All Free Art & Drawing Calculators
Browse all 115 free calculators across 16 categories. Every tool is fast, accurate and requires no signup.
Calculators for paint coverage, colour mixing, dilution ratios, palettes and paint costs.
Paint Coverage Calculator
Calculate how much artist paint you need for any canvas or surface area based on paint type, thickness and number of coats. Free online calculator.
Colour Mixing Calculator
Work out pigment ratios to mix a target colour from primary colours by volume or weight. Covers acrylics, oils and watercolours.
Paint Dilution Calculator
Calculate the correct dilution ratio of paint to thinner or medium for your painting technique. Covers acrylics, oils and watercolours.
Palette Calculator
Plan how much of each paint colour to squeeze onto your palette for a painting session. Avoid waste and never run out mid-painting.
Colour Wheel Calculator
Find harmonious colour combinations using colour wheel theory including complementary, triadic, analogous and split schemes for artists.
Complementary Colour Calculator
Find complementary, split-complementary and triadic colours for any hue. Build stronger art compositions with colour theory principles.
Paint Volume Calculator
Calculate the volume of artist paint needed based on canvas or surface area, number of coats and paint type. Free online calculator.
Acrylic Medium Calculator
Work out how much gel medium, retarder or flow improver to add to your acrylic paint. Get the correct mixing ratios for any technique.
Oil Medium Calculator
Calculate linseed oil, turpentine and varnish ratios for oil painting mediums. Covers fat-over-lean rules and common medium recipes.
Paint Cost Calculator
Estimate the total cost of artist paint needed for your project based on coverage area, number of coats and price per tube or tin.
Paint Opacity Calculator
Calculate number of coats needed, paint volume and drying time based on pigment opacity type, surface area and desired coverage level.
Colour Temperature Calculator
Calculate warm/cool bias of colour mixes and suggest complementary temperature adjustments.
Paint Drying Time Calculator
Calculate paint drying and curing times based on paint type, coat thickness, temperature and humidity.
Palette Knife Coverage Calculator
Calculate impasto paint volume needed for heavy-textured palette knife painting.
Paint-Medium Ratio Calculator
Calculate medium-to-paint ratios for glazing, impasto, pouring and other painting techniques.
Glaze Layer Calculator
Calculate cumulative opacity, light transmittance and optical depth for transparent glaze layers in oil, acrylic, watercolour and gouache painting.
Calculators for canvas sizing, stretcher bars, gesso coverage, panel dimensions and surface preparation.
Canvas Size Calculator
Calculate canvas dimensions including wrap-around allowance for gallery wrap and stapling edges. Free online calculator, no signup required.
Stretcher Bar Calculator
Work out stretcher bar lengths, cross braces and corner keys needed for your canvas. Includes brace spacing for large canvases.
Canvas Area Calculator
Calculate the total area of canvas fabric needed including overlap for stapling. Works for single canvases or cutting multiples.
Gesso Coverage Calculator
Calculate how much gesso primer you need for your canvas or wood panel based on surface area, absorbency and number of coats applied.
Panel Size Calculator
Work out wood panel dimensions and cradling requirements for rigid painting surfaces. Covers MDF, birch plywood and hardboard panels.
Canvas Cost Calculator
Estimate the total material cost of canvas fabric, stretcher bars, gesso and staples for building your own stretched canvases.
Aspect Ratio Calculator
Calculate equivalent canvas dimensions when scaling artwork up or down. Detects the golden ratio and common art proportions automatically.
Canvas Weight Calculator
Estimate the weight of a stretched canvas including stretcher bars, fabric and paint layers. Useful for shipping and hanging.
Canvas Roll Calculator
Calculate how many canvases can be cut from a roll of canvas given standard and custom sizes.
Calculators for pencil grades, paper sizes, grids, perspective, scaling and drawing materials.
Pencil Grade Calculator
Find the right pencil grade range for your drawing style and subject matter. Covers graphite, charcoal and coloured pencil ranges.
Paper Size Calculator
Convert between A-series, imperial and custom paper sizes with area calculations. Includes weight and sheet count estimation.
Proportion Grid Calculator
Calculate grid dimensions for accurately scaling a reference photo or image onto your drawing surface. Free online grid calculator for artists.
