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From mulch for your garden to coffee for your morning.
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Will my compost fill these seed trays?
Check trays from leftover compost, then whole bags needed for your target.
Can I complete this candle order?
Compare wax, fragrance, containers and wicks, then buy the missing packs.
Will these two photos fit my frame?
Fit unequal prints into a measured insert with a weighted bottom border.
Read practical calculation guides for worked examples and measurement choices.
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40 calculators · 6 categoriesMulch calculator
Calculate cubic yards and bags of mulch from your bed size and desired depth.
Coffee ratio calculator
Find coffee grams for your brew water and chosen coffee-to-water ratio.
Paint coverage calculator
Estimate wall paint and whole cans from room dimensions, openings, and coats.
3D print cost calculator
Add filament, electricity, machine time, and labor into one print cost estimate.
Sourdough hydration calculator
Calculate true dough hydration including the flour and water in your starter.
Tile & boxes calculator
Work out tiles, whole boxes, and spare tiles with a waste allowance.
Raised bed soil calculator
Calculate soil for one or more identical raised beds, with a combined whole-bag order and leftover volume.
Ad revenue calculator
Model website ad revenue from page views and an assumed page RPM.
Video file size calculator
Estimate storage from video bitrate, audio bitrate, and recording duration.
Wallpaper roll calculator
Estimate wallpaper rolls with strip counts and straight-match pattern repeats.
Flooring carton calculator
Calculate floor area, extra material, and whole cartons for a rectangular room.
Concrete slab calculator
Convert slab dimensions to cubic yards and bags using your product’s yield.
Potting soil calculator
Plan compost for identical pots from dimensions or measured fresh fill. Check pots fillable from stock and whole bags to buy for the combined shortfall.
Plant spacing calculator
Count plants in aligned rows with an explicit edge margin. Use equal spacing or set a different distance between rows, in inches or centimetres.
Drip irrigation calculator
Estimate water delivered by drip emitters from flow and runtime.
Recipe scaling calculator
Scale a full recipe to target servings or available ingredients. Find the limiting supply, scaled amounts and leftovers without changing units.
Pizza dough calculator
Split a target dough batch into flour, water, salt, yeast, and oil by weight.
Cake pan conversion calculator
Scale a recipe between round and rectangular cake pans at the same batter depth.
Candle wax & fragrance calculator
Split a candle batch into wax and fragrance using either wax-mass or finished-blend percentages.
Resin volume calculator
Estimate mixed resin volume and mass for a rectangular casting.
Fabric piece yardage calculator
Calculate fabric length for identical rectangular pieces with seam allowances.
Board foot calculator
Calculate board feet and lumber cost from thickness, width, length, and quantity.
Electricity cost calculator
Estimate an appliance’s energy use and running cost over a chosen number of days.
Aquarium water volume calculator
Estimate rectangular tank water volume in liters and U.S. gallons after displacement.
Upload time calculator
Estimate file-transfer time from file size, connection speed, and usable throughput.
Photo print size calculator
Find print dimensions from pixels and PPI, or fit the whole photo on paper with exact borders and effective resolution.
Break-even units calculator
Calculate the whole sales units needed to cover fixed and variable costs.
Gross margin calculator
Compare margin with markup, or find the selling price needed for a target percentage. Prices round up to 0.01 to preserve your target.
Stacked discount calculator
Calculate a final price after two successive percentage discounts.
Freelance hourly rate calculator
Estimate the billable rate needed to cover an annual pay target and business costs.
Remaining filament calculator
Estimate remaining filament length from spool weight, tare, diameter, and material density.
Uncompressed audio size calculator
Calculate raw PCM audio storage from sample rate, stored bit depth, channels, and duration.
Time-lapse planning calculator
Estimate time-lapse clip length, or plan the frames and shooting time for a target clip. Check exposure timing and still-photo storage.
Grass seed quantity calculator
Calculate grass seed weight, whole bags, and leftover seed using the rate on your bag.
Gravel volume & tonnage calculator
Estimate gravel volume and weight, subtract usable stock and calculate whole supplier bags with leftover mass.
Photo aspect-ratio crop calculator
Find exact crop dimensions, margins and image area kept for 16:9, 4:5, 9:16 or print ratios. A numerical planner; no image upload or editing.
Sleeper raised bed cut list calculator
Plan a UK sleeper raised bed in millimetres: butt-joint cuts, saw kerf, reusable offcuts and the minimum number of stock sleepers for your plan.
Seed tray compost calculator
Calculate compost for seed trays, subtract stock already on hand and buy whole bags. Use cell capacity, a measured tray fill or tapered cells.
Candle stock & order calculator
Plan a candle order from ingredient, container and wick stock. See wax and fragrance totals to prepare, whole packs to buy and a restock budget.
Two-photo mat layout calculator
Fit two different-sized photos into an existing frame or calculate a new mat size. Get borders, window coordinates and a scaled preview.
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