Work it out.
Each trade has its own numbers. Here all of Discebo's calculators are gathered — from heat loss and dew point through voltage drop and water velocity to mortar, fall, load chart and stopping distance. Choose a trade and start calculating.
2657 calculators across 122 trade
§ — Plate must be unfolded, not guessed
The Unfolding Library — from number to cutting pattern.
How it works
Tank, funnel, edged panel, bent bracket and edge profile: enter the dimensions (or just number of litres), and get the flat cutting pattern with dimensions, bend list, bill of materials, workshop drawing and DXF for the laser.
Open the Unfolding Library§ — Do you know them?
Guess which trade the calculator belongs to.
How to play
- You get a lead from one of the trades — a tool, a calculator, an article, or a quiz.
- Guess which trade — or which tool — it belongs to.
- Build your streak, and go from Apprentice to Master.
All the trades · 2657 calculators · 122 trade
Each trade has its own subject matter — here are all the trades with their own calculators, most first. Choose a trade and dive in.
Gardener
Measurement — area · Number of plants per area
21 calculatorsBricklayer
Bricks per m² · Total number of bricks
20 calculatorsScaffolding
Load class → permitted load · Facade & deck area
19 calculatorsCarpenter
Material usage — area · Linear metres of boards
19 calculatorsElectrician
Ohm's law & power · Voltage drop
17 calculatorsPlumbing
Water velocity in pipe · Heat output from water flow
17 calculatorsInsulation
HVAC class · Insulation thickness
16 calculatorsCleaning technician
Dosing calculator · Ratio ↔ percent
16 calculatorsBus driving licence
Stopping distance · Driving/rest time
15 calculatorsTruck driving licence
Driving and rest time · Payload & weight check
15 calculatorsForklift certificate
Residual capacity at load centre · Load centre from load length
15 calculatorsMetal fabricator
Steel weight (plate) · Sum value for air pollution
65 calculatorsMetal worker
Metal weight of sheet/part · Bend allowance (K-factor)
61 calculatorsIndustrial technician training
Spindle speed from cutting speed · Table feed and cutting time (milling)
55 calculatorsShip fitter
Hydraulic cylinder force · Steel plate weight
49 calculatorsTechnical designer
Scale · A formats: scaling between formats
44 calculatorsProduction and assembly education
Tightening torque for a bolt · Resin and hardener mix
43 calculatorsProcess operator
Dilution of a solution · Mixing two concentrations
36 calculatorsIndustrial operator
OEE (plant effectiveness) · Yield and waste percentage
35 calculatorsTechnical insulator
Funnel and hopper · Rectangular elbow
34 calculatorsPlumbing and energy
Tank and vessel · Funnel and hopper
34 calculatorsCNC technician training
Cutting speed to spindle speed · Feed rate in milling
33 calculatorsTechnical insulation
Rectangular elbow · Square-to-round transition
31 calculatorsWoodworking trades' construction training
Rafter length and roof surface area · Number of rafters and running metres of battens
30 calculatorsFarrier
Hoof-pastern axis: toe and heel angle · Horseshoe steel: length, weight and price
29 calculatorsBuilding joiner
Stair formula (rise ratio) · Wood - shrinkage and swelling with changes in moisture
29 calculatorsProperty service technician
Degree-day-corrected heat consumption · Paint consumption for walls
28 calculatorsDairy worker
Standardisation of milk (Pearson's square) · Heating energy for pasteurisation
28 calculatorsWelding
Sum value for air pollution · The welding certificate's calendar
27 calculatorsChimney sweep
Chimney draught (buoyancy) · Clear area from pipe diameter
26 calculatorsRoofer
Roof area, battens and tiles · Roof pitch: fall, percentage and ratio
26 calculatorsTool education
Cutting data: spindle speed and feed · Tolerances and fits
26 calculatorsRefrigeration technician
Cooling capacity (sensible heat) · COP and EER for refrigeration systems
25 calculatorsMaritime crafts
Sail area (mainsail) · Sailcloth and cloth consumption
25 calculatorsPlastic worker