Perspective Calculator
Calculate vanishing point positions and horizon line placement for one, two and three-point perspective drawings. Free calculator.
Drawing Scale Calculator
Convert real-world measurements to drawing scale and vice versa. Useful for architectural sketches and technical illustration.
Charcoal Calculator
Estimate charcoal sticks, pencils and fixative spray needed for a drawing project based on surface area and coverage density.
Pastel Calculator
Calculate the number of soft pastel or oil pastel sticks and sanded paper needed for your artwork based on size and colour complexity.
Sketchbook Calculator
Work out how many sketchbook pages you need and estimate usage over time based on your drawing frequency, habits and media type.
Perspective Grid Calculator
Calculate vanishing point positions and grid spacing for 1, 2 or 3 point perspective drawings.
Calculators for frame sizes, mat boards, glass, moulding lengths, hanging hardware and frame costs.
Frame Size Calculator
Calculate outer frame dimensions based on artwork size and moulding width. Includes rebate allowance and overall measurements.
Mat Board Calculator
Work out mat board dimensions and opening size with correct border widths. Includes weighted bottom border for professional results.
Glass Size Calculator
Calculate the glass or acrylic glazing size needed for your picture frame. Covers standard glass, non-reflective and UV-filtering.
Frame Moulding Calculator
Calculate the total length of frame moulding needed including mitre joint waste allowance. Free online calculator for framers.
Backing Board Calculator
Work out backing board dimensions and material needed for your picture frame. Covers MDF, foam core, corrugated board and acid-free options.
Mount Opening Calculator
Calculate mount opening dimensions with weighted bottom border and artwork overlap allowance for professional picture framing results.
Frame Cost Calculator
Estimate the total cost of picture framing including moulding, mat board, glass, backing and hardware. Free online calculator.
Frame Weight Calculator
Estimate the total weight of a framed artwork including frame, glass, backing, mat and artwork. Get hanging hardware suggestions.
Hanging Wire Calculator
Calculate hanging wire length, D-ring placement and wall hook position for securely hanging framed artwork. Includes wire gauge recommendation.
D-Ring Calculator
Work out D-ring placement, size and screw positions for hanging framed artwork. Includes wall hook recommendations based on weight.
Mount Board Calculator
Calculate mount board dimensions, window cut size, backing board and frame size for picture framing.
Picture Hanging Calculator
Calculate hook positions, wire length, and wall anchor type based on frame weight and dimensions.
Mat Window Calculator
Calculate mat board window opening and outer dimensions with border ratios for professional picture framing.
Calculators for edition sizes, ink coverage, plate and screen dimensions, registration and print areas.
Edition Size Calculator
Plan your print edition with numbered prints, artist proofs, printer proofs and hors commerce. Calculate total impressions needed.
Ink Coverage Calculator
Calculate the amount of printing ink needed based on image area, coverage percentage and edition size. Covers all print methods.
Print Paper Size Calculator
Work out printmaking paper dimensions with correct margins and bleed allowance. Standard bottom-weighted margins for presentation.
Registration Calculator
Calculate registration mark positions for multi-colour printmaking alignment. Covers kento, pin and corner registration methods.
Plate Size Calculator
Work out etching, lino or woodcut plate dimensions including bevel allowance, handling margins and weight. Free online calculator.
Screen Size Calculator
Calculate screen printing frame size, clearance and squeegee dimensions based on your image size and mesh count. Free online calculator.
Print Area Calculator
Calculate the maximum printable area for your etching press, relief press or litho press. Check if your paper and image size fit.
Ink Mixing Calculator
Work out ink mixing ratios by weight or volume for custom printmaking colours. Get exact amounts for reproducible colour mixing.
Edition Ink Calculator
Calculate ink quantity for print editions including per-colour amounts, total ink, paper sheets with spoilage allowance, registration and total edition time.
Edition Numbering Calculator
Calculate edition numbering, artist proofs and pricing tiers for print runs.
Calculators for clay weight, armature sizing, mould volumes, plaster mixing and casting materials.
Clay Weight Calculator
Estimate clay weight for solid or hollow sculptures. Covers earthenware, stoneware, porcelain and air-dry clay with shrinkage.
