All tools
105 free tools across 8 categories. Filter below or press / to search.
105 tools
Financial Calculators
- US
US Mortgage Payment Calculator
Estimate your monthly PITI payment, amortization schedule, payoff date and savings from extra payments.
- US
US Mortgage Affordability Calculator
Estimate the home price your income supports using front-end and back-end debt-to-income ratios you set.
- US
Extra Mortgage Payment Calculator
See how extra monthly, yearly or one-time principal payments shorten your US mortgage and cut interest.
- US
Mortgage Refinance Calculator
Compare your current loan with a refinance: new payment, monthly savings, break-even month and lifetime cost.
- US
Rent vs Buy Calculator
Compare the long-term net worth of buying a home versus renting and investing the difference.
- AU
Home Loan Repayment Calculator (Australia)
Work out monthly, fortnightly or weekly home loan repayments in AUD, with interest-only periods and extra repayments.
- AU
Mortgage Offset Calculator
See how much interest and time a 100% offset account saves on your Australian home loan, modelled day by day.
- AU
Home Loan Extra Repayment Calculator
See how extra fortnightly, weekly or monthly repayments and a lump sum cut interest and time off an Australian home loan.
- AU
Stamp Duty Calculator (Australia)
Estimate transfer (stamp) duty in every Australian state and territory, with first home buyer and foreign purchaser rules.
- AU
Borrowing Capacity Calculator (Australia)
An illustrative serviceability scenario: estimate how much you might borrow from your income, expenses and a rate buffer.
Personal Loan Calculator
Monthly payment, total interest, APR with origination fees and a full amortization schedule for any personal loan.
Car Loan Calculator
Car payment with down payment, trade-in, your sales tax rate and dealer fees, plus total interest and schedule.
Loan Comparison Calculator
Compare 2 to 4 loans side by side: payment, total interest, fees, total cost and an APR estimate that includes fees.
Debt Consolidation Calculator
Compare paying your current debts as you do now with a consolidation loan: payment, payoff time and total interest.
Compound Interest Calculator
Grow a starting amount and regular contributions with daily, monthly, quarterly or annual compounding, with inflation adjustment.
Savings Goal Calculator
Find the monthly amount needed to reach a savings target by a deadline, or how long your current deposits will take.
Credit Card Payoff Calculator
See how long minimum payments take versus a fixed payment or target payoff date, and how much interest you save.
Profit Margin Calculator
Gross, operating and net profit margins from revenue and costs, with a clear breakdown and the formulas.
Markup Calculator
Convert between cost, selling price, markup and margin in any direction, with a markup to margin table.
Break-Even Calculator
Units and revenue needed to cover fixed costs, with an optional target profit and a revenue vs cost chart.
Business Loan Calculator
Monthly, fortnightly, weekly or daily business loan repayments with fees, total cost and an APR estimate.
Freelancer Hourly Rate Calculator
Work out the hourly and day rate you need from your target income, expenses, tax rate and real billable hours.
Sales Commission Calculator
Flat, tiered (marginal) and base plus commission pay plans, with a tier-by-tier breakdown and effective rate.
Percentage Calculator
Percent of a number, what percent one number is of another, percentage change, increase, decrease and reverse percentages.
Age Calculator
Exact age in years, months and days, total days and weeks, and a countdown to the next birthday.
Date Difference Calculator
Days, weeks, months and years between two dates, business days excluding weekends and holidays, and date adding.
AI Writing Tools
- AI
AI Email Writer
Describe what you need to say and get a clear, ready-to-edit email with subject line options.
- AI
AI Email Reply Generator
Paste an email, choose how you want to respond, and get a reply that addresses each point.
- AI
AI Paraphrasing Tool
Rewrite text in a new style (fluent, formal, simple, concise) while keeping the meaning and facts.
- AI
AI Text Humanizer
Make stiff or robotic text read more naturally, with varied sentences and plain language.
- AI
AI Grammar and Tone Assistant
Fix grammar and spelling in US, UK, Australian or Canadian English, and optionally shift the tone.
- AI
AI Blog Outline Generator
Turn a topic and keyword into a structured outline with headings, notes, FAQs and a meta description.
- AI
AI Social Media Caption Generator
Write several caption options for Instagram, LinkedIn, Facebook, X, TikTok and more.
- AI
AI Hashtag Generator
Get grouped, relevant hashtags (broad, niche, specific, local) ready to copy.
- AI
AI Product Description Generator
Turn product features into benefit-led copy with bullets and a meta description.
- AI
AI FAQ Generator
Generate FAQ questions and answers from your page content or product description.
