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Lightning-fast converters, calculators, legal document generators, and business tools that respect your privacy and run instantly — no sign-up, no upload.
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WEBP to PNG Converter
Convert WEBP images to PNG instantly in your browser. Nothing is uploaded to a server.
Freelance Hourly Rate Calculator
Work out what to charge per hour based on your income goal, expenses, and billable time.
Subscription Cost Analyzer
Add up your Netflix, Spotify, and other subscriptions to see what they really cost over 1, 5, and 10 years.
Image Resizer & Compressor
Resize and compress photos in your browser. Pick a format and quality, download instantly.
Currency Converter
Convert between 12 major currencies with live exchange rates. Pick any pair, no sign-up.
Timezone Converter
Convert a time between 12 major cities worldwide, with daylight saving handled automatically.
WEBP to JPG Converter
Convert WEBP images to JPG instantly in your browser, with an adjustable quality slider.
Image to PDF Converter
Combine one or more JPG, PNG, or WEBP images into a single downloadable PDF.
PDF to Image Converter
Turn every page of a PDF into a downloadable PNG or JPG image.
Merge PDF Files
Combine multiple PDF files into one, in any order you choose.
Split PDF File
Extract specific pages or page ranges from a PDF into a new file.
Length Converter
Convert between mm, cm, m, km, inches, feet, yards, and miles instantly.
Weight Converter
Convert between mg, g, kg, tonnes, ounces, pounds, and stone instantly.
Temperature Converter
Convert between Celsius, Fahrenheit, and Kelvin instantly.
Area Converter
Convert between square meters, square feet, acres, hectares, and more instantly.
Volume Converter
Convert between milliliters, liters, gallons, quarts, pints, and cups instantly.
Speed Converter
Convert between mph, km/h, m/s, knots, and feet per second instantly.
Digital Storage Converter
Convert between bits, bytes, KB, MB, GB, and TB instantly.
Time Converter
Convert between milliseconds, seconds, minutes, hours, days, weeks, months, and years instantly.
Pressure Converter
Convert between pascals, kilopascals, bar, psi, atmospheres, and mmHg instantly.
Fuel Economy Converter
Convert between MPG (US), MPG (UK), km/L, and L/100km instantly.
Data Transfer Rate Converter
Convert between bps, Kbps, Mbps, Gbps, MB/s, and GB/s instantly.
QR Code Generator
Create a QR code from a link, WiFi network, contact card, email, or plain text — free, no sign-up.
Favicon Generator
Turn any image into a full favicon set — 16px to 512px, plus a ready-to-paste HTML snippet.
Social Media Image Resizer & Cropper
Crop and resize a photo to the exact pixel size for Instagram, Facebook, X, or YouTube — pick a preset, drag to reposition, download.
Instagram Image Size Tool
Crop a photo to the exact size for an Instagram square post, portrait post, Story, Reel cover, or profile picture.
Facebook Image Size Tool
Crop a photo to the exact size for a Facebook post, cover photo, profile picture, Story, or event cover.
X (Twitter) Image Size Tool
Crop a photo to the exact size for an X post, header banner, or profile picture.
YouTube Thumbnail Maker
Crop a photo to the exact 1280x720 YouTube thumbnail size, plus channel banner and profile picture presets.
Mortgage Calculator
Estimate your monthly mortgage payment, total interest, and full amortization schedule.
Auto Loan Calculator
Estimate your monthly car payment, total interest, and payoff schedule for a new or used vehicle.
Personal Loan Calculator
Estimate your monthly payment and total interest on a personal loan.
Retirement Savings Calculator
Project how your retirement savings could grow with regular contributions and compound interest.
Compound Interest Calculator
See how an investment grows over time with compound interest and regular monthly contributions.
Debt Payoff Calculator
Compare the debt snowball and avalanche methods to see which pays off your debts faster and cheaper.
NDA Generator
Create a mutual or one-way non-disclosure agreement and download it as a signable PDF.
Bill of Sale Generator
Create a general or vehicle bill of sale with buyer, seller, and item details as a signable PDF.
Power of Attorney Generator
Create a general or limited power of attorney naming your agent, ready for notarization.
Life Insurance Needs Calculator
Estimate how much life insurance coverage your family would need using the DIME method.
