240+ calculators · costs included · free
Convert any unit. Estimate concrete, paint, loft floors, wiring, mortgages — with real material and labour costs for your region.
Each industry hub lists every calculator on one page — directory style.
Length, weight, volume, temperature, speed, pressure, energy, data and more.
9 calculators →
Concrete, brickwork, roofing, framing, loft floors and material take-offs with full cost estimates.
11 calculators →
Pipe sizing, flow rate, pressure drop and water heater sizing with material + labour costs.
2 calculators →
Ohm's law, voltage drop, wire gauge, conduit fill and energy cost.
3 calculators →
Torque, MPG, tyre size, gear ratio and engine displacement.
3 calculators →
Paint coverage, wallpaper rolls, primer — with full cost-per-m² breakdown.
1 calculators →
Mulch, topsoil, fertiliser, sprinkler coverage and fencing with cost estimates.
1 calculators →
Cups to grams, oven temps, recipe scaling, hydration and cost-per-portion.
2 calculators →
BMI, BMR/TDEE, body fat, 1RM, pace and macros.
3 calculators →
Mortgage, loan, compound interest, tip, sales tax and ROI.
13 calculators →
Shingles, underlay, gutters and roof area by pitch.
3 calculators →
Tile count, laminate planks, hardwood board feet and tile adhesive.
3 calculators →
BTU sizing, duct CFM, AC tonnage and heat-loss estimates.
5 calculators →
Panel count, battery bank, off-grid load and payback period.
4 calculators →
Volume, chlorine and salt dosing, heater sizing.
3 calculators →
Seed rate, NPK fertilizer, irrigation flow and silage.
7 calculators →
Cleaning time, carpet cost and supply consumption.
2 calculators →
Portion sizing, food cost %, menu pricing and drink counts.
5 calculators →
Ink coverage, vinyl roll, booklet imposition and job pricing.
2 calculators →
DOF, hyperfocal, exposure equivalents and shoot pricing.
2 calculators →
Truck size, box count, moving labour and storage volume.
2 calculators →
Margin, markup, break-even, shipping cost and inventory turn.
4 calculators →
ROAS, CAC/LTV, CTR, CPC and email open rate.
4 calculators →
Target hourly rate, project quote and tax set-aside.
3 calculators →
Board feet, stain coverage, sheet yield and edge banding.
3 calculators →
Rod consumption, gas flow and weld cost per metre.
2 calculators →
Filament weight, cost per print and resin volume.
2 calculators →
Headcount catering, bar quantities, venue capacity and seating.
4 calculators →
Dog food, cat litter and aquarium dosing.
2 calculators →
Rental yield, cap rate, BRRRR, stamp duty and break-even rent.
5 calculators →
Plasterboard sheets (1200×2400/2500), skim coat and drywall screws — EU sizing.
2 calculators →
Sand-cement-lime external render mixes for European facades.
1 calculators →
Sand-cement and liquid floor screed by m² and thickness.
1 calculators →
Loft and cavity insulation roll counts to UK/EU building-regs depths.
1 calculators →
Double/triple-glazing area and U-value heat-loss costs.
1 calculators →
Scaffold hire by linear metre, lifts and weeks.
3 calculators →
Flue sizing for stoves and sweep cost.
1 calculators →
Norfolk reed and long-straw bundle counts for thatched roofs.
1 calculators →
Dry-stone and pointed wall tonnage.
1 calculators →
Carpet rolls (EU 4 m / 5 m widths), underlay and gripper.
1 calculators →
EU 600 mm base units, worktops and fit-out cost.
1 calculators →
Suite, tiling and refit cost.
1 calculators →
Turf rolls (1 m²) and topsoil bed.
1 calculators →
Tree felling cost by height and access.
1 calculators →
UK 6 ft panels, posts and postcrete.
1 calculators →
200×100 mm blocks, sub-base and jointing sand.
1 calculators →
EPDM/butyl liner sizing and pond volume.
1 calculators →
Honey yield and jar counts.
