45 free tools · No account
Nothing to install. Nothing uploaded. Nothing to cancel.
Calculators for money, tax and health that publish every formula. Image and PDF tools that run in this tab, so your files never leave your device. Marketing tools built to give the number that survives scrutiny. Text and developer tools that never see a server. No ads, no trial, no card, and no plan to add any.
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apps or extensions to install
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files uploaded to a server
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plans, trials or ads to cancel
100%
of formulas published
15 tools
Money, health and everyday arithmetic. Every one of these shows its formula and a worked example, so you can check the answer rather than trust it.
View all →- Age CalculatorYour exact age in years, months and days — plus how long until your next birthday.
- Date CalculatorDays and weekdays between two dates, or the date a number of days or working days away.
- Percentage CalculatorFive percentage calculations in one place, each explained in a sentence.
- Discount CalculatorThe sale price, what you save, and what two discounts really add up to — in any currency.
- Tip CalculatorA tip, a total, and a split that covers the bill to the cent — in any currency.
- Unit ConverterLength, weight, temperature, volume, area and speed, converted by exact definition — US and UK units kept apart.
- BMI CalculatorYour BMI against both WHO and Indian ICMR thresholds — they are not the same.
- GST CalculatorAdd GST to a price or strip it out of one, with the correct CGST/SGST or IGST split.
- EMI CalculatorYour monthly EMI, total interest, full schedule — and what a prepayment would save you.
- Mortgage CalculatorThe monthly payment, the interest over the term, and how the balance falls — including Canadian half-yearly compounding.
- SIP CalculatorWhat a monthly SIP could grow into — including step-up, lumpsum and goal-solving modes.
- Compound Interest CalculatorWhat a rate really earns over time, compounded yearly to daily, with monthly additions if you make them.
- Income Tax CalculatorTax under both regimes for AY 2026-27, with the working shown band by band.
- Salary CalculatorCTC to monthly take-home, from your actual salary components rather than a guessed split.
- FD & RD CalculatorDeposit maturity with the quarterly compounding Indian banks use — not the annual sort.
14 tools
Compress, resize and convert without uploading anything. These run entirely in your browser — open the network tab and check.
View all →- QR Code GeneratorQR codes for links, UPI payments, WiFi and contact cards — PNG or vector SVG.
- Image CompressorCompress images to a target size in your browser. Your files are never uploaded.
- PDF CompressorShrink a PDF in your browser, with an honest report when it is already well optimised.
- PDF MergeCombine PDFs in the order you choose — in your browser, never uploaded.
- PDF SplitExtract the pages you want, or burst a PDF into one file per page — never uploaded.
- Image to PDFPhotos into a single PDF, in the order you choose — built here, never uploaded.
- PDF to JPGPDF pages as JPG or PNG at the resolution you choose — rendered here, never uploaded.
- PDF to PNGPDF pages as lossless PNG images, sharp enough for text and diagrams — never uploaded.
- Image ConverterJPG, PNG and WebP in any direction — the real format read from the file, never uploaded.
- PNG to JPGPNG to JPG in batches, with a say over what fills the transparent parts — never uploaded.
- JPG to PNGJPG to PNG in batches, with the honest part up front: the file gets bigger, not better.
- WebP to JPGWebP to JPG for the apps and forms that still refuse WebP — never uploaded.
- WebP to PNGWebP to PNG with transparency kept, for editors and tools that will not take WebP.
- Image ResizerResize to exact pixels or a ready preset, including the Indian passport photo size.
9 tools
For people who have to justify a budget. Built to give the number that survives scrutiny, not the flattering one.
View all →- SEO CheckerTwenty on-page checks for any URL, with a plain-English fix for each one.
- SEO AuditA crawl-based audit with Core Web Vitals, broken links and prioritised fixes.
- ROAS CalculatorYour ROAS, and the break-even ROAS your margin actually demands.
- Google Ads ROI CalculatorTrue ad ROI once COGS and management fees are counted, not just spend against revenue.
- Conversion Rate CalculatorConversion rate, required traffic, lift — and whether your A/B result is real.
- Marketing ROI CalculatorSpend to profit across the whole funnel — CPL, CAC, LTV, ROMI and payback.
- Margin CalculatorMargin, markup and break-even — and why pricing by markup quietly costs you money.
- A/B Test Sample SizeHow much traffic a test needs before its result means anything — power included.
- UTM BuilderBuild UTM links that will not break your GA4 reporting — with validation, not just concatenation.
7 tools
For working with text and data. Everything runs in this tab, so what you paste in is never sent anywhere.
View all →- Word CounterWords, characters, sentences and reading time as you type — counted in your browser.
- Case ConverterSentence, title, upper and lower case, and the code styles — with the title-case rule stated.
- JSON FormatterFormat, minify and validate JSON — errors pinned to line and column, and big numbers never rounded.
- Base64 Encode and DecodeText to Base64 and back, as UTF-8, with the URL-safe alphabet — errors explained, nothing uploaded.
- Hash GeneratorMD5 and SHA checksums of text or a file, and a match check against the published one — nothing uploaded.
- UUID GeneratorRandom v4 or sortable v7 UUIDs in bulk, and a checker that reads any UUID's version and timestamp.
- Password GeneratorRandom passwords or word passphrases, made in your browser, with their exact strength in bits.