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200+ Free Online Tools for Everyday Tasks.
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SmartTools India Online
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EVERYDAY TOOLS
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Choose a category to open its tools. The full tool list stays tucked away until you select a category or search.
ENGINEERING STUDIO / PRACTICAL CALCULATORS
Engineering calculations.
Made practical.
Find branch-specific calculators for real engineering tasks—from motor current and preliminary breaker references to concrete quantities, machining parameters, electronics and process calculations.
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ElectricalLoad & power
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CivilMaterial & quantity
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MechanicalForce & motion
100+engineering calculators
12engineering branches
SIunit-aware formulas
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CHOOSE YOUR DISCIPLINE
Explore by engineering branch
Open a branch to see its calculators, formulas and worked examples.
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Use engineering results responsibly. Calculators provide estimates based on stated inputs and assumptions. Safety-critical selections—such as breakers, cables, structural members and machinery—must be checked against applicable standards and by a qualified professional.
BUILT FOR EVERYONE
Useful by default.
Simple by design.
Everything runs in your browser where possible, keeping common calculations and text processing quick and convenient.
Privacy-first
Your normal inputs stay on your device.
Responsive
Comfortable on phones, tablets and desktops.
Growing
New practical tools can be added anytime.
FREE ONLINE TOOLS
Calculators, converters and useful everyday tools
SmartTools India brings together free online calculators, unit converters, text tools, finance tools, date and time utilities, health math tools and developer utilities. Use the search and category filters above to find a tool quickly, with no signup required for normal use.
HOW TO GET RELIABLE RESULTS
A simple guide to using online tools
Choose the right tool, enter values with the correct units, and check the assumptions behind the result.
1. Percentage calculator
To find a percentage of a number, convert the percentage to a decimal and multiply it by the number.
Example: 10% of 200 = 0.10 × 200 = 20.
Use this for percentage increases, discounts and other everyday comparisons. For percentage change, compare the difference with the original value.
2. GST calculator
For an amount before GST, calculate tax by multiplying the taxable amount by the GST rate. Add the tax to get the total.
Example: ₹1,000 at 18% GST gives ₹180 tax and a total of ₹1,180.
Actual GST treatment can depend on the product, service, transaction and applicable tax rules. Verify the rate before using the result for billing or filing.
3. Word counter
Paste or type text to review its word count, characters and other available text statistics before editing or submitting it.
Example: “Smart Tools India” contains 3 words.
Different platforms may treat hyphenated terms, symbols or whitespace differently, so check the rules of the destination when a strict limit applies.
4. Unit converters
Select the matching source and destination units before converting a measurement. Confirm that both units describe the same type of quantity.
Example: 1 kilometre = 1,000 metres.
For engineering, construction or laboratory work, verify units and rounding against the relevant specification before relying on a converted value.
5. EMI calculator
For a standard fixed-rate loan, EMI depends on principal, monthly interest rate and number of payments. Compare the monthly amount with total repayment and total interest.
Illustration: ₹1,00,000 borrowed at a nominal 12% annual rate for 24 months gives an estimated EMI of about ₹4,707.35 before fees or other lender-specific adjustments.
6. QR Code Generator
Choose concise content, generate the code, then scan the saved file from another device. Check the destination before opening a QR link.
Privacy: QR codes do not encrypt content. This generator uses an external endpoint to create QR images, so do not enter sensitive information.
Accuracy, privacy and responsible use
SmartTools India is intended for general calculations and productivity tasks. Results depend on the values and assumptions entered, and some tools use estimates or third-party reference data. Check important financial, tax, medical, legal and engineering results with an appropriate authoritative source or qualified professional. Do not enter passwords or sensitive personal information into general-purpose tools. See our Disclaimer and Privacy Policy for more information.
Frequently asked questions
Are the tools free to use?
The tools are available without a paid subscription or account requirement for normal use. Some features, such as exchange-rate retrieval, depend on third-party services being available.
Do I need to install anything?
No installation is required for the browser-based tools. Open the website on a supported browser, choose a tool and enter the requested values.
Are calculator results professional advice?
No. Calculations are for general information and convenience. Verify important decisions with relevant official guidance or a qualified professional.
How can I suggest a new tool or report a problem?
Use the tool suggestion form on the homepage or visit our Contact page to send feedback or corrections.
ABOUT SMARTTOOLS INDIA
A practical toolbox for everyday problems.
SmartTools India brings common calculators, converters, writing helpers and developer utilities into one clean interface.
✓ No signup required✓ Copy-friendly results✓
Favorites & recent tools✓ Dark mode
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