1 calculators →
ABV from OG/FG hydrometer readings.
1 calculators →
ABV and IBU for beer recipes.
2 calculators →
Cheese yield from raw milk by type.
2 calculators →
Croissant tourage and bakery ratios.
1 calculators →
Carcass yield by species.
1 calculators →
Bouquet pricing with EU florist markup.
1 calculators →
Fabric metres at EU widths (110/140/150 cm).
1 calculators →
Sofa re-cover fabric metres.
1 calculators →
Karat & scrap value from EU hallmarks (375/585/750/916).
1 calculators →
EDP/EDT dilution from concentrate.
1 calculators →
Cold-process lye and water from SAP values.
1 calculators →
Soy/paraffin wax weight for a batch.
1 calculators →
Clay shrinkage for stoneware/porcelain.
1 calculators →
Forge coal/coke consumption.
1 calculators →
Soda-lime gob weight for blown pieces.
1 calculators →
Spine width and paper GSM.
1 calculators →
Per-window pricing with frames/sills.
1 calculators →
Machine load and solvent top-up.
1 calculators →
Euro-cylinder TS007 lock change costs.
1 calculators →
Gear ratio, development and speed.
1 calculators →
Charge time and cost at EU tariffs.
1 calculators →
Air-source heat pump kW and running cost.
1 calculators →
Combi boiler kW from radiators + bathrooms.
1 calculators →
Stere ↔ cord, weight and heat output.
1 calculators →
Collector area for household hot water.
1 calculators →
Tank size from roof area and EU rainfall.
1 calculators →
Add/remove VAT at any EU rate (19–27%).
2 calculators →
Validate an IBAN with mod-97 check.
1 calculators →
UK SDLT for residential purchases.
1 calculators →
Annual running cost from kWh/year labels.
2 calculators →
Annual revenue from nightly rate and EU occupancy.
1 calculators →
EU stand cost from m², build and staffing.
1 calculators →
Inoculated oak/hazel yields for Périgord, Burgundy and summer truffles.
1 calculators →
Crocus bulbs, m² and ROI for dried saffron production.
1 calculators →
Olives to EVOO yield by variety with bottling math.
1 calculators →
Weight-loss curing of pata negra over 24–36 months.
1 calculators →
Riddling pupitres, dégorgement and cellar floor area.
1 calculators →
Milk to mozzarella DOP yield for cow and buffalo.
1 calculators →
Angel's share evaporation in oak-barrel ageing.
1 calculators →
Modena 5-barrel solera cascade annual draw.
1 calculators →
Cow-milk to wheel math and herd sizing.
1 calculators →
Sleán-cut peat brick yield and heating value.
1 calculators →
Hives per heather moor and seasonal honey yield.
1 calculators →
Snail-farm stocking density and edible yield.
1 calculators →
Flowers to essential oil mL by yield %.
1 calculators →
Stem yield and revenue for indoor Wasabia japonica.
1 calculators →
Spent coffee grounds to oyster mushroom yield.
1 calculators →
Péage cost by km and vehicle class across France/Italy.
1 calculators →
Daily and annual clean-air-zone charges.
1 calculators →
Cross-Alpine road-tax sticker costs.
1 calculators →
Dover–Calais ferry vs Eurotunnel cost & time.
1 calculators →
Break-even days for an Interrail / Eurail pass.
1 calculators →
FlixBus / Eurolines vs high-speed rail on cost and CO₂.
1 calculators →
A1/A2/A3 categories, exam and registration fees.
2 calculators →
Driven pheasant shoot cost per gun and tipping.
1 calculators →
DIY, part and full livery annual cost.
1 calculators →
Sand, fibre and rubber tonnage for a 20×60 m FEI arena.
1 calculators →
Stakes and binders per metre of laid hedge.
1 calculators →
Hazel / sweet chestnut yield per hectare.
1 calculators →
Withies per basket and bundles to order.
1 calculators →
Lamb crop and EU/UK basic-payment subsidy.
