Free Online Calculators & Tools
154 free tools, mortgage & EMI calculators, BMI, QR code generator, tax & salary calculators and more. Free forever, no signup.
What FaridiaTech is, and who it is for
FaridiaTech is a library of 154 free tools in 17 categories, built for the moments when a number or a file stands between you and a decision. You might be checking what a mortgage really costs each month, splitting a restaurant bill fairly, working out a GPA, or shrinking a photo to fit a stubborn upload form. Whatever brought you here, the pattern is the same: type in what you know, get a clear answer, and get on with your day.
We built this site for people who are tired of the usual trade. Too many calculator and converter sites bury the answer behind an account wall, a download, or a free trial that quietly becomes a subscription. Here there is no signup, no credits and no trial clock. Every tool is free, and every tool runs in your browser, so the page you open is the whole product. If a tool cannot help you, closing the tab costs you nothing but a few seconds. FaridiaTech was built in 2026 by Ateeq Fareedi, its founder, who still writes the guides and maintains every tool himself.
How our calculators get their numbers
A calculator is only as honest as the figures behind it, so we take ours from the sources that publish them. Mortgage rates track Freddie Mac and its Primary Mortgage Market Survey, where the 30 year fixed rate averaged 7.40% and the 15 year rate 6.71% in mid October 2026. Loan limits follow the official tables too: the 2026 FHA limits published by HUD run from a floor of $541,287 to a high cost ceiling of $1,249,125, and those are the boundaries our housing tools work inside. When a survey or table is updated, our defaults are updated with it.
Benefits and tax tools follow the same rule. The Social Security COLA Calculator applies the 3.6% cost of living increase announced by the SSA, and the ACA percentages follow the IRS revenue procedure for 2026. Medicare figures come from CMS, and where a number is a projection we label it as one: the 2027 Part B premium of $209.50 a month is the Medicare Trustees projection, and the estimator page says so plainly rather than dressing a forecast up as a fact. The same labelling applies wherever a figure is forecast rather than final.
Every tool page shows its formula and a worked example, so you can follow the arithmetic yourself before you trust the answer. On the Medicare estimator, for instance, a single filer with a MAGI of $150,000 lands at $5,319.60 a year in total Part B and IRMAA cost, and you can follow the arithmetic tier by tier. When any figure on this site is an estimate or a projection, the page tells you, in words, next to the number itself. Nothing is hidden inside a black box.
Why everything is free, and how to pick the right tool
People reasonably ask how 154 tools can all be free, and the answer is architectural rather than generous. Because every calculation and conversion happens on your own device, using one of our tools costs us almost nothing per visit: there is no server farm crunching your numbers or storing your files. PDF and image tools never upload your documents at all. Advertising covers the running costs, and that is the whole business model: no accounts, no paywalls, no premium tier waiting behind the answer.
Picking the right tool is mostly a matter of starting from the question, not the category. If the question ends in a monthly payment, a total cost or a date, open the calculator with that job in its name and read its worked example first; it shows the exact inputs the tool expects. If the job involves a file, the PDF and image shelves hold the converters and editors. Still unsure, use the search and the category pages: each one explains, in plain words, what its tools do.
Last updated: October 30, 2026
New Tools
PDF to Excel
Turn PDF tables into editable Excel spreadsheets, right in your browser.
OCR PDF
Add an invisible, searchable text layer to any scanned PDF, on your device, for free.
Medicare Cost & IRMAA Calculator
Your income in, your real Medicare premium, Part B, Part D and IRMAA, out.
Trump Accounts Calculator
Your child’s age and monthly savings in, the estimated value at 18 out.
Scientific Calculator
Trig, logs, powers and roots, a full scientific keypad in your browser.
DS-160 Photo Checker
Already have a US visa photo? Test it against every DS-160 file rule in seconds, privately, in your browser.
Mortgage & Housing
Closing Costs Calculator
Know what you will really pay at the closing table.
Mortgage Amortization Calculator
See exactly where every mortgage dollar goes, month by month.
Mortgage Payoff Calculator
Shave years off your mortgage and keep the interest for yourself.