- AI
AI Prompt Generator
Turn a rough goal into a structured, reusable prompt for any AI assistant.
- AI
AI Business Name Generator
Brainstorm business names in the style you want, grouped by theme with a short rationale.
- AI
AI YouTube Title Generator
Get accurate, clickable YouTube title options under 70 characters, plus thumbnail text ideas.
- AI
AI Meeting Notes Summarizer
Turn raw notes or a transcript into a summary, decisions, action items and open questions.
- AI
AI Content Repurposing Tool
Turn one article or transcript into LinkedIn posts, X threads, newsletter sections and scripts.
SEO Tools
Website SEO Audit
Fetch any page and see its status, redirects, title, meta tags, canonical, headings, links, schema and robots.txt rules.
Meta Title Generator
Generate 8 to 12 SEO title ideas from your keyword, brand and location, with character counts and pixel width estimates.
Meta Description Generator
Turn a page summary, benefits and call to action into meta description options with length and pixel estimates.
SERP Preview Tool
Preview how your title, URL and meta description may look in desktop and mobile search results, with pixel-based truncation.
Robots.txt Generator
Build a robots.txt with presets, validate it with an RFC 9309 parser and test any URL path before you publish.
XML Sitemap Generator
Paste or upload a URL list and get a valid XML sitemap, split into several files with an index when needed.
Schema Markup Generator
Fill in a form to generate JSON-LD for Organization, LocalBusiness, Article, Product, FAQ, Breadcrumb, Event and more.
Structured Data Validator
Check JSON-LD from a URL or pasted code for syntax errors, missing required properties and common schema.org mistakes.
Redirect Checker
Trace every hop of a redirect chain with status codes, Location headers and timings, and spot loops and temporary redirects.
Broken Link Checker
Check up to 100 links on a page for 404s, server errors, timeouts and redirects, then export the results as CSV.
Website Speed Checker
Run Google PageSpeed Insights for a URL and see Lighthouse lab metrics plus real-user Core Web Vitals when available.
Keyword Density Checker
Count words, top one, two and three-word phrases, keyword density and readability for any text or HTML.
AI Crawler Access Checker
See whether GPTBot, ClaudeBot, PerplexityBot, Google-Extended and other AI crawlers may access a URL under your robots.txt.
AEO Content Readiness Checker
Check a page or draft for answer-friendly structure: question headings, concise answers, lists, schema, authorship and dates.
Marketing Tools
UTM Link Builder
Build GA4-ready UTM campaign links with validation, bulk variations, saved presets and one-click copy.
ROAS Calculator
Return on ad spend as a ratio and percentage, plus break-even and target ROAS from your gross margin.
Advertising ROI Calculator
Campaign ROI on gross profit after product and campaign costs, shown next to the revenue-based ROI that overstates returns.
Customer Acquisition Cost Calculator
Blended CAC from itemised sales and marketing costs, plus the months of gross margin needed to pay it back.
Customer Lifetime Value Calculator
Simple and discounted CLV from order value, purchase frequency, margin and lifespan or churn, with CLV to CAC ratio.
PDF Tools
Merge PDF
Combine several PDFs into one file in the order you choose, with optional page ranges for each file.
Split PDF
Split a PDF into single pages, fixed-size chunks or custom ranges, or extract selected pages.
Compress PDF
Reduce PDF size with a lossless structure clean-up or by lowering image quality, with honest before and after sizes.
PDF to JPG
Convert PDF pages to JPG images at the resolution and quality you choose, then download one by one or as a ZIP.
JPG to PDF
Turn JPG, PNG and WebP images into a single PDF with A4, Letter or fit-to-image pages, margins and your own order.
Reorder PDF Pages
Rearrange and delete PDF pages on a thumbnail grid with drag, touch or buttons, then save a new PDF.
Rotate PDF
Rotate all or selected PDF pages by 90, 180 or 270 degrees with live thumbnail previews, then save.
Watermark PDF
Add a text or image watermark to PDF pages with your font size, opacity, angle, colour and placement.
Image Tools
Image Compressor
Compress JPG, PNG and WebP images with a quality slider and optional downscaling, with before and after sizes.
Image Resizer
Resize images by pixels or percentage with a locked aspect ratio, high quality downscaling and batch export.
Image Cropper
Crop images with a draggable box, aspect ratio presets, exact pixel inputs, rotation and flipping.
JPG to PNG Converter
Convert JPG photos to lossless PNG files in a batch, with sizes shown for every file.
