
calculator.net
Calculator GST
Age Calculator
NZPayeCalculator.nz
onecalculator.online
Calculator-online.net
Omni Calculator
Free GST, EMI & age calculator for India — zero data stored

Scrimba
Codédex
CodeCrafters
Data Protocol
Codelita
Eloquent JavaScript
The State of JavaScript 2018
A free resource for learning and developing in JavaScript

Which is more popular?
Based on our record, JavaScript.com seems to be more popular. It has been mentioned 1 time since March 2021.
Website, pricing, platforms and company facts side by side.
|
|
|
|
|---|---|---|
| Website | zmpl.in | javascript.com |
| Pricing | — | |
| Platforms | — | |
| Company | Startup from India · 1 - 9 employees · 2025 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


ZMPL Tools is a free collection of 6 online calculators and text tools built for India — all running 100% in your browser. No sign-up. No account. No data ever leaves your device. What's included: GST Calculator — add or remove GST with CGST/SGST/IGST breakdown. Updated for 2026 slabs. EMI...
No description of JavaScript.com yet.
What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
No analysis of JavaScript.com yet.
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing ZMPL.in and JavaScript.com.
ZMPL.in's answer
ZMPL Tools is the only free online calculator suite built specifically for India that runs entirely inside your browser — no data is ever sent to our servers. While most free tools in India require you to sign up, log in, or quietly store your inputs for advertising and lead generation, ZMPL is architecturally incapable of seeing what you type. Every tool — whether it is our GST calculator with CGST SGST IGST breakdown, our EMI calculator for home and personal loans, our age calculator for sarkari exam eligibility, our percentage calculator, word counter, or grammar checker — performs all calculations in JavaScript directly inside your browser tab. Three things make ZMPL genuinely different from every competitor: First, true browser-only privacy. You can open any ZMPL tool, switch your device to airplane mode, and it still works perfectly. That is proof that your data never needs to leave your device. Second, India-first design. Our GST calculator is updated for the latest 2025–26 GST slabs and shows the full CGST, SGST, and IGST split — something global calculator tools consistently get wrong for Indian users. Third, zero monetisation traps. No freemium limits, no premium plan, no ads, no upsells. Every tool is completely free forever.
ZMPL.in's answer
There are three reasons to choose ZMPL Tools over alternatives like ClearTax, BankBazaar, Grammarly, or generic global calculator sites. 1. Your data is never collected — by design, not by promise. Most competing tools store what you type. ClearTax logs your GST inputs. BankBazaar harvests your loan details for lender lead generation. Grammarly stores and analyses your writing. ZMPL does not have a backend that receives your inputs — the architecture physically prevents data collection, not just a privacy policy that promises not to use it. 2. Built for Indian use cases that global tools ignore. Our GST calculator for small businesses in India handles GST-inclusive and GST-exclusive calculations with the correct CGST, SGST, and IGST split. Our age calculator for government exam forms gives the exact years, months, and days format required by SSC, UPSC, railway, and Agniveer applications. Our EMI calculator uses the standard Indian banking formula and supports home loans, personal loans, car loans, and education loans — with a full amortisation schedule. 3. No friction whatsoever. No account creation. No email verification. No cookie consent popups for tracking. No mobile app to download. Open the URL, use the tool, close the tab. Every tool works on mobile and desktop equally well and loads in under two seconds. For Indian students, small business owners, freelancers, and content creators who need fast, private, accurate tools — ZMPL Tools is the only product that combines all three without compromise.
ZMPL.in's answer
ZMPL Tools serves four distinct audiences across India, all united by the need for fast, accurate, private online tools with zero sign-up friction. Students preparing for competitive exams (SSC, UPSC, railway, banking, Agniveer). This is our largest and fastest-growing audience. Lakhs of students use our age calculator for sarkari exam eligibility every recruitment cycle to verify whether they fall within age limits — including SC, ST, and OBC age relaxation rules. Our percentage calculator is used to convert CGPA to percentage for university applications, and our word counter is used to check UPSC essay and answer writing lengths. Small business owners and self-employed professionals in India. India has over 65 million registered GST filers. Our free GST calculator India gives them instant GST-inclusive and GST-exclusive calculations with the CGST, SGST, and IGST breakdown — without logging into any portal or sharing business data. Salaried individuals planning loans. Home loan buyers, personal loan applicants, and anyone evaluating car or education loans use our EMI calculator online India to model repayments across different tenures and interest rates before speaking to a bank — without their financial details being sold to lenders. Writers, content creators, and students submitting academic work. Bloggers, journalists, and students use our online word counter free and grammar checker without login to check their work without sending their text to a US company's servers.
ZMPL.in's answer