VA Loan Calculator
Veteran? Buy with $0 down, see your real monthly VA payment.
Mortgage Calculator
A price, a rate and a term in, the real monthly payment out.
Rent vs Buy Calculator
Your breakeven year, in one calculation.
Mortgage Refinance Calculator
Will a lower payment actually save you money? Find out.
Home improvement
Fence Calculator
Posts, rails, pickets and total cost from one measurement.
Roof Pitch Calculator
Rise and run in, pitch and angle out.
Roofing Calculator
From footprint and pitch to bundles and budget.
Deck Cost Calculator
Every line of a deck budget, including the railing.
Concrete Calculator
Slab volume, bags and ready mix cost from three measurements.
Paint Calculator
Wall size and coats in, gallons, litres and cost out.
Tile Flooring Calculator
Tile count, waste and cost from your floor size.
Mulch Calculator
Cubic yards, bags and cost for any bed or border.
Stair Calculator
Riser count, tread run and stringer length from one rise.
Everyday money
Tip Calculator
Tip, total and per person share in one tap.
Bill Split Calculator
Tax, tip and uneven shares, settled.
Hourly to Salary Calculator
What an hourly rate is really worth a year.
Loan Calculator
Monthly payment, total interest and total repaid for any loan.
Compound Interest Calculator
Deposits and contributions in, future value out.
Retirement Calculator
Your age and savings in, your retirement nest egg out.
Social Security COLA Calculator
Your current benefit in, your 2027 check, after the 3.6% COLA, out.
Debt Payoff Calculator
Balance, rate and payment in, freedom date out.
Freelance Rate Calculator
Target income in, the rate you must charge out.
Car Loan Calculator
Your true monthly car payment, price, tax, trade in and APR in one number.
50/30/20 Budget Calculator
Split every paycheck into needs, wants and savings.
Paycheck Calculator
What your salary looks like after taxes take their cut.
Profit Margin Calculator
Turn any two numbers into margin, markup, and sale price.
Tariff Cost Calculator
See what the tariff adds, per unit and in total.
Tax
US Sales Tax Calculator
Add tax, or work backwards from the total.
UK Income Tax Calculator
Your 2026/27 UK take home pay, band by band.
UK VAT Calculator
Net to gross, or gross back to net.
GST Calculator (Australia)
Add 10% GST or pull it back out, and see the GST slice.
Australian Postcode Lookup
Any suburb, any postcode, in one search.
ABN Checksum Validator
Catch a bad ABN before it hits the invoice.
Australia Income Tax Calculator
Your 2026 to 27 take home pay, ATO bracket by ATO bracket.
Canada Sales Tax Calculator
GST, HST, PST and QST for every province and territory.
EU VAT Calculator
Add or remove VAT for Germany, France, Italy, Spain and more.
Canada Income Tax Calculator
Your 2026 Canadian take home from two inputs.
US Income Tax Calculator
Your 2026 take home pay from three inputs.
UK Stamp Duty Calculator
What the taxman takes on your purchase, band by band.
Health
BMI Calculator
Your height, your weight, your BMI and healthy range in seconds.
ACA Subsidy Calculator
Your income and household size in, your 2027 premium tax credit estimate out.
Calorie Calculator
Your maintenance calories, then targets for every goal.
Ovulation Calculator
Your fertile window, ovulation day and next period from two inputs.
Sleep Calculator
Wake up at the end of a cycle, not in the middle of one.
Body Fat Calculator
Tape measure numbers in, body fat percentage and lean mass out.
Water Intake Calculator
A daily water target that fits your body, your day and your weather.
One Rep Max Calculator
One recent set, turned into your estimated max single.
Travel
Flight Tracker
A flight number in, its live position out.
Flight Duration Calculator
How long the flight takes, and what time you land.
Time Zone Converter
What time is it there, right now.
Jet Lag Planner
Shift your sleep before you fly, feel better when you land.
Trip Budget Calculator
Your whole trip's price tag, before you book a thing.
Packing List Generator
Answer 5 questions, get a list you won't forget half of.