Armature Calculator
Calculate wire and rod lengths needed for sculpture armatures based on figure height, pose type and proportions. Free calculator.
Mould Volume Calculator
Calculate the volume of silicone, plaster, alginate or jesmonite needed to make a sculpture mould. Includes weight and cost estimates.
Plaster Mix Calculator
Work out the correct plaster-to-water ratio by weight for casting and mould making. Covers Plaster of Paris, Herculite and more.
Bronze Weight Calculator
Estimate bronze casting weight and material cost from wax model dimensions. Essential for planning lost-wax bronze sculpture.
Casting Calculator
Calculate resin, plaster, concrete or jesmonite volume and weight for sculpture casting. Includes waste allowance and cost estimate.
Sculpture Wire Calculator
Calculate wire length and gauge needed for wire sculpture based on design height and complexity. Covers aluminium, steel and copper wire.
Patina Calculator
Calculate chemical patina solution quantities for bronze and metal sculpture finishing. Covers liver of sulphur and ferric nitrate.
Armature Wire Calculator
Calculate wire armature requirements for sculptures including total wire length, weight, base plate size, support rod height and material cost estimate.
Plaster Mixing Calculator
Calculate water-to-plaster ratio and volume needed for casting.
Mould Making Calculator
Calculate silicone rubber volume for making moulds from master dimensions and wall thickness.
Patina Chemical Calculator
Calculate patina solution volumes and concentrations for bronze and copper finishes.
Calculators for wash sizes, paint dilution, paper stretching, masking and watercolour supplies.
Wash Size Calculator
Calculate the volume of diluted watercolour paint needed for flat, graded and variegated washes. Never run out mid-wash again.
Watercolour Dilution Calculator
Calculate watercolour paint-to-water ratios for different wash strengths. Covers wet-on-dry, wet-on-wet, glazing and dry brush.
Paper Stretch Calculator
Calculate gummed tape length, soaking time and drying time for stretching watercolour paper. Covers different paper weights and sizes.
Masking Fluid Calculator
Calculate masking fluid needed for watercolour painting based on area to mask, coverage percentage and number of coats applied.
Colour Lift Calculator
Check which watercolour pigments are liftable, staining or non-staining and plan your painting layers for easier corrections.
Half Pan Calculator
Calculate how many paintings a half pan or full pan of watercolour will last based on your painting frequency and usage style.
Tube Volume Calculator
Calculate how many half pans or full pans a tube of watercolour paint will fill. Plan your palette refills and tube purchases efficiently.
Palette Layout Calculator
Plan your watercolour palette layout by colour temperature, spectrum order or frequency of use. Optimise your pan arrangement.
Wet-on-Wet Timing Calculator
Calculate working time windows for wet-on-wet technique based on paper weight, humidity and temperature.
Granulation Chart Calculator
Calculate pigment granulation effects based on paper texture, water ratio and pigment properties.
Wash Volume Calculator
Calculate paint-to-water ratio and volume for large watercolour washes.
Calculators for nib widths, line spacing, text layout, ink volumes and calligraphy guidelines.
Nib Width Calculator
Calculate the correct calligraphy nib width for your desired x-height and script style. Covers Italic, Foundational, Uncial and more.
Line Spacing Calculator
Calculate x-height, ascender, descender and interline spacing for calligraphy scripts. Get exact measurements for ruling up your paper.
Text Layout Calculator
Calculate how much calligraphy text fits on a page based on x-height, script style, margins and page size. Plan poems and quotes.
Ink Volume Calculator
Estimate how much calligraphy ink you need for a project based on character count, nib width and x-height. Includes waste allowance.
Guideline Calculator
Generate precise calligraphy guideline measurements for any script and nib size. Get ascender, waistline and baseline positions.
Letter Spacing Calculator
Calculate optimal letter, word and sentence spacing for calligraphy scripts. Covers Italic, Foundational, Copperplate and Gothic.
Envelope Calculator
Calculate text positioning and layout for calligraphy envelope addressing. Covers DL, C5, C6 and square envelopes with UK sizes.
Writing Speed Calculator
Estimate calligraphy project duration based on text length, script complexity and skill level. Perfect for quoting commissions.