Is my epoxy and isocyanate certificate valid? · Butt welding of PE pipes
25 calculatorsBaker and Pastry Chef
Baker's percentage and dough scaling · Food cost and contribution margin
24 calculatorsContracting and agricultural machinery education
Hydraulic cylinder force · Cylinder speed & oil volume
24 calculatorsBodywork technician
2-component mixing calculator (filler, primer, clear coat) · Surface area for painting and filling
24 calculatorsAgricultural education
Seed rate · Nitrogen (N) for the field
24 calculatorsInstallation contractor, building contractor, and road layer
Earth volume · Sewer fall
23 calculatorsAutomation Technician
Ohm's law and power · Pneumatic cylinder force
23 calculatorsData and Communication Education
Subnet calculator (IPv4) · Transfer time
23 calculatorsElectronics and low-voltage training
Ohm's law and power · Voltage divider
23 calculatorsFine mechanic
Spindle speed (turning and milling) · Feed rate (milling)
22 calculatorsHTX — Technical Upper Secondary School
Weighted grade point average · Percentage deviation (experiment)
22 calculatorsTruck mechanic
Tightening torque & unit conversion · Engine revs at speed
22 calculatorsSurface finisher
Wet film from desired dry film · Reach and paint consumption
22 calculatorsButcher
Slaughter yield · Cutting yield
22 calculatorsNutrition assistant
Scale up recipe · Food cost and contribution margin
21 calculatorsGastronome (chef)
Recipe scaling · Food cost & contribution margin
21 calculatorsCrane operator
Which crane certificate does the crane require? · Lifting people by crane
21 calculatorsAnimal keeper
Daily feed quantity · Medication dosing by weight
20 calculatorsEvent Coordinator
Break-even on ticket sales · Contribution margin and margin ratio
20 calculatorsFilm and TV production education
Video file size from bitrate · Recording time on a memory card
20 calculatorsFinance education
Annuity loan – repayment · Compound interest (savings)
20 calculatorsAircraft technician
Weight and balance (centre of gravity) · Fuel – volume to weight
20 calculatorsPhotographer
Exposure value (EV) · Equivalent shutter speed
20 calculatorsCrane
Which crane certificate does the crane require? · Lifting people by crane
20 calculatorsmachine carpenter
Sheet consumption with waste · CNC feed rate and cutting speed
20 calculatorsCar mechanic
Compression ratio · Gear ratio
20 calculatorsPlastic, epoxy & asbestos
Is my epoxy and isocyanate certificate valid? · Butt welding of PE pipes
20 calculatorsSign technician
Film consumption and waste · Scale ratio / scaling up
20 calculatorsWatchmaker
Frequency converter (Hz ↔ A/h) · Gear ratio (gears)
20 calculatorsAuto Painter
Paint mixing (2K) · Paint consumption and coverage
19 calculatorsBoat mechanic
2-stroke mixing ratio · Antifouling consumption
19 calculatorsFitness and trainer education
BMI (body mass index) · 1RM (Epley)
19 calculatorsGlazier
Glass weight and lifting calculation · Energy balance Eref – facade window
19 calculatorsGourmet butcher
Yield percentage when cutting · Brine and nitrite check
19 calculatorsGraphic technician
Number up per press sheet (imposition) · Weight of printed sheets and print run
19 calculatorsGreenkeeper
Fertiliser quantity from nitrogen target · Filling a field sprayer
19 calculatorsPort and terminal education
Slinging: WLL at sling angle · Tie-down lashing: number of lashings
19 calculatorsBiomedical technician assistant
Pure Tone Average (PTA) and degree of hearing loss · Air-bone gap
19 calculatorsProducer
OEE – the plant's effectiveness · Yield and rejection percentage
19 calculatorsSecurity guard
Occupant capacity and escape route width · CCTV storage requirement
19 calculatorsForest and nature technician
Plant spacing and plant requirement · Timber volume of standing trees
19 calculatorsSocial and health assistant
Medication calculation: dose to volume · Drip rate during infusion
19 calculatorsFoundry technician
Casting weight · Casting yield
19 calculatorsWaiter
Items in a drink · Glasses per bottle
19 calculatorsVeterinary nurse
Medication dosing · Fluid infusion rate
