✅ Live
Cable Size Calculator
Find the correct cable size for any SA circuit. Checks current carrying capacity and voltage drop against SANS 10142. Single and three-phase.
Use Calculator →🔧 Trades & Artisan Tools
Practical calculators for South African electricians, plumbers, painters, tilers and landscapers. SA standards, SA materials, real job conditions.
Electrician Tools
✅ Live
Voltage Drop Calculator
Calculate voltage drop for any cable size, run length and load. Verify SANS 10142 compliance for new and existing circuits.
Use Calculator →✅ Live
DB Board Load Calculator
Calculate total load on a distribution board. Check phase balance, total amps, and whether your main breaker is correctly sized.
Use Calculator →✅ Live
Inverter / Battery Backup Sizing
Size an inverter and battery bank for your load shedding needs. Calculate runtime, battery capacity and inverter kVA required.
Use Calculator →✅ Live
Generator Size Calculator
Calculate the minimum generator size (kVA) to run your essential loads. Covers resistive and motor loads with starting current factors.
Use Calculator →✅ Live
Solar Panel Sizing Calculator
Size a solar PV system for your daily energy needs. SA irradiance data, panel quantity, and inverter sizing — linked to Section 12B tax incentive.
Use Calculator →Plumber Tools
✅ Live
Geyser Size Calculator
Calculate the correct geyser capacity for your household. Based on number of occupants, usage patterns and SANS 10106 guidelines.
Use Calculator →✅ Live
Water Tank / JoJo Sizing Calculator
Size a JoJo or rainwater tank for your household needs. Daily consumption, roof catