All Calculators

Browse every free calculator on Efficienco, organized by category.

27 tools live across 3 categories · Free to use

Browse by category

All live tools

Construction Materials

18 live
Bitumen Calculator
Estimate asphalt paving-mix tonnage and, separately, its bitumen-binder portion, layers, coverage, costs and truckloads.
Construction Materials
Brick Calculator
Estimate wall bricks, waste, mortar volume, bags and cost from verified brick and joint dimensions.
Construction Materials
Building Material Calculator
Estimate construction materials from area, wall dimensions, volume, linear length or item count, including waste and package rounding.
Construction Materials
Concrete Block Calculator
Concrete, cinder block and CMU calculator for wall takeoffs, openings, waste, mortar, grout/core fill, rebar, pallets and costs.
Construction Materials
Concrete Calculator
Calculate geometric concrete volume and an order allowance for slabs, footings, cylindrical posts and direct volume entries.
Construction Materials
Crushed Stone & Stone Tonnage Calculator
Estimate crushed stone and stone tonnage from project dimensions, depth and an editable bulk density.
Construction Materials
Crusher Run Calculator
Estimate crusher run volume, tonnage, loads and cost for a measured base using explicit density and ordering assumptions.
Construction Materials
Cubic Yards to Tons Calculator
Convert cubic yards and short tons in either direction using an explicit, editable material bulk density.
Construction Materials
Drywall Calculator
Estimate drywall sheets for multiple walls and ceilings. Compare sheet sizes, net-area and surface-grid counts, openings, layers, waste and cost.
Construction Materials
Linear Feet Calculator
Calculate linear feet from pieces, runs, perimeter or area, then estimate stock pieces and cost per foot.
Construction Materials
Lumber Calculator
Estimate lumber boards, purchased length, board feet and optional cost for linear requirements or surface coverage.
Construction Materials
Paver Base Calculator
Plan aggregate base and bedding sand as separate material orders for a patio, walkway or paver driveway.
Construction Materials
Pea Gravel Calculator
Estimate pea gravel volume, tonnage, bag count and cost from dimensions, depth and editable supplier assumptions.
Construction Materials
Polymeric Sand Calculator
Estimate polymeric sand bags from label coverage ranges or rectangular-paver joint volume and entered bag yield, with multiple zones, allowance and cost.
Construction Materials
Rebar Calculator
Estimate rebar grid counts, total length, stock bars and weight from drawing-specified spacing and cover.
Construction Materials
River Rock Calculator
Estimate river rock or river stone in yards, tons, bags and loads with visible density and allowance assumptions.
Construction Materials
Square Footage Calculator
Measure square footage for multiple rectangles, circles, triangles, trapezoids and L-shaped rooms, with deductions, material allowance and optional cost.
Construction Materials
Stud Calculator
Estimate wall studs and plate stock from wall length, spacing, openings and editable framing allowances.
Construction Materials

Home Improvement

5 live
Asphalt Driveway Cost Calculator
Calculate a preliminary asphalt driveway budget using your dimensions, finished thickness and editable local rates.
Home Improvement
Home Addition Cost Calculator
Estimate home addition costs with editable local rates, itemized low-to-high ranges, permits and contingency. Compare options and save your budget report.
Home Improvement
Paint Calculator
Estimate paint and primer for multiple rooms or surfaces, with three paint groups, ceiling paint, explicit coats, label coverage and whole-container costs.
Home Improvement
Pool Salt Calculator
Calculate pool salt additions or dilution from tested ppm, pool volume, product purity and bag size.
Home Improvement
Roof Pitch Calculator
Convert roof pitch, angle, slope percent and rise/run. Calculate geometric slope length and uniform-pitch roof area in US or metric units.
Home Improvement

Building Trades

4 live
HVAC Duct Calculator
Size round, rectangular and flat-oval HVAC ducts; check airflow capacity, velocity, friction and available pressure with editable assumptions and reports.
Building Trades
Line Pipe Weight Calculator
Estimate bare pipe weight and fluid-filled operating weight from actual dimensions, material density and piece count.
Building Trades
Mini Split Sizing Calculator
Estimate a one-zone cooling load, compare nominal mini split sizes and check your own design cooling and heating loads.
Building Trades
Recessed Lighting Calculator
Plan recessed-light grids, fixture count, beam spacing and wall-wash rows from explicit room and product inputs.
Building Trades