Calculate Online | Free Calculators by Vrushabh Deshmukh | 2026
Calculate Online is a free collection of 50+ online calculators covering personal finance, investments, solar energy, government schemes, and computer science tools — built for everyday users who want fast, accurate answers without the clutter.
The site is designed to serve both Indian users navigating tools like SIP returns, EMI planning, and 8th Pay Commission calculations, as well as a global audience looking for reliable finance and energy estimation tools.
Every calculator on this site is independently built and regularly reviewed for accuracy. We do not copy tools from other sources. All calculators are completely free to use — no sign-up, no payment, no ads.
About the Author — Founder of Calculate Online
Vrushabh Deshmukh is the founder and developer of Calculate Online and the studio behind it, Codebage.
He holds a degree in Commerce and brings hands-on experience in personal finance, WordPress development, and Android app development. Over the years, he has built digital tools and plugins through Codebage, with a focus on making complex calculations simple and accessible.
Calculate Online grew out of a personal frustration — the lack of clean, trustworthy, ad-free calculators for everyday financial decisions like SIP planning, solar savings estimation, and loan EMI calculations. Rather than settling for what was available, Vrushabh built the tools himself — and has continued expanding the library based on what users actually need.
His content focus areas include:
- Long-term investment planning and CAGR analysis
- Retirement and SIP/SWP return calculations
- Rooftop solar cost and savings estimation for India
- Government salary and pension scheme calculators
He is based in Pune, Maharashtra, India.
🔗 Connect on LinkedIn: linkedin.com/in/codebage-codebage-2b1330357 🌐 Developer studio: codebage.com 📧 Email: shraddhadesh27@gmail.com
Why Trust Our Calculators?
- Built by a developer with a finance background — not outsourced or AI-generated content
- No ads, no sign-ups — every tool is completely free to use
- Regularly updated — calculators are reviewed when tax laws, subsidy rates, or market data changes
- Transparent methodology — each calculator page explains the formula and assumptions used
- User-first design — mobile-friendly, fast-loading, and designed for clarity
What We Cover
Calculate Online currently offers calculators across six categories:
- Personal Finance — EMI, SIP, SWP, investment returns, tax estimation
- Solar & Energy — rooftop solar sizing, battery cost, energy savings, solar pump costs
- Government Calculators — 8th Pay Commission salary and pension tools
- Technology Cost Tools — BigQuery pricing, Boolean algebra, K-Map simplification
- Price Checkers — old phone and laptop resale value estimators
- Education Tools — simplification practice for bank exam preparation
Get in Touch
Have a suggestion for a new calculator, found an error, or want to collaborate?
📧 Contact us ⏱ We typically respond within 24 hours.