PNG to WebP Converter
Convert PNG images to smaller WebP files with a quality slider, keeping transparency, in a batch.
Remove Image Metadata
See the EXIF, GPS and other metadata in your photos, then remove it losslessly from JPEG and PNG files.
Social Media Image Resizer
Resize images to common social media sizes for Instagram, Facebook, X, LinkedIn, YouTube, Pinterest and TikTok.
Developer Tools
JSON Formatter
Pretty-print or minify JSON with 2 spaces, 4 spaces or tabs, sort keys, and see exact error positions.
JSON Validator
Validate JSON against RFC 8259 with precise error positions, duplicate-key detection and structure stats.
HTML Formatter
Beautify and re-indent HTML with control over indent size, line wrapping, attributes and blank lines.
CSS Minifier and Beautifier
Minify CSS with CSSO (optional restructuring) and see the size saved, or beautify minified CSS back to readable code.
JavaScript Minifier
Minify JavaScript with Terser in your browser, with mangle, compress and keep-names options and exact error positions.
Base64 Encoder and Decoder
Encode and decode Base64 with correct UTF-8 handling, URL-safe output, and file to data URI conversion.
URL Encoder and Decoder
Percent-encode or decode text for URLs in component or full-URL mode, and break a URL into its parts and query parameters.
UUID Generator (v4 and v7)
Generate random v4 or time-ordered v7 UUIDs in bulk with formatting options, and validate or inspect any UUID.
QR Code Generator
Create QR codes for URLs, text, Wi-Fi, email, phone and contact cards, with colours, error correction and PNG or SVG download.
Password Generator
Generate strong random passwords or word passphrases with unbiased cryptographic randomness and an entropy estimate.
Color Palette Generator
Build complementary, analogous, triadic, tetradic and monochrome palettes from one colour, with contrast checks and CSS export.
HEX to RGB Converter and Contrast Checker
Convert colours between HEX, RGB(A), HSL and OKLCH with a live preview, and check WCAG contrast between two colours.
CSS Gradient Generator
Design linear, radial and conic CSS gradients with draggable colour stops, presets and ready-to-copy CSS.
Open Graph Preview and Checker
Check a page's Open Graph and Twitter card tags, preview generic social cards and list missing or broken tags.
Email Signature Generator
Build a professional HTML email signature with a live preview, then copy it into Gmail, Outlook or Apple Mail.
Business Tools
Missed Call Revenue Calculator
Estimate the revenue and gross profit you may lose each month and year from unanswered calls, using your own booking rates.
Appointment No-Show Cost Calculator
See what missed appointments cost per year and how much reminders or rebooking could recover, using your own no-show rate.
Lead Conversion Funnel Calculator
Model your sales funnel stage by stage, see where leads drop off, and test what a better conversion rate at one stage is worth.
CRM ROI Calculator
Estimate the return on a CRM from extra deals and admin time saved against the subscription, setup and training costs you enter.
Roofing Material Calculator
Turn roof footprint and pitch into sloped area, squares, shingle bundles, underlayment rolls, starter and ridge cap, in feet or metres.
Roof Replacement Cost Estimator
Build an itemised, illustrative roof replacement budget from your own material, labour, tear-off, disposal, permit and contingency figures.
Paint Coverage Calculator
Work out how much paint you need for walls and ceilings, minus doors and windows, rounded to the container sizes you can buy.
Flooring Calculator
Calculate floor area for multiple rooms including L-shapes, boxes needed with pattern waste, cost, underlayment rolls and trim length.
Renovation Budget Calculator
Plan a renovation budget with editable line items by category, contingency, tax, paid and remaining tracking, and CSV import and export.
Ceramic Coating Cost and Price Estimator
For detailers: price ceramic coating jobs by vehicle size from your product cost, prep and coating hours, labour, overhead and target margin.
Car Detailing Profit Calculator
Model a detailing business: services menu, weekly job mix, labour, products, travel and overhead to find monthly profit and break-even jobs.
PPF Coverage and Price Estimator
Estimate paint protection film area, roll length, material cost and a suggested price for partial front, full front, track and full vehicle packages.
Rental Yield Calculator
Calculate gross and net rental yield from price, weekly or monthly rent, vacancy and itemised expenses, plus cash-on-cash with a loan.
Rental Property Cash Flow Calculator
Project rental property cash flow for 10 years with your loan, rent, vacancy, expenses and growth rates, plus cap rate, cash-on-cash and DSCR.
Service Pricing Calculator
Price a service job from labour, materials and allocated overhead using a target margin or markup, with three package tiers compared.