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Free Online Tools
Every free calculator, image tool and text tool on Technical Adda, sorted by category and easy to search.
Popular tools 8
What most people use
- EMI CalculatorWork out the monthly EMI, total interest and year-by-year schedule for a home, car or personal loan.
- Income Tax CalculatorCompare your tax under the new and old regimes for FY 2026-27 and see which saves more.
- SIP CalculatorEstimate what a monthly SIP could grow to, with an optional yearly step-up.
- BMI CalculatorCheck your Body Mass Index on the WHO, Asian and Indian scales, plus a healthy weight for your height.
- Image ResizerResize an image to exact pixels or a target size in KB, with the aspect ratio locked.
- Image CompressorShrink JPG, PNG and WebP files, or hit an exact KB limit for form uploads.
- PDF to JPGTurn any or all pages of a PDF into JPG images. Opens locked PDFs too.
- Typing Speed TestTest your typing speed in English or Hindi and get your WPM and accuracy.
Money & finance 8
Loans, savings, investments, tax and GST
- EMI CalculatorWork out the monthly EMI, total interest and year-by-year schedule for a home, car or personal loan.
- SIP CalculatorEstimate what a monthly SIP could grow to, with an optional yearly step-up.
- Income Tax CalculatorCompare your tax under the new and old regimes for FY 2026-27 and see which saves more.
- GST CalculatorAdd or remove GST at 5%, 18%, 40% and other rates, with the CGST, SGST and IGST split.
- FD CalculatorSee the maturity value and interest on a fixed deposit, with quarterly or other compounding.
- RD CalculatorFind the maturity value of a monthly recurring deposit at a bank or post office.
- PPF CalculatorEstimate your PPF maturity amount over 15 years or more at the current 7.1% rate.
- Inflation CalculatorSee the salary you will need in future to match what you earn today, and whether your raises keep up.
Health & fitness 6
Weight, calories, body fat and pregnancy
- BMI CalculatorCheck your Body Mass Index on the WHO, Asian and Indian scales, plus a healthy weight for your height.
- Calorie CalculatorFind the calories you burn each day and how much to eat to lose, keep or gain weight.
- BMR CalculatorWork out your Basal Metabolic Rate with the Mifflin-St Jeor and Harris-Benedict formulas.
- Body Fat CalculatorEstimate your body fat percentage from a tape measure, using the US Navy method.
- Pregnancy Due Date CalculatorFind your due date, how many weeks pregnant you are and key pregnancy milestones.
- Ovulation CalculatorSee your fertile window, ovulation day and next period for the next three cycles.
Student & everyday 5
Marks, typing speed, age and dates
- Age CalculatorFind your exact age in years, months and days, on any date, plus a countdown to your next birthday.
- Percentage CalculatorFind X% of a number, what percent one number is of another, or the percentage change.
- CGPA to Percentage CalculatorConvert your CGPA to a percentage with the CBSE, VTU or ×10 formula, or your own.
- Typing Speed TestTest your typing speed in English or Hindi and get your WPM and accuracy.
- Date CalculatorCount the days, weeks, months and working days between two dates.
Writing & text 2
Word counts and AI writing checks
Image tools 10
Resize, compress, crop and edit photos
- Image ResizerResize an image to exact pixels or a target size in KB, with the aspect ratio locked.
- Bulk Image ResizerResize many images at once, with an optional KB limit, and download them as a ZIP.
- Image CompressorShrink JPG, PNG and WebP files, or hit an exact KB limit for form uploads.
- Crop ImageDrag to crop, or lock to 1:1, 4:3, 16:9 and other ratios.
- Flip ImageMirror an image horizontally or vertically in one click.
- Rotate ImageRotate by 90°, 180° or any custom angle.
- Image EnlargerUpscale an image 2×, 3× or 4× with smooth resampling.
- Collage MakerCombine photos into a neat grid collage with spacing and a background.
- Color PickerClick anywhere on an image to get its HEX, RGB and HSL colour.
- Meme GeneratorAdd classic top and bottom meme text to any picture.
Image & PDF converters 10
Switch between JPG, PNG, WebP, HEIC, SVG, PDF and Word
- Image ConverterConvert images between JPG, PNG and WebP.
- PDF to JPGTurn any or all pages of a PDF into JPG images. Opens locked PDFs too.
- PDF to PNGTurn any or all pages of a PDF into lossless PNG images. Opens locked PDFs too.
- HEIC to JPGConvert iPhone HEIC photos to JPG that open everywhere.
- WebP to JPGConvert WebP images to widely supported JPG.
- PNG to JPGConvert PNG to smaller JPG files, with a background for transparency.
- JPG to PNGConvert JPG photos to lossless PNG.
- SVG ConverterRender SVG files to PNG, JPG or WebP at any width.
- PNG to SVGTrace a PNG or JPG into a scalable SVG vector.
- Word to PDFConvert a Word DOCX file to PDF with its fonts, tables and page layout kept as they are.
Astrology & fun 6
Kundli, rashi, numerology and love by name
- Kundli Matching by NameEnter the boy’s and girl’s names to get a 36-point Ashtakoota gun milan score, with every koota explained.