Distance Calculator
How far apart are they, in km, miles, or a drive.
Fuel Cost Calculator
What the drive will cost you at the pump.
Math & Education
Percentage Calculator
Three common percentage questions, answered instantly.
GCF & LCM Calculator
The smallest number they all divide into, with steps.
GPA Calculator
Semester GPA, credit hours and cumulative GPA in one result.
Final Grade Calculator
Three numbers in, one exact final exam score out.
SAT Score Calculator
Raw answers in, your 400 to 1600 SAT score out.
LSAT Score Calculator
Correct answers in, your 120 to 180 LSAT score out.
Family & Pets
Due Date Calculator
Your due date, weeks along and trimester in one tap.
Chinese Gender Predictor
Boy or girl? Ask the 700-year-old chart, strictly just for fun.
Baby Cost Calculator
Every first year cost, itemized in seconds.
Dog Age Calculator
How old is your dog, really? Two inputs, one honest answer.
Baby Name Generator
Boy, girl and gender neutral names with meanings and origins.
Cat Age Calculator
Your cat's age in human years, plus the life stage.
Wedding Budget Calculator
One budget in, every category planned.
PDF Tools
Merge PDF
Two PDFs in, one PDF out, done right in your browser.
Split PDF
Pull any pages out of a PDF and save them as a new file.
Compress PDF
Shrink your PDF file size in seconds, free, private, no signup.
Images to PDF
Combine JPG, PNG, WebP or GIF images into one PDF, free, private, no signup.
PDF to Text
Extract text from any PDF instantly, free, private, no signup.
PDF to Image
Turn every PDF page into a crisp PNG image in seconds.
PDF Metadata
See the hidden details inside any PDF.
Text to PDF
Type or paste text and download it as a clean PDF, free, private, no signup.
Crop PDF
Trim white margins off every page in seconds.
Flatten PDF
Lock form fields and annotations into uneditable page content.
Grayscale PDF
Turn color PDFs black and white in seconds.
N up PDF
Fit 2 or 4 pages on every sheet and save paper.
Organize PDF
Reorder, move and delete PDF pages, right in your browser.
Add Page Numbers
Number every page in seconds, right in your browser.
PDF to Word
Turn any PDF into an editable Word document in seconds.
Protect PDF
Lock your PDF with a strong password in seconds.
Resize PDF
Put every page on the paper size you need.
Rotate PDF
Fix sideways or upside down pages in seconds.
Sign PDF
Draw your signature and stamp it onto any PDF page.
Unlock PDF
Remove the password from your own PDF in seconds.
Watermark PDF
Stamp any PDF with your own text watermark, right in your browser.
Image Tools
Background Remover
One click to a transparent PNG, full resolution, free, no signup.
Image Compressor
Shrink photos to an exact KB size, or by quality. Nothing is uploaded.
Image Resizer
Exact pixels, social presets and percentage scaling, in your browser.
HEIC to JPG Converter
Turn iPhone HEIC photos into JPGs that open everywhere. Batch, free.
Passport Photo Maker
Correct size ID photos at 300 DPI, with a printable sheet of copies.
DS-160 Photo Tool
A DS-160-ready US visa photo, exactly 600×600 px, under 240 KB, made privately in your browser.
Car & Auto
EV Charging Cost Calculator
Your electricity rate, turned into a monthly EV bill.
Car Depreciation Calculator
Watch your car's value fade, before it actually does.
Car Maintenance Cost Estimator
Budget every service before the shop quotes you.
Car Wrap Cost Calculator
Price your wrap before the shop does.
GAP Insurance Calculator
Find out if you're upside down, before the insurer does.
Cooking & Recipes
Utilities
Age Calculator
Your exact age in years, months and days, and your next birthday.
Word Counter
Live counts as you type: words, characters, sentences.
QR Code Generator
Free QR codes that never expire.
Random Number Generator
Truly random numbers, one click.
Password Generator
One click, one password built to survive.
Unit Converter
Metric to imperial and back, in one step.
Home & Garden
Pets
Aquarium Volume Calculator
Size your tank right, gallons, liters and water weight in one click.
