Tuckpointing Calculator — Mortar, Bags, Labor & Cost

Estimate tuckpointing and repointing from wall area or measured mortar-joint length. Calculate joint footage, mortar volume, whole bags, labor hours and cost.

Heat Loss Calculator — Walls, Windows & Air Leakage

Estimate design heat loss through walls, windows, ceiling, floor and air leakage, with an editable BTU/h and kW breakdown.

Rainwater Harvesting Calculator — Tank Size & Daily Balance

Compare rainwater tanks using a storm and dry spell or your daily rainfall data. See water supplied, shortages, overflow and the reserve left each day.

Wallpaper Calculator — Rolls, Pattern Repeat & Cost

Estimate wallpaper rolls for rooms or separate walls. Account for strip rounding, trim, straight or half-drop repeat, reserve, reusable offcuts, leftover length, and cost.

Brick & Block Calculator — Units, Pallets & Mortar

Estimate new brick, breeze-block and glass-block walls. Calculate courses, edge cuts, whole units, pallets, installation mortar and material cost.

Tile Layout Calculator — Square Feet, Edge Cuts & Boxes

Compare centered tile layouts and both orientations, then calculate square footage, edge cuts, tiles, boxes, waste, grout and cost.

Paint Calculator — Gallons, Liters, Cans & Cost

Estimate paint for rooms, walls, and ceilings. Subtract doors and windows, set coats and coverage, and see gallons or liters, cans, leftover paint, and cost.

Tubing Capacity Calculator

Calculate tubing capacity from a common size and weight, actual ID, or OD and wall thickness; total stepped strings and plan pump volume, time and strokes.

Annular Space & Capacity Calculator

Calculate annular space capacity and volume, solve target fill length, total stepped intervals, and estimate bottoms-up strokes and circulation time.

Baseboard Calculator — Boards & Cut List

Turn measured wall runs into boards to buy and a labelled cutting plan. Allow for saw cuts, fitting, stock ends and spare boards.

Beam Deflection Calculator — Loads & Diagrams

Combine point and distributed loads on a simply supported or cantilever beam. Explore deflection, shear, bending moment and reactions in metric or US units.

Board Foot Calculator — Lumber List & Cost

Add stock boards, compare supplier quote units and estimate your lumber order. See board feet, whole spare boards and a clear cost breakdown.