About Solmint

Our Mission

Solmint exists to make high-quality calculation tools accessible to everyone, everywhere, at no cost. We believe that financial literacy, health awareness, and mathematical competence should not be locked behind paywalls, subscriptions, or app stores. Every calculator on Solmint is free to use, runs entirely in your browser, and requires no account or personal information. Whether you are a student working through calculus homework, a homebuyer comparing mortgage rates, a traveler splitting a restaurant bill in a foreign currency, or a developer converting between numeral systems, our tools are designed to give you accurate, instant answers without friction.

We started Solmint after noticing that most free calculator websites are cluttered with advertisements, require sign-ups that harvest email addresses, or bury useful features behind premium tiers. We wanted to build something different: a clean, fast, privacy-respecting collection of tools that works on any device and never asks you to create an account. That principle guides every decision we make about what to build and what not to build.

Our Privacy Commitment

Privacy is not a feature we added on top — it is the foundation Solmint is built on. Every calculation happens locally in your browser. Your inputs, calculation history, saved scenarios, and personal preferences are stored in your browser's local storage and are never transmitted to our servers or shared with any third party. We do not use tracking cookies. We do not run analytics scripts that profile your activity. We do not sell or share user data because we do not collect it in the first place.

When you use the Currency Converter, exchange rates are fetched from a public financial data API, but the amounts you enter and the conversions you perform stay in your browser. When you use the Split Bill Calculator, your group's names and bill details remain on your device. When you use the scientific calculator, your expressions and results are saved locally for your convenience and never uploaded. This local-first approach means Solmint works even with a slow or intermittent internet connection, and it means your data stays under your control at all times.

Our Vision

We envision a web where practical tools are universally accessible, culturally inclusive, and genuinely free. Solmint supports approximately 28 native numeral systems — including Hindi (Devanagari), Arabic, Bengali, Tamil, Telugu, Persian, Thai, Burmese, Khmer, and many more — because we believe people should be able to work with numbers in the script they grew up with, not just Western Arabic digits. Our dual calculator mode goes further: it lets you enter a value in one numeral system and see it instantly in another, making Solmint a practical bridge between numeral scripts for educators, students, and multilingual users.

We are continuously expanding our toolset based on what users actually need. Our roadmap is driven by real feedback, not by feature parity with competitors. If a tool does not exist yet and would genuinely help people make better decisions, we want to build it. If an existing tool can be made more accurate, more inclusive, or easier to use, we want to improve it. Every tool we ship meets the same standard: it must be free, private, accurate, and useful on the first visit without any setup.

What We Offer

Solmint provides over 25 free calculators and practical tools, organized into four categories so you can find what you need without scrolling through an overwhelming list. Here is what each category includes:

Scientific & Math

A scientific calculator with five modes (Basic, Advanced, Calculus, Complex, Statistics), plus dedicated tools for percentages, fractions, geometry (2D and 3D shapes), graphing (plot up to 6 functions), matrix operations (up to 10x10), and an equation solver for linear, quadratic, and polynomial equations with step-by-step solutions.

Financial

A loan calculator with amortization schedules, a mortgage calculator with taxes and insurance, a currency converter with live rates for 49 world currencies, a unit price comparison tool, a GST calculator with CGST/SGST/IGST support, and a split bill calculator with equal, percentage, and itemized splitting plus settlement tracking.

Fitness & Health

A BMI calculator with standard health organization classifications, a calorie calculator using the Mifflin-St Jeor equation with personalized macro recommendations, and a weight goal calculator that creates realistic timelines for weight loss or gain based on your daily calorie deficit or surplus.

Practical Tools

A date calculator with business-day counting, an age calculator with live time tracking, a stopwatch and timer with lap history, a world time zone comparison tool with meeting planner, a unit converter for length, weight, volume, temperature, and more, a distance calculator with interactive map routing, and a leave calculator with holiday presets for multiple countries.

Supported Numeral Systems

The Solmint scientific calculator supports approximately 28 native numeral systems, making it one of the most culturally inclusive calculators available online. You can switch between numeral systems from the settings, and all input and output will be displayed in the selected script. The supported systems include: Western Arabic (0-9), Hindi/Devanagari, Eastern Arabic, Bengali, Tamil, Telugu, Persian, Thai, Burmese, Khmer, Gujarati, Kannada, Malayalam, Punjabi, Odia, Lao, Tibetan, Mongolian, Limbu, Cham, Balinese, Javanese, Lepcha, Meetei, Olchiki, Sundanese, Tai Tham, and Adlam. In dual mode with linked calculators, you can enter a value in one numeral system and see it instantly displayed in another, which is useful for educators, students, and anyone working across multiple numeral scripts.

What Makes Solmint Different

Most free calculator websites are funded by advertising, which means they prioritize page views over usability. Ads slow down the page, distract from the tool, and often push the actual calculator below the fold on mobile. Solmint has no ads on any page, ever. The calculator is the first thing you see when you open a tool, and it works immediately.

Many calculator sites require you to create an account to use advanced features or save your work. Solmint has no accounts. Your history, saved scenarios, and preferences are stored in your browser's local storage, so they persist across sessions on the same device without any sign-up. This also means there is no email to verify, no password to remember, and no risk of your data being exposed in a breach.

Some tools only work on desktop or require a specific browser. Solmint is built with responsive web standards and works on any modern browser on any device — phones, tablets, laptops, and desktops. The layout adapts to your screen size automatically, and touch-friendly buttons make it easy to use on mobile without zooming or scrolling horizontally.

Finally, Solmint's support for 28 numeral systems sets it apart from virtually every other online calculator. Whether you are a student in India who prefers Devanagari digits, a researcher working with Arabic manuscripts, or a teacher explaining different numeral scripts to your class, Solmint lets you work in the numeral system that makes sense to you — and convert between systems in real time using dual linked mode.

Contact Us

We welcome feedback, feature requests, and bug reports from our users. If you have an idea for a new calculator, a suggestion for improving an existing tool, or a question about how something works, we would love to hear from you. Visit our contact page to send us a message directly — we read every one and use them to prioritize what we build next.

Solmint is a living project. We update our tools regularly based on user feedback, changes in financial regulations, new scientific guidelines, and our own quality standards. When you use Solmint, you are using a tool that is actively maintained and improved — not an abandoned side project. Thank you for being part of that journey.