19 calculatorsParamedic
Weight-based dose (mg/kg) · Drip rate for infusion
18 calculatorsAuto Assistance
Required pulling force (vehicle recovery) · Winch force with pulley block
18 calculatorsClothing craftsperson
Curtain fabric with fullness (heading tape) · Fabric consumption with pattern repeat
18 calculatorsBuilding painter
Facade area · Wall area for painting
18 calculatorsBicycle and motorcycle mechanic
Displacement (engine size) · Gear development (metres per pedal revolution)
18 calculatorsThe retail education with specialties
Markup and contribution margin ratio · Selling price from desired contribution ratio
18 calculatorsDigital media education
Print resolution (DPI/PPI) · Video file size
18 calculatorsEUX
Weighted grade point average (7-point scale) · Bonus A-adjusted average
18 calculatorsUtilities operator
District heating output from flow and cooling · Tank volume (vertical cylinder)
18 calculatorsHairdresser
Colour mixing · Bleaching: powder and developer
18 calculatorsGold and silversmith
Carat, fineness and gold content · Casting weight – wax to metal
18 calculatorsTrade education with specializations
Selling price and mark-up · Contribution margin and margin ratio
18 calculatorsOffice education with specialties
VAT calculator · VAT backwards (extract VAT)
18 calculatorsWarehouse & logistics
Warehouse turnover rate and days of inventory · Gross weight of a packed pallet
18 calculatorsThe airport education
Load securing – required restraining force · Fuel: litres to kilos
18 calculatorsStaff development
Takt time · OEE — overall equipment effectiveness
18 calculatorsReceptionist
Occupancy, ADR and RevPAR · Currency exchange at reception
18 calculatorsStonecutter and stone technician
Stone weight and lifting check · Board utilisation – number of tiles
18 calculatorsDental technician
Wax to alloy (casting weight) · Carat and gold content
18 calculatorsIntestine technician
Casing volume and sausage filling · Brine — Baumé and density
18 calculatorsTheatre, event, and AV technician
Rigging: working load limit (WLL) · Power consumption and the 16 A limit
18 calculatorsTrain preparation training
Braking percentage · Axle load
18 calculatorsUpholstery
Fabric consumption for curtains · Foam for upholstery
17 calculatorsSustainability & green transition
Electricity consumption & power cost · Energy saving from replacement
17 calculatorsElectronics operator
Ohm's law and power · Two resistors – series or parallel
17 calculatorsBeautician
Dilution of essential oils · Treatment price and hourly rate
17 calculatorsWarehouse and terminal training
Packages per pallet · EAN-13 barcode – check digit
17 calculatorsMedia designer
Resolution & print size · Grammage and sheet weight
17 calculatorsFurniture carpenter and organ builder
Wood moisture · Timber shrinkage across the width
17 calculatorsOrthotist
EU shoe size (Paris point) · Mondopoint size
17 calculatorsPedagogical assistant
Energy content of a meal · BMI (Body Mass Index)
17 calculatorsPlasterer
Casting volume · Render consumption
17 calculatorsDental assistant
Apprentice pay — estimate · Fluoride varnish consumption (Duraphat)
17 calculatorsWeb developer
px ↔ rem conversion · Colour contrast (WCAG)
17 calculatorsPreparatory adult education (FVU)
Lessons to hours · SVU share with FVU
16 calculatorsFirst aid & fire
CPR rate and cycles (30:2) · Time without resuscitation - your own rate
16 calculatorsService assistant
Heavy lifting — weight against distance limit · Chlorine disinfection — tablets and ppm
16 calculatorsService assistant
Dosing mixture (mixing ratio) · Working solution in per cent
16 calculatorsSocial and health helper
Dose calculation - number of units · BMI - Body Mass Index
16 calculatorsIntestine cleaner
Filling capacity of the casing · Piece-rate pay per shift
16 calculatorsCarpenter
Edge profile — free bend profile in thin sheet · Edge-bent panel
11 calculatorsBricklayer
Edge profile — free bend profile in thin sheet · Gutter — half-round, quarter-round and box
8 calculatorsElectrician
Bent bracket · Edge-bent panel
3 calculators