ZMPL Tools was built out of a simple frustration that most people in India have experienced but never talked about: every free online tool either asks you to sign up, runs ads on your financial data, or quietly sends what you type to a server somewhere. The idea started with three recurring personal needs. Calculating GST for a client invoice — and realising every GST calculator in India either required a login or was a lead-generation front for a CA firm. Checking an EMI before calling a bank — and finding that every EMI calculator was owned by a lender who would immediately call you to sell you a loan. And checking an age for a government form — and finding that the only dedicated Indian age calculators were slow, ad-heavy, and often gave results in the wrong format. The question became: why does a simple arithmetic calculation require handing over your data to anyone? ZMPL Tools was built to answer that question. All six tools — the GST calculator, EMI calculator, age calculator, percentage calculator, word counter, and grammar checker — were designed from day one to run entirely in the browser. No backend receives your inputs. No database stores your calculations. No sales team follows up on your loan inquiry. The tools are built with Next.js for speed and reliability, hosted on a fast CDN, and updated regularly to reflect India-specific changes like new GST slabs, exam age limit revisions, and social media character limit updates. ZMPL Tools is permanently free. The goal is to be the most trusted collection of free online tools for students and small businesses in India — built with the same privacy standards that Indian users deserve but rarely get from free software.
ZMPL.in's answer
ZMPL Tools is built on a modern, lightweight technology stack chosen specifically to support browser-only computation and fast page loads across India's varied network conditions. Next.js (React framework) — The entire site is built with Next.js, which provides server-side rendering for fast initial page loads and SEO-friendly HTML output. Tool pages are statically generated where possible for maximum speed. React — All six tools (GST calculator, EMI calculator, age calculator, percentage calculator, word counter, and grammar checker) are built as React components. All calculation logic runs client-side in the user's browser — no API calls are made when a calculation is performed. JavaScript (vanilla computation) — Every formula — the GST inclusive/exclusive split, the standard PMT-based EMI formula, date difference arithmetic for age calculation, and character counting — is implemented in pure JavaScript running entirely in the browser. This is what makes ZMPL Tools genuinely private: there is no server endpoint that receives user inputs. Tailwind CSS — Used for styling across all tool pages and the blog, providing a consistent, responsive design that works equally well on mobile and desktop. Vercel — Deployed on Vercel's global CDN, ensuring fast load times for users across India — from metro cities to Tier 2 and Tier 3 towns. MDX / Markdown — Blog content is written in Markdown and compiled at build time, making the content-heavy blog posts fast-loading and easily indexable by search engines. The architecture prioritises three things above all: speed, privacy, and zero infrastructure cost to the end user.
ZMPL.in's answer
ZMPL Tools is a free consumer product with no paid accounts or enterprise customers — so rather than named organisations, our users are best described by the communities and use cases that rely on our tools every day. - Students preparing for SSC CGL, SSC CHSL, UPSC Civil Services, IBPS PO, railway NTPC, and Agniveer recruitment — who use our free age calculator to verify exam eligibility before applying - Small business owners and self-employed GST-registered traders across India — who use our GST calculator for quick invoice calculations without logging into any government portal - Freelancers, content writers, and bloggers — who use our word counter and grammar checker to review their work without sending drafts to third-party servers - Students in Indian universities converting their CGPA to percentage — who use our percentage calculator for job applications, further studies, and scholarship forms - Salaried individuals researching home loans, personal loans, and car loans — who use our EMI calculator to model repayments privately before approaching a bank - CA students and accounting professionals — who use our GST calculator to quickly verify client invoice totals with the correct CGST, SGST, and IGST split Since launching, ZMPL Tools has been used by visitors from across India — with strong usage from Maharashtra, Delhi NCR, Karnataka, Uttar Pradesh, and West Bengal — reflecting the nationwide demand for fast, private, India-specific free online tools.
Share your experience with using ZMPL.in and JavaScript.com. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Tracking ZMPL.in since May 2026.
The best resource I know of is Javascript.com for learning Javascript for the first time. It's made by Pluralsight which is a site that contains courses. - Source: dev.to / over 4 years ago
When comparing ZMPL.in and JavaScript.com, you can also consider the following products.

Online calculator for quick calculations, along with a large collection of calculators on math, finance, fitness, and more, each with related in-depth information.
Compare calculator.net to ZMPL.in or JavaScript.com:

Interactive coding screencasts created in an instant
Compare Scrimba to ZMPL.in or JavaScript.com:

FREE Online Advance Australian GST Calculator that calculates GST Inclusive and Exclusive promptly. Mobile-friendly and well-optimized for bulk excl and incl GST calculations
Compare Calculator GST to ZMPL.in or JavaScript.com:


Instantly calculate the age of someone or something using this simple, user-friendly birth date calculator.
Compare Age Calculator to ZMPL.in or JavaScript.com:

Programming exercises for experienced engineers.
Compare CodeCrafters to ZMPL.in or JavaScript.com: