Free tools busy people open every day.
Answer: KDF Tech publishes free no-signup browser tools for the highest daily searches in the USA and UK — including word counter, BMI, mortgage, sales tax, tip, salary conversion, discounts, age, QR codes, and password generators — then connects serious buyers to custom software work.
Each tool page has clear answers, HowTo steps, FAQ schema, and internal links so Google and AI answer engines can crawl, cite, and rank faster.
Most used daily
Count words, characters, sentences, and reading time instantly.
Open tool →BMI CalculatorBody Mass Index for US (lb/in) and metric — with category.
Open tool →Mortgage CalculatorUS home loan monthly payment — principal, interest, taxes & insurance.
Open tool →Age CalculatorExact age in years, months, and days from your date of birth.
Open tool →Sales Tax CalculatorAdd or remove US sales tax from a price in seconds.
Open tool →Hourly to Salary CalculatorConvert hourly wage ↔ annual salary (US work year).
Open tool →Tip CalculatorSplit bills and tip like in the USA & UK — per person totals.
Open tool →Percentage CalculatorWhat is X% of Y, percentage change, and reverse percent — fast.
Open tool →Discount CalculatorSale price, % off, and how much you save.
Open tool →Date Difference CalculatorDays between two dates — weeks, months, and years.
Open tool →QR Code GeneratorCreate downloadable QR codes for URLs, Wi-Fi, and text — free, no signup.
Open tool →Password GeneratorStrong random passwords with length and character controls.
Open tool →Text Case ConverterUPPER, lower, Title Case, Sentence case — one click.
Open tool →Compound Interest CalculatorGrowth of savings or investments with compounding.
Open tool →More utilities
Monthly payment, total interest, and loan cost in seconds.
Open tool →Unit ConverterLength, weight, and temperature — metric ↔ imperial for US & UK.
Open tool →SEO + AEO + GEO — how we structure these pages
- SEO: unique titles, meta descriptions, canonicals, sitemap, breadcrumbs, fast static HTML.
- AEO: direct “Answer:” blocks and FAQ for featured snippets / AI Overviews.
- GEO: llms.txt, clear entity facts, and cite-ready definitions for ChatGPT, Perplexity, and Claude.
Learn who we are on the About page — important for E-E-A-T and AI citations.
FAQ
What free tools does KDF Tech offer?
KDF Tech offers free browser tools including word counter, BMI calculator, US mortgage calculator, sales tax calculator, tip calculator, percentage and discount calculators, age and date difference calculators, hourly-to-salary converter, compound interest calculator, QR code generator, password generator, text case converter, unit converter, and loan EMI calculator.
Are KDF Tech tools free for USA users?
Yes. All tools at tech.kdfmarts.com/tools/ are free, require no signup, and run in the browser for users in the USA, UK, and worldwide.
Does KDF Tech build custom software as well?
KDF Tech is a software development company that builds Flutter mobile apps, Shopify storefronts, POS/ERP systems, and 6Valley/6amMart customizations for clients in the USA, UK, Pakistan, and worldwide. We also publish free daily online tools at tech.kdfmarts.com/tools/.
Do these tools store my data?
No. Calculations and generators run locally in your browser. KDF Tech does not upload your tool inputs to our servers for these utilities.