Car Insurance Coverage Calculator
Find recommended liability limits and whether full coverage is still worth it for your car.
Invoice Generator
Create a professional invoice with line items, tax, and totals, then download it as a PDF.
ROI Calculator
Calculate your return on investment and annualized ROI from an initial and final value.
Break-Even Point Calculator
Find how many units you need to sell to cover your costs, based on fixed and variable costs.
EXIF Data Viewer & Remover
See what metadata is hidden in a photo — including GPS location — then strip it before you share it.
Lease Agreement Generator
Create a residential lease with rent, deposit, pet, and utility terms, then download it as a signable PDF.
Promissory Note Generator
Create a lump-sum or installment promissory note, with the monthly payment calculated for you.
Independent Contractor Agreement Generator
Create a PDF contractor agreement covering services, payment, IP ownership, and termination.
Home Insurance Coverage Calculator
Estimate dwelling rebuild cost, personal property, and liability coverage for a homeowners policy.
Renters Insurance Coverage Calculator
Estimate the personal property, liability, and loss-of-use coverage you need as a renter.
Umbrella Insurance Needs Calculator
Find how much umbrella liability coverage you need based on net worth and lawsuit risk factors.
Profit Margin & Markup Calculator
Calculate gross margin and markup from cost and price, or find the price you need for a target margin.
Business Loan Calculator
Estimate your monthly payment and total interest on an SBA, term, or equipment loan.
Employee Cost Calculator
Find the true fully-loaded cost of an employee beyond salary — payroll tax, benefits, and overhead.
Net Worth Calculator
Add up your assets and liabilities to calculate your net worth.
Home Affordability Calculator
Find the home price you can afford using the 28/36 debt-to-income rule lenders use.
Paycheck Calculator (Take-Home Pay)
Estimate your take-home pay after federal income tax, Social Security, and Medicare.
Rent vs. Buy Calculator
Compare the true long-term cost of renting vs. buying a home, including a breakeven year.
Resize Images & Combine into PDF
A 2-in-1 workflow: resize and compress your photos, then combine them into a single PDF, in one pass.
Strip Photo Metadata & Combine into PDF
A 2-in-1 workflow: remove GPS and EXIF metadata from your photos, then combine them into a single PDF.
JSON Formatter & Validator
Paste JSON to pretty-print, minify, and validate it instantly, with clear error messages if it's broken.
Base64 Encoder & Decoder
Encode text to Base64 or decode a Base64 string back to plain text, instantly.
URL Encoder & Decoder
Encode special characters for a URL, or decode a percent-encoded URL back to readable text.
Word & Character Counter
Count words, characters, sentences, and paragraphs in any text, with reading time estimated live.
Text Case Converter
Convert text to UPPERCASE, lowercase, Title Case, camelCase, snake_case, kebab-case, and more.
Lorem Ipsum Generator
Generate placeholder text by words, sentences, or paragraphs for mockups and layouts.
Hash Generator (MD5, SHA-1, SHA-256)
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes of any text, instantly and entirely in your browser.
Regex Tester
Test a regular expression against sample text and see matches, groups, and flags highlighted live.
Diff Checker
Compare two blocks of text and see exactly what was added, removed, or changed, line by line.
UUID Generator
Generate random version 4 UUIDs, one at a time or in bulk, ready to copy or download.
Timestamp Converter
Convert Unix timestamps to human-readable dates and back, in any timezone.
Color Converter
Convert colors between HEX, RGB, HSL, and HSV, with a live preview swatch.
CSV to JSON Converter
Paste or upload CSV data and convert it to JSON — or paste JSON and convert it back to CSV.
Markdown Previewer
Write or paste Markdown and see the rendered HTML preview update live, side by side.
More tools coming soon →
New calculators and converters are added regularly.
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Why TechyTools.in?
Runs on your device
Most tools here process everything locally in your browser using standard web APIs. Your files and numbers never touch a server, so there's nothing of yours to upload, store, or lose.
No waiting around
Nothing to upload means nothing to wait on. Results appear as fast as your own device can compute them — usually instantly.
Free, no account
Every tool is free with no sign-up. The site is supported by ads instead of subscriptions — open a tool, use it, and go.