About DevCalc
DevCalc is a free calculator platform built to give everyone — students, professionals, and everyday users — instant, accurate answers without needing a spreadsheet or a finance degree.
80+
Free Calculators
8
Categories
100%
Free Forever
0
Sign-ups Required
Calculations should be simple — for everyone.
Too many people avoid making financial or health decisions because the math feels overwhelming. DevCalc exists to remove that barrier. Whether you're a student checking your CGPA, a first-time home buyer calculating an EMI, or someone curious about their BMI — you should be able to get a clear answer in seconds, for free, without signing up for anything.
What You'll Find on DevCalc
100+ calculators across 8 categories — and growing every month.
Finance Calculators
Plan loans, investments, and taxes — EMI, SIP, FD, GST, PPF, NPS, HRA, Income Tax, and more.
🩺Health Calculators
Track your body — BMI, BMR, Calorie, Body Fat, Water Intake, Protein, Heart Rate, and more.
🎓Education Tools
Built for students — GPA, CGPA, Attendance, Marks Required, Study Hours, and Exam Countdown.
🚗Vehicle Calculators
Know your real running cost — Mileage and Fuel Cost calculators for petrol, diesel, and CNG.
🧮Math Calculators
From simple percentages to matrices, fractions, probability, and quadratic equations.
🛠️Developer Tools
Everyday dev utilities — JSON Formatter, UUID Generator, Base64, URL Encoder, JWT Decoder.
🏗️Construction Calculators
Estimate material quantities and costs — Bricks, Cement, Concrete, and House Construction Cost.
⚡Utility Calculators
Handy everyday tools — Age, Date, Unit Converter, Password Generator, QR Code, and more.
Why People Use DevCalc
Fast, honest, and built with the user in mind.
Accurate Results
Every calculator uses standard, verified formulas — the same ones used by banks, hospitals, and institutions.
Works on Any Device
Designed mobile-first. Whether you're on a phone, tablet, or desktop — it just works.
No Sign-up Required
No account, no email, no tracking. Open a calculator, get your answer, and you're done.
Always Free
No subscriptions, no paywalls, no hidden costs. Every calculator on DevCalc is free — forever.
Instant Results
Results appear as you type. No page reloads, no waiting — just fast, clean calculations.
Built for India
Calculators for GST, EMI, SIP, PPF, NPS, SSY, and income tax are tailored for Indian users.
Hi, I'm Aditya Singh 👋
I'm a Full Stack Developer from Jaunpur, Uttar Pradesh, India — and DevCalc is something I built because I kept running into the same problem: whenever I needed a quick financial or health calculation, I'd either find a cluttered website full of ads, or a tool that required sign-up just to show me a number.
So I built DevCalc — clean, fast, free, and focused entirely on giving you the answer you came for. No distractions, no accounts, no cost.
I work with React, Next.js, TypeScript, Node.js, Express, and MySQL. Every calculator on this platform is built and maintained by me, with careful attention to formula accuracy and mobile usability.
DevCalc is still growing — new calculators, blog guides, and comparison tools are added regularly. If there's a calculator you wish existed here, I genuinely want to hear about it.
80+
Calculators built
8
Categories covered
Made in India 🇮🇳
Jaunpur, UP
Got a suggestion or found a bug?
Every piece of feedback helps make DevCalc better. Whether it's a calculator request, a wrong result, or just a great work — I read every message personally.
DevCalc · 76, Pali, Gothawan, Jaunpur, Uttar Pradesh, India — 222162