Calculator for Designer
27 calculator tools hand-picked for Designer.
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Aspect Ratio Calculator
Calculate aspect ratio — fix any 1 of [width, height, ratio], get the other two.
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Board Foot Calculator
Thickness × width × length ÷ 12 = board feet — multi-row cut list, per-BF cost, imperial ⇄ m³ — browser-only
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Air Conditioner BTU Calculator
Room area × ceiling × orientation × people → cooling BTU/h, 匹 (horsepower) and kW — sizes an AC right the first time — browser-only.
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Carpet Calculator
Rooms + roll width + waste → linear metres, billed area (m² / ft² / sq yard) and cost — browser-only
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Color Mixer
Color mixer — blend any two colors with adjustable ratio, RGB/HSL/LAB color space, predict the result and copy hex.
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Concrete Calculator
Slab, column, round footing & stairs → cubic meters/yards + cement bags, sand and gravel — browser-only
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Depth of Field Calculator
Near limit, far limit, total depth of field & hyperfocal distance from your sensor, focal length, aperture and focus distance — browser-only
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Drywall Calculator
Wall + ceiling area → sheets, drywall screws, joint tape & compound — metric and imperial — browser-only
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Exposure Value (EV) Calculator
EV = log2(N²/t) from aperture + shutter + ISO, plus equivalent-exposure solving and a Sunny-16 reference — browser-only
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Fence Calculator
Total run + post spacing → posts, panels/pickets, rails, concrete bags — metric & imperial — browser-only
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Flooring Calculator
Room sizes + flooring type + box coverage + waste → net area, boxes, planks, and cost — metric or imperial, browser-only.
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Golden Ratio Calculator
Split any length by φ = 1.618 — long/short segments, golden sequence, font scale, layout columns, golden rectangle — browser-only
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Grass Seed Calculator
Lawn area + species + new/overseed → exact seed weight and bag count — metric & US — browser-only
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Gravel Calculator
Area + depth → volume, tonnes, bulk bags — driveways, drainage, paths — browser-only
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Megapixel Calculator
Width × height → megapixels, aspect ratio, file size, and max print size at any DPI. Reverse it too. 100% in your browser.
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Mulch Calculator
Garden bed area + spread depth → cubic yards, bags and bulk — multi-bed, metric/imperial — browser-only
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Paint Calculator
Wall area → litres & cans of paint, with doors/windows deducted, coats and price — metric & US units, browser-only
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Plant Spacing Calculator
Bed size + in-row & row spacing → exact plant count — square vs triangular layout — browser-only
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PPI Calculator
Pixel density, dot pitch, physical size, aspect ratio & a retina check from resolution + diagonal — all in your browser
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PX REM EM Converter
CSS px ↔ rem ↔ em converter — visual scale, base font size adjustable.
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Ratio Calculator
Solve a:b = c:x, simplify ratios, split a total by a ratio, scale a recipe up or down — with full steps, browser-only
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Roofing Calculator
Roof footprint + pitch → real sloped area, roofing squares, shingle bundles or sheets and underlayment rolls — metric & US, browser-only
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Slope Calculator
Two points in, full line out — slope, angle, distance, midpoint, y = mx + b and grade % — browser-only
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Square Footage Calculator
Add every room, get one total in ft² and m² at once — waste % + cost — browser-only
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Stair Calculator
Total rise + steps → rise/run, slope, Blondel comfort check + side-view diagram — metric & imperial, browser-only
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Tile Calculator
Room area + tile size + grout joint + waste → tiles, boxes, and cost — metric or imperial, browser-only.
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Wallpaper Calculator
Wall size + roll spec + pattern repeat → strips per roll, total strips, rolls to buy — handles straight & half-drop match — browser-only