PaintProCalc is a free online paint calculator that helps painters, contractors, and homeowners estimate the exact number of litres or gallons of paint needed for any room, wall, or surface — instantly and accurately. Simply enter your wall dimensions, number of coats, and surface type, and the calculator returns the precise paint quantity, material cost, labour cost, and profit margin in seconds. No guessing, no spreadsheets, no waste.
Beyond paint quantity, PaintProCalc is a complete business platform for painting professionals. Generate professional-looking PDF quotes and invoices your clients trust, manage all your painting projects in one organised dashboard, track client contacts, and monitor real profit margins vs your quoted price. Whether you run a solo painting business or a multi-crew contracting firm, PaintProCalc saves you hours every week and helps you win more jobs with accurate, professional estimates.
PaintProCalc works entirely in your browser — no installation required. It also supports offline use when installed as a Progressive Web App (PWA) on any iOS or Android device, so you can calculate on site without an internet connection. Trusted by thousands of painters and contractors worldwide. Start free today — no credit card required.
Our paint calculator is the fastest and most accurate way to find out how much paint you need for any painting project. Enter your wall length in metres, wall height, the number of coats you plan to apply, and select your surface type — the calculator instantly tells you the total wall area in m², the exact litres of paint required, and the estimated material cost if you enter your paint price per litre.
Supported surface types include drywall, plasterboard, painted walls, brick and masonry, timber, metal, and raw concrete — each with pre-set industry-standard coverage rates that you can override if needed. Add a wastage buffer of 10% or 15% to account for surface imperfections or touch-ups. Advanced options let you factor in hourly labour rates or labour cost per square metre, plus a profit markup percentage to arrive at your final client quote in one step.
Once your results are calculated, you can export a branded PDF report, save the project to your dashboard, or create a reusable template for similar future jobs.
Calculate the number of tiles needed to cover any floor or wall area. Enter the room dimensions and your tile size, and the calculator returns the exact tile count plus recommended waste allowance. Supports all tile formats including square, rectangular, and mosaic.
Estimate flooring material quantities for timber, laminate, vinyl plank, carpet, and engineered wood. Enter room length and width to get the total m² needed, including a standard wastage factor for offcuts.
Calculate concrete volume in cubic metres for slabs, footings, columns, and steps. Enter your dimensions and instantly find out how many bags of premix or cubic metres of ready-mix concrete you need for your project.
Convert between metric and imperial measurements for length, area, volume, and weight. Instantly switch between metres and feet, litres and gallons, kilograms and pounds, and more.
The Free plan gives you access to the core paint calculator, tile calculator, flooring calculator, concrete calculator, and unit converter with no account required and no time limit. Perfect for homeowners and occasional users who need fast, accurate material estimates without any commitment.
The Pro plan is built for professional painters, contractors, and painting business owners who need more than just a basic calculator. Pro unlocks the full business suite of tools that replaces spreadsheets, Word documents, and separate invoicing apps — saving you hours every week and helping you look more professional to clients.
Every new account includes a 7-day free Pro trial with full access to all features. No credit card required to start. Cancel anytime from your billing portal — no lock-in.
Painty is PaintProCalc's built-in AI painting assistant, available exclusively to Pro subscribers. Ask Painty any painting-related question and receive an instant, professional answer tailored to your specific job. Whether you need coverage rate advice for a particular surface, a cost estimate for a large exterior repaint, recommendations on which paint finish to use for a bathroom, or tips on surface preparation for peeling walls — Painty has the expertise to help.
Painty can also walk you step-by-step through a full job cost calculation: enter your room dimensions in the chat, and Painty will calculate litres needed, estimate material costs, suggest a labour rate, and produce a total price you can quote to your client — all conversationally, without needing to fill in a form.
Traditional estimating methods — Excel spreadsheets, handwritten notes, rough mental calculations — are slow, error-prone, and unprofessional. Paint Pro Calc replaces all of them with a single, fast, browser-based platform that handles everything from the first site measurement to the final invoice.
The amount of paint needed depends on your wall area (length × height), number of coats, and the paint's coverage rate (typically 10–14 m² per litre for smooth surfaces, 7–8 m² per litre for brick or masonry). Use our free paint calculator to get an exact figure in seconds — just enter your dimensions and surface type.
Our calculations are based on standard industry coverage rates for each surface type and are highly accurate when you provide precise wall dimensions. We recommend adding a 10% wastage buffer for most jobs to account for surface imperfections, touch-ups, and brush losses. You can also enter a custom coverage rate from your specific paint brand's data sheet.
Yes — it's designed for professional painters and contractors. The Pro plan includes a complete quote and invoice generator with PDF export. You can add your business logo, client details, itemised costs, and terms. Quotes look professional and help you win more jobs.
The calculator supports both metric (metres, m², litres) and imperial (feet, ft², gallons) units. Use the Unit Converter tool to switch between measurement systems as needed.
Yes. All new accounts receive a full 7-day free trial of the Pro plan with access to every feature — no credit card required. After the trial you can upgrade to Pro or continue using the free tools indefinitely.
Yes. When installed as a Progressive Web App (PWA) on your iPhone, iPad, or Android device, Paint Pro Calc works offline — ideal for on-site calculations without internet access.
Yes. Pro users can generate a shareable link for any project, invite contractors by email to view job details and submit price estimates, and export PDFs for clients.
Our blog and resource library covers everything painters and homeowners need to know — from choosing the right paint finish for different rooms to understanding coverage rates, calculating litres for large exterior repaints, and setting competitive prices for painting jobs.