Dog Chocolate Toxicity Calculator
Three inputs, one urgent answer, act on data, not panic.
Pet Insurance ROI Calculator
Yearly cost with vs without insurance, breakeven spend, and a clear verdict.
Dog Pregnancy Calculator
Breeding date in, whelping date out.
Fish Tank Stocking Calculator
The right number of fish, no guesswork, no overstocking.
Cat Pregnancy Calculator
When are the kittens due? Find out in seconds.
Work & Career
Meeting Cost Calculator
That “quick sync” has a price tag. See it.
Salary vs Hourly Calculator
Compare both offers with benefits, and see the true winner.
Contractor vs Employee Calculator
See what each path really keeps, and the rate that makes them equal.
Job Offer Comparison Calculator
Two offers, one honest scoreboard.
Shift Differential Pay Calculator
Night shifts pay extra, see exactly how much extra.
AI API Cost Calculator
Know your AI spend before the invoice arrives.
Browse by category
Mortgage & Housing
Home loans, refinancing, affordability and rent vs buy decisions, the real monthly numbers.
Home improvement
Work out materials and costs before you buy, fencing, roofing and decking.
Everyday money
Loans, salary, budgeting, tips and shared bills, the everyday money sums people run most often.
Tax
Add or remove US sales tax, Canadian GST/HST, Australian GST and UK VAT in one step.
Health
BMI, calorie, TDEE and BMR calculators, quick health numbers in metric or imperial units.
Travel
Live flight tracking, trip budgets, jet lag plans, packing lists and road trip math.
Math & Education
LCM, GCF, percentages, GPA and grade math, school sums and everyday calculations.
Family & Pets
Baby costs, pregnancy trackers, baby names and pet age calculators for the whole family.
PDF Tools
Merge, split, compress and convert PDFs in your browser. PDF to Word, JPG to PDF and more. Your files never leave your device.
Image Tools
Free image tools that run in your browser, remove backgrounds, compress to an exact KB size, resize to social presets, convert HEIC to JPG, make passport photos and prepare DS-160 US visa photos to the official spec. No upload, no signup.
New Tools
The newest FaridiaTech tools, fresh off the bench, every recent launch in one place: PDF converters, OCR, photo tools and the latest calculators.
Car & Auto
Free car and auto calculators and guides, compare car loans vs leasing, estimate monthly fuel costs, home EV charging prices, car depreciation, maintenance and ownership expenses.
Cooking & Recipes
Free cooking and recipe calculators and kitchen conversion charts, scale recipes, convert pans, plan portions and nail cooking times and temperatures.
Utilities
Everyday helpers: age, word count, unit conversion, QR codes, passwords and random numbers.
Home & Garden
Free home and garden calculators and guides, estimate paint, mulch, soil, gravel, concrete, tiles, fencing and lawn seed quantities before you buy.
Pets
Free pet calculators and tools, dog and cat age converters, chocolate toxicity checker, aquarium volume and stocking calculators, feeding costs and pregnancy due date predictors.
Work & Career
Free work and career calculators, freelance hourly rates, meeting costs, shift differentials, salary vs hourly and job offer comparisons, contractor vs employee tax math.
Questions people ask
Are these calculators really free?
Yes. All 154 calculators and tools are free, need no account and have no usage limit. The site is funded by advertising, which is why the tools themselves stay open.
Is my data stored or uploaded anywhere?
No. Every calculation runs entirely in your browser. Nothing you type is sent to our servers, stored, or shared.
Which countries and regions are supported?
They are built mobile first. Number fields open the numeric keypad, results stay on screen while you scroll, and the whole page loads in well under a second on a normal connection.
Do I need to create an account or sign up?
Building tools use feet and inches, the US convention that most roofing and fencing suppliers quote in. Money tools work on plain numbers, so pounds, euros and dollars all behave identically, only the symbol changes.
How accurate are the calculators?
The arithmetic is exact and every formula is published on the tool page so you can check it. Material counts still depend on real world site conditions, and tax rates change, so treat the output as a well informed estimate rather than a quote.