Calculators for canvas resolution, DPI, file sizes, colour profiles, tablet areas and export settings.
Canvas Resolution Calculator
Calculate pixel dimensions for digital art at any print size and DPI. Get exact canvas resolution for Photoshop, Procreate and more.
DPI Calculator
Convert between DPI, pixel dimensions and physical print size in cm or inches. Three conversion modes for digital artists and printmakers.
File Size Calculator
Estimate digital art file sizes based on pixel dimensions, bit depth, colour mode, format and number of layers. Plan storage needs.
Colour Profile Calculator
Compare colour profile gamuts and calculate colour space coverage for sRGB, Adobe RGB, ProPhoto RGB, Display P3 and CMYK profiles.
Print Resolution Calculator
Calculate the maximum print size from your digital art image resolution at 72, 150, 300 and 360 DPI. Find out how large you can print.
Tablet Area Calculator
Calculate the optimal active area mapping between your drawing tablet and monitor screen. Match aspect ratios to avoid distortion.
Brush Size Calculator
Convert traditional brush sizes to digital pixel equivalents at your working resolution. Match real-world strokes to pixel sizes.
Export Size Calculator
Calculate optimal export dimensions and file sizes for Instagram, web portfolios, print and social media. Keeps aspect ratio.
Calculators for artwork pricing, commissions, gallery fees, material costs and shipping estimates.
Artwork Pricing Calculator
Calculate a fair price for your artwork based on size, materials, time and experience level. Covers material costs and labour.
Commission Calculator
Work out art commission pricing including complexity adjustments, revision fees, rush surcharges, licensing and deposit breakdowns.
Gallery Commission Calculator
Calculate your take-home amount after gallery commission, VAT and costs. Works for UK galleries with standard commission rates.
Material Cost Calculator
Track and total all material costs for an artwork or project. Includes canvas, paint, brushes, mediums and a waste allowance.
Hourly Rate Calculator
Calculate your effective hourly rate from artwork sales. See what you actually earn per hour after deducting materials and overheads.
Shipping Calculator
Estimate artwork packaging and shipping costs for UK and international delivery. Covers boxes, tubes, crates, insurance and handling.
Insurance Calculator
Estimate art insurance premiums for studio, exhibition, storage and transit cover. Based on UK specialist art insurance rates.
Portfolio Calculator
Plan your art portfolio with the right number and mix of pieces for exhibitions, gallery applications, grants and degree shows.
Calculators for varnishing, wood panel construction and painting preparation materials.
Varnish Coverage Calculator
Calculate how much varnish you need for your painting based on size, varnish type, number of coats and surface texture. Free online calculator.
Wood Panel Construction Calculator
Calculate panel cut dimensions, cradle bar lengths, gesso amount and total weight for wooden painting panels. Covers cradled, uncradled and torsion box types.
Paint Palette Calculator
Calculate primary colour, white and medium quantities for painting projects based on canvas size, medium and style.
Calculators for gallery wall spacing, artwork arrangement and exhibition display planning.
Calculators for colour mixing ratios, colour harmonies, paint mixing guides and colour temperature analysis.
Calculators for exhibition planning, gallery wall spacing, hanging arrangements and artwork display.
Calculators for art material quantities, canvas stretcher bars, fabric requirements and construction materials.
Useful reference guides and charts for canvas sizes, colours, framing and drawing materials.
Standard Canvas & Paper Sizes
UK, A-series and US standard canvas and paper sizes in inches and centimetres.
Primary Colour Mixing Chart
Colour mixing reference for pigment and light combinations with complementary pairs.
Picture Frame & Mount Sizes Guide
UK standard picture frame sizes, mount border widths and glass types comparison.
Pencil Grade Hardness Scale
Pencil grading scale from 9H to 9B with recommended uses for drawing and shading.
Why Use ArtCalcs?
Every calculator on this page is completely free, requires no signup, and works on any device. Whether you are a painter, sculptor, printmaker or digital artist, ArtCalcs provides accurate calculations for planning materials and budgets.
From calculating paint coverage and canvas sizes to estimating frame costs and edition planning, these tools help you spend less time on maths and more time creating.