Finance calculators, health metrics, text formatters, developer utilities — all running 100% in your browser. No accounts. No uploads.
Calculate EMIs, loan payments, VAT rates, and other financial projections.
Calculate your Equated Monthly Instalment (EMI) for home, car, or personal loans with an amortization schedule.
Determine total interest and monthly payments for a fixed-rate loan. See the complete repayment timeline.
Add or remove Value Added Tax (VAT) from a price. Works with custom and standard tax rates.
Encode, decode, format, and debug JSON, JWTs, regex, and API requests.
Build and validate cron schedule expressions with a human-readable preview. Convert to systemd timer syntax.
Decode JSON Web Tokens client-side to inspect headers and payloads. Generate signed JWTs for testing.
Send HTTP requests (GET, POST, PUT, DELETE) directly from the browser and inspect the full response.
Convert JSON to YAML and YAML to JSON instantly in your browser. Paste, convert, and copy — no installs, no uploads, works offline.
Calculate BMR, water intake, and other personal health metrics.
Find out exactly how much water you should drink daily based on your weight, activity level, and climate.
Calculate your Basal Metabolic Rate (BMR) using the Mifflin-St Jeor equation to plan your daily calorie goals.
Calculate daily macro targets (protein, carbs, fat) in grams and calories for fat loss, muscle gain, or keto.
Calculate percentage increases, decreases, and differences instantly.
Format, convert, and transform text strings in seconds.
Work with dates, ages, countdowns, and time differences.
Extract, analyse, and optimise YouTube video metadata, tags, and SEO data.
Convert, compress, and transform images entirely in your browser. No uploads, no accounts.
What is ToolEka
ToolEka is a collection of free online tools designed to save time for developers, students, freelancers, and anyone who needs quick answers without hunting through cluttered, ad-heavy websites. Every tool — from the EMI calculator to the JWT decoder — runs entirely inside your browser with no server involvement.
Whether you need to calculate a monthly loan payment, check how much water to drink today, decode a JSON Web Token, or generate a clean URL slug, ToolEka gives you instant results the moment you start typing. No page reloads, no waiting for a server round-trip, and no account creation.
Developers can use the API request tester to fire off HTTP requests and inspect responses directly from the browser, generate cron expressions with a human-readable schedule preview, or decode JWTs to verify their payloads during testing. Finance tools cover EMI calculations with a full amortization schedule, loan repayment timelines, and VAT add/remove for any tax rate. Health tools let you calculate your Basal Metabolic Rate and daily water intake goals based on your weight and activity level.
All tools on ToolEka are completely free to use, with no usage limits, no login walls, and no data leaving your device. The site is designed to load fast, work offline after the first visit, and stay out of the way so you can focus on the task at hand.
Privacy
Most web tools transmit your passwords, logs, and sensitive code to remote servers. ToolEka removes that step entirely — every computation runs inside your browser's local JavaScript engine, reducing unnecessary server-side exposure.
100% Client-Side
No server round-trips. Once loaded, all tools work offline with zero network overhead.
Instant Results
Without backend latency, calculations and formatting happen in real time as you type.
No Account Required
Nothing to sign up for, no cookies, no tracking — just open the tool and use it.
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