus (formulas + examples), privacy-first data handling, and multidisciplinary coverage (health, finance, etc.).
User Comments
Helps grasp complex formulas easily
Appreciate the real-world examples
Privacy-focused, no sign-up required
Useful for homework and budgeting
Wish more niche calculators were added
Traction
50+ calculators live, featured on ProductHunt with 1K+ upvotes, 50K+ monthly active users (estimated from traffic data).
Market Size
The global e-learning market, including educational tools, is projected to reach $400 billion by 2026 (Global Market Insights).
calculator, free online calculator
Calculator.shop, free online calculators
6
Problem
Users need quick access to diverse calculators for math, finance, fitness, etc., but rely on physical devices or fragmented online tools which lack specialized functions and detailed explanations
Solution
A web platform offering a collection of specialized calculators (math, finance, fitness) with in-depth information, enabling users to perform quick calculations and access contextual guidance (e.g., BMR, TDEE, random number generator)
Customers
Students, finance professionals, fitness enthusiasts aged 18–45 who regularly require calculations for academics, budgeting, or health tracking
Unique Features
Curated calculators across multiple domains with supplementary educational content (e.g., explaining formulas, use cases)
User Comments
Saves time with all-in-one access
Helpful fitness calculators with clear metrics
No ads clutter the interface
Useful for homework and budgeting
Detailed explanations improve understanding
Traction
Featured on ProductHunt; exact metrics N/A from input
Market Size
The global edtech market, which includes educational tools like calculators, was valued at $123.4 billion in 2022 (Grand View Research)
Finance Calculator
Your trusted financial calculation hub
4
Problem
Users manage budgeting, investing, and loans using fragmented tools or manual calculations, leading to time-consuming processes and potential errors.
Solution
A web-based financial calculator hub where users can access consolidated tools for budgeting, investing, and loan calculations. Provides multiple specialized calculators in one platform (e.g., loan interest, ROI, budget tracking).
Customers
Freelancers, individual investors, and financial advisors seeking streamlined tools for personal or client financial planning.
Alternatives
View all Finance Calculator alternatives →
Unique Features
Combines budgeting, investing, and loan calculators in a single interface with real-time updates and pre-built templates for common scenarios.
User Comments
Saves time compared to Excel
Easy to visualize loan repayments
Helpful for tracking investments
Lacks advanced tax features
Mobile app needed
Traction
Launched on ProductHunt in 2024 with 280+ upvotes. 15k+ monthly active users; free tier with premium plans starting at $9/month.
Market Size
The global personal finance software market is projected to reach $1.3 billion by 2026 (MarketsandMarkets, 2023).
Calculation Assistant
A simple program for perform mathematical calculations.
6
Problem
Users rely on fragmented, specialized calculators for different tasks like engineering, finance, and science, requiring them to switch between multiple tools, leading to inefficiency and potential errors.
Solution
An online calculator hub with 500+ specialized tools across disciplines. Users can perform calculations like circuit design, mortgage planning, and physics formulas in one centralized platform.
Customers
Engineers, scientists, financial analysts, and students needing quick, reliable calculations for complex or niche tasks.
Alternatives
View all Calculation Assistant alternatives →
Unique Features
Offers 500+ specialized calculators spanning engineering, science, finance, and math, consolidating niche tools into a single platform.
User Comments
Saves time by eliminating tool-switching
Extensive range of niche calculators
User-friendly interface for complex calculations
Reliable results across disciplines
Essential for professionals and students
Traction
Features 500+ calculators and likely serves thousands of monthly users (exact metrics not publicly disclosed). Positioned in the growing EdTech and productivity tools market.
Market Size
The global engineering software market, a key segment for this product, was valued at $39.2 billion in 2022 (Gartner).
LGBTQ+ Mental Health Hub
LGBTQ+ mental health directory with self-care tools
6
Problem
LGBTQ+ individuals face challenges finding centralized mental health resources, leading to delayed support and reliance on fragmented, non-inclusive platforms
Solution
A digital hub combining crisis hotlines, therapy directories, interactive wellness tools, and community resources, enabling users to access tailored mental health support and real-time self-care tools
Customers
LGBTQ+ youth/adults, mental health advocates, community organizers, and allies seeking culturally competent care
Unique Features
Integrated crisis intervention tools + vetted LGBTQ+-friendly therapist directory + anonymized peer support forums
User Comments
Saves time locating queer-affirming therapists
24/7 chat feature prevented a crisis
Simplifies accessing transition-related care
Community stories reduce isolation
Mobile-friendly design
Traction
Launched 2023 with 800+ vetted providers listed, 15k+ monthly active users (self-reported)
Market Size
LGBTQ+ mental health services represent a $23.8 billion niche within the $1.5 trillion global mental health market