1 calculators →
Fleece kg to spun yarn skeins.
1 calculators →
Cave volume and humidifier load for ageing wheels.
1 calculators →
Pink salt grams and ingoing nitrite ppm vs EU/USDA limits.
1 calculators →
Cheese, potatoes and charcuterie per guest.
1 calculators →
Gruyère/Vacherin, wine and kirsch ratios.
1 calculators →
Cold/hot pintxos and txakoli per guest.
1 calculators →
Bratwurst, pretzels and Festbier per guest.
1 calculators →
Pan diameter to portions, bomba rice and saffron.
1 calculators →
Breton crêpe batter by guest count.
1 calculators →
Trays, dough and oven cycles for focaccia / sourdough.
1 calculators →
Mooring fees and insurance for canal living.
2 calculators →
Cost to raise a Venetian ground floor by N cm.
1 calculators →
German Pfand / NL Statiegeld annual refund.
1 calculators →
Sedum and intensive green-roof saturated load.
1 calculators →
Annual birch firewood for a wood-fired kiuas.
1 calculators →
Underfloor heat demand and heat-pump electricity.
1 calculators →
Annual bompenger savings vs ICE vehicles.
1 calculators →
Shutter-box size, slat length and motor torque.
1 calculators →
Rooflight quantity for 10% glazing rule.
1 calculators →
Annual heat demand vs 15 kWh/m²·a target.
1 calculators →
Cork kg and revenue from a Portuguese montado.
1 calculators →
Basking-lamp wattage and UVB tube sizing by species and enclosure volume.
1 calculators →
SAC / RMV rate and gas planning from tank pressure, depth and dive time.
1 calculators →
Session estimates from size, style, artist rate and shop minimum.
1 calculators →
Per-client cost and margin for gel manicures.
1 calculators →
Weekly revenue and payback from slot pricing and utilisation.
1 calculators →
Storage and bandwidth from episode length, bitrate and downloads.
1 calculators →
Per-unit LP cost for EU pressing plants including plating and jackets.
1 calculators →
Route profit from vends, COGS and site commission.
1 calculators →
Grams of hot wax per session by length and snow temperature.
1 calculators →
Kiuas kW rating and stone weight from cabin volume.
1 calculators →
OEE, throughput, cycle time and line-balancing for factories and workshops.
1 calculators →
Carbon accounting, ESG reporting and EU CSRD/CBAM compliance calculators.
1 calculators →
Cross-border salary conversion, cost-of-living parity and remote payroll planning.
1 calculators →
Burn rate, runway, ARR, MRR, CAC/LTV and unit economics for software businesses.
1 calculators →
Cross-border shipping, customs duty, brokerage fees and Incoterms landed-cost math.
2 calculators →
Concrete Volume Calculator
Work out concrete volume in m³ or yd³ plus how many bags you need for any slab, footing or column.
Paint Coverage Calculator
Work out how many litres or gallons of paint you need for a room or wall.
Loft Conversion Floor Cost Calculator
Estimate the cost of laying a new floor in a loft conversion — chipboard, laminate or engineered oak — with materials, labour, joists and insulation.
BMI Calculator
Calculate your Body Mass Index from height and weight.
Mortgage Calculator
Monthly mortgage payment, total interest and amortisation summary.
Torque Converter (Nm ↔ ft-lb)
Convert torque between Newton-metres, foot-pounds, inch-pounds and kgf·m.
Ohm's Law Calculator
Solve for voltage, current, resistance or power given any two of V, I, R or P.
MPG ↔ L/100km Converter
Convert fuel economy between US MPG, UK MPG and L/100km.
Every applicable calculator includes a cost estimate. Pick budget, standard or premium materials and see the real cost — including the trap where cheap paint needs 3 coats and costs more.
Each industry has a regional sponsor slot. Visitors in your area see your business at the moment of intent. One slot per region — get yours.
Sponsor a region →No login needed. Every calc has a shareable URL — paste your result into a quote or chat.