Free tools
Free online tools and calculators
Check a website, work out a number, or compare your options. Useful tools, clear explanations and no sign-up.
Browse the tools below. If search and filters don’t appear, enable JavaScript and reload this page.
Search by task, such as loan, savings, resize image, QR code, salary, password or dice.
Take-home pay calculator
What will one job pay you? Convert an Australian salary or hourly rate into take-home pay, with tax, Medicare, super and optional HELP.
Open tool →Compare job offers
Choosing between jobs or getting a raise? Compare two alternative salaries after Australian tax, HELP and commuting costs.
Open tool →Second-job take-home pay
Keeping both jobs? Calculate how much a second job adds after Australian tax and HELP, and check combined withholding.
Open tool →Australian GST calculator
Add or remove GST on one amount, or calculate multiple items with quantities, discounts and mixed GST treatments. Save a printable breakdown.
Open tool →Profit margin and markup
Calculate gross profit margin and markup from cost and selling price. Find a price for your target margin, compare the figures and save a free PDF report.
Open tool →Break-even and sales targets
Find break-even sales in whole units and revenue, calculate a target-profit sales volume, and check profit at your forecast sales. Free printable breakdown.
Open tool →Freelance hourly rate planner
Plan a freelance hourly and day rate from annual income, overheads, working weeks and billable hours. Include a business profit reserve and save a report.
Open tool →Website health checker
Check response time, internal links, search metadata and mobile settings on a public page.
Open tool →UTM campaign link builder
Build a campaign URL with UTM source, medium and campaign tags. Preserve existing query parameters and fragments, copy the encoded link or save a report.
Open tool →QR Code Generator
Create a free static QR code for a website URL or plain text. Preview and download PNG or SVG locally, with no account, expiry or tracking redirect.
Open tool →Concrete volume and bags
Estimate concrete for rectangular slabs or solid cylinders. Add a waste allowance, calculate cubic metres and litres, and convert volume to whole bags.
Open tool →Paint quantity and tins
Calculate paint for room walls and an optional ceiling. Deduct openings, choose coats and product coverage, and estimate litres, whole tins and spare paint.
Open tool →Flooring packs and cost
Estimate flooring area, waste allowance, whole packs and material cost. Enter your pack coverage and price to see purchase quantity and spare coverage.
Open tool →Volumetric shipping weight
Compare actual and volumetric parcel weight using your carrier divisor. Apply a weight rounding increment and total identical parcels with a printable report.
Open tool →Inventory reorder planner
Calculate a reorder point from daily demand, lead time and safety stock. Check inventory position and an order quantity rounded to your supplier pack size.
Open tool →Manufacturing OEE calculator
Calculate overall equipment effectiveness with availability, performance and quality. Check production inputs and see downtime, speed and quality losses.
Open tool →Print size and resolution
Check effective print resolution from image pixels and print dimensions. Find required pixels, maximum size at your target PPI and the crop needed to fill.
Open tool →Image Resizer & Compressor
Resize JPEG, PNG and WebP images privately in your browser. Keep proportions, adjust export quality, compare file sizes and download without uploading.
Open tool →Dice roller
Roll d4, d6, d8, d10, d12, d20, d100 or custom dice. Mix dice types, hold individual dice, add a modifier and keep a local roll history for your game.
Open tool →Coin flipper
Flip one coin or up to 100 coins at once. See heads and tails in order, count each outcome and copy or print the result. Free, fast and no sign-up.
Open tool →Random number generator
Generate random integers within an inclusive range, with optional unique numbers and sorted results. Supports negative values and up to 100 numbers per draw.
Open tool →Random name picker
Pick one or several names from a list, with no duplicates per draw and optional removal between draws. Keep your list private and copy or print results.
Open tool →Teams and turn order
Split a list into random balanced teams or shuffle a complete turn order. Every participant appears once, with clear group lists ready to copy or print.
Open tool →Area Calculator
Calculate rectangle, circle, triangle and trapezoid areas in metric or imperial units. Compare square metres, square feet, hectares and acres, then save the result.
Open tool →Ratio Calculator
Simplify a two-part ratio, scale it to a new first value and see each part as a percentage of the whole. Supports positive decimals with clear worked examples.
Open tool →GCF and LCM Calculator
Find the greatest common factor and least common multiple of two or more whole numbers. Get exact integer results and a reduced ratio, with no sign-up.
Open tool →Unit Converter
Convert length, mass, temperature, area, volume, speed and storage units. Swap direction, compare units and distinguish US, Imperial, decimal and binary measures.
Open tool →Percentage Calculator
Find a percentage of a number, percentage change, or an amount after an increase or discount. Clear formulas, examples and private printable results.
Open tool →Fraction Calculator
Add, subtract, multiply or divide fractions and mixed numbers. Get an exact simplified fraction, mixed number, decimal estimate and the calculation steps.
Open tool →Average Calculator
Find the mean, median, mode, range, sum and count of a number list. Paste numbers from a spreadsheet, compare clear statistics and copy or print the results.
Open tool →Scientific Calculator
Calculate expressions with powers, roots, trigonometry, logarithms and factorials. Use a touch-friendly keypad, choose degrees or radians, and copy or print results.
Open tool →Standard Deviation Calculator
Calculate sample and population standard deviation, variance and mean. Paste a list, compare both conventions and see the calculation with private printable results.
Open tool →Quadratic Formula Calculator
Solve ax² + bx + c = 0 with real or complex roots. See the discriminant, vertex, symmetry axis and method, including linear equations when a is zero.
Open tool →Word & Character Counter
Count words, characters, lines, paragraphs and UTF-8 bytes locally. See reading and speaking estimates, undo a clear, and export counts without your pasted text.
Open tool →Online Timer & Stopwatch
Run a countdown or stopwatch with pause, resume and lap splits. Choose an optional finish sound, use quick presets, and copy or print a paused timing record.
Open tool →Date Calculator
Count days between dates or add and subtract days and weeks. Includes leap years, optional end-date inclusion and weekday counts with clear calendar rules.
Open tool →Time Calculator
Calculate time between clock times, subtract breaks, add or subtract durations, or convert decimal hours. Get hours, minutes, seconds and a copyable result.
Open tool →Age Calculator
Calculate age in years, months and days on any selected date. See total days lived and the next birthday, with explicit leap-day and month-end handling.
Open tool →Compound Interest Calculator
Calculate monthly compound interest with regular contributions. See your projected balance, total deposits and interest, then download a monthly savings schedule.
Open tool →Loan Calculator
Estimate monthly loan repayments and total interest. Compare extra repayments, see payoff time and interest saved, and download a full amortisation schedule.
Open tool →Savings Goal Calculator
Find the monthly contribution needed to reach a savings goal. Include an existing balance and interest, choose deposit timing, and download a monthly plan.
Open tool →