Calculators for artists
29 free calculators: DPI, print, paint, perspective. Runs in your browser, no sign-up.
Canvas size for print
Centimeters and DPI to pixels for A3, A4, and custom sizes. Estimate PSD weight by layers. Free for CSP, Photoshop, Proc…
Aspect ratios
Enter width in pixels — get height for 1:1, 4:3, 16:9, A4, Instagram, and YouTube. For covers and illustration.…
DPI from pixels
4000 px on 30 cm — what DPI? Density for prints, stickers, and merch. Free in the browser.…
DPI ↔ PPI ↔ cm
Convert pixels, DPI, and centimeters in one place. For print prep and art export.…
PSD file size
Estimate 4000×4000 with N layers at 8/16 bit. See if RAM is enough before you start.…
Social media sizes
Optimal pixels and ratios for posts, portfolios, and pins. Export sharp previews.…
RGB ↔ HEX ↔ CMYK
Color conversion for web and print. HEX, RGB, and approximate CMYK in one tool.…
Pixel art tiles
Sprite size, tile size, and grid — how many tiles you need and sheet layout.…
Palette generator
Base color → 5–7 shades for pixel art and flat style. Click a swatch to copy HEX.…
Art time estimate
Sketch, line, or full render × style → hours. Plan freelance deadlines.…
Commission price
Bust, half, full × render × rush. RUB, USD, or EUR. Not financial advice.…
Income planner
Target income, average price, work days → commissions per month, week, and day.…
Materials cost
Canvas, paint, supplies — total cost in RUB, USD, or EUR.…
Selling price
Cost + hours × rate + markup. Choose currency.…
Canvas F/P/M sizes
French F, P, and M stretchers, plus scale from your reference’s long side.…
Paint amount
Area, paint type, and coats → ml and 60 ml tubes. Acrylic is about 100 ml/m² per coat.…
Color mixing
Two colors and a target — A/B ratios. Linear RGB; real pigments differ.…
Perspective grid
Canvas size, horizon, 1–2 VPs — diagram and coordinates.…
Figure proportions
Height in px or cm → head unit and canon grid for character art.…
Paint thinning
Acrylic, oil, gouache — water or solvent per 10 ml paint.…
Drying time
Oil, acrylic, gouache — layer, temp, humidity → time to next layer.…
Brush size
Canvas long side in cm → mm for sketch, blocking, and detail.…
Value mix
Two value steps and a target from 1 to 9. Get the percentage of each paint, including a mix that lands on 8.…
Drawing grid cells
Image size and column count become cell width and height in pixels, for copying a reference on a grid.…
Golden ratio
One side in centimeters becomes the other side of a golden rectangle and the cut of the long side.…
Color harmony
Complementary, analogous, triadic and split-complementary hues from one color. Saturation and lightness stay.…
Mat and frame
Artwork size, mat border and moulding width become the window, the mat outside and the frame.…
Drawing scale
Reference size and a target long side: the new width, height and the enlargement percentage.…
Paper weight
Convert watercolor, text and bond paper between pounds and gsm. 140 lb watercolor is 300 gsm.…