- Love CalculatorType two names to get a love percentage and your FLAMES result, with the maths shown.
- Rashi by NameType your name in English or Hindi to find your rashi, nakshatra and rashi lord.
- Nakshatra by NameType your name in English or Hindi to find your nakshatra, pada, lord, gana, yoni and nadi.
- Numerology CalculatorFind your name number, ruling planet and Pythagorean core numbers, with the letter-by-letter working shown.
- Numerology CompatibilityType two names to compare their numerology name numbers and number families.
About these free tools
Technical Adda has 47 free online tools, all listed above: money and tax calculators, health calculators, student tools, image editors and converters, writing tools and name-based astrology tools. Every one runs in your browser, needs no sign-up, and keeps what you type or upload on your own device.
How to find the right tool
- Type what you want to do in the search box at the top, such as loan, tax, weight, resize or PDF. Every word you type has to match, so “pdf jpg” narrows the list to one tool.
- Or tap a category to see only those tools. “Popular tools” is a short list to start with.
- Open a tool. Calculators show a result as soon as every field is filled in, and many open with sample numbers so you see an answer straight away.
What you can do here
| Category | Tools | Use it for |
|---|---|---|
| Money and finance | 8 | Loan EMI, SIP returns, FD, RD and PPF maturity, income tax under both regimes, GST and inflation. See all finance calculators. |
| Health and fitness | 6 | BMI, daily calories, BMR, body fat, pregnancy due date and ovulation. See all health tools. |
| Student and everyday | 5 | Age as on an exam cut-off date, days between two dates, percentages and marks, CGPA to percentage, and a typing speed test in English and Hindi with a 10-minute SSC mode. |
| Writing and text | 2 | Count words, characters and reading time with the word counter, or check how AI-written a text reads. |
| Image tools | 10 | Resize, bulk resize, compress, crop, flip, rotate and enlarge photos, make collages and memes, and pick colours. See all image tools. |
| Image and PDF converters | 9 | Switch between JPG, PNG, WebP, HEIC and SVG, and turn PDF pages into JPG or PNG. |
| Astrology and fun | 6 | Kundli matching, rashi, nakshatra and numerology by name, numerology compatibility and a love calculator. |
Private by design
Every tool works inside your browser. The numbers you type and the photos or PDFs you add never leave your device, so there is nothing to upload and nothing for us to keep. Once a page has loaded, most tools keep working even on a slow or patchy connection.
Written and checked for India
Money tools use Indian rules and lakh and crore formatting, with tax slabs for FY 2026-27, GST rates after the September 2025 changes and current small savings rates. The BMI calculator shows Asian and Indian guideline categories next to the WHO one. Student tools follow official sources, such as the CBSE and university CGPA rules and the SSC typing speeds. Each tool page explains its formula, gives a worked example and links its sources, so you can check the maths yourself.
FAQ
Free Online Tools FAQs
Are these tools really free?
Yes. Every tool on this page is free to use as often as you like, with no sign-up, no login and no limit on how many times you use it. There are no paid versions or locked features, and the result you see is the full result.
Is my data safe when I use these tools?
Yes. The tools run in your browser, so the numbers you type and the images or PDFs you add stay on your device. Nothing is uploaded to our server or saved by us, and closing the page clears what you entered. The word counter can keep a draft in your own browser if you leave its Auto-save on.
Do the tools work on mobile?
Yes. Every tool is built for phones first and works in Chrome, Safari and other modern browsers on Android and iPhone. Image and PDF tools may be a little slower on older phones with very large files, because the work happens on your device instead of a server. The typing test works best with a physical keyboard.
How accurate are the calculators?
The calculators use the standard published formulas, and each page shows the formula and a worked example you can check. Results are estimates: your bank, fund, doctor, university or tax filing may differ slightly because of rounding, fees or rules specific to you. When an official figure differs, the official figure wins.
How do I reduce a photo to 20 KB or 50 KB for a form?
Open the Image Compressor, add your photo and type the limit in the Target size in KB box. It finds the best quality that fits under that size. If the form also asks for exact pixels, set them first in the Image Resizer, which has its own KB box too. Always check the limits in your exam notice.
Can I convert a locked PDF like e-Aadhaar to JPG?
Yes. Add the PDF to PDF to JPG and type its password in the Password box. The file is opened in your browser, so neither the PDF nor the password is sent anywhere. You can also type page numbers, such as 1 or 1-3, to convert only the pages you need instead of the whole file.
Are the tax, GST and interest rates up to date?
Yes, as of October 2026. The income tax calculator uses the new and old regime slabs for tax year 2026-27, the GST calculator uses the rates in force now, and the PPF and RD pages use the October to December 2026 government rates. Each page shows when it was last updated and links the official source, so you can check it yourself.
Can I suggest a new tool?
Yes. Use the contact page to tell us which tool you would like next and what it should do. We add tools based on what readers ask for most, and we update the existing ones when rules or rates change, such as new tax slabs, GST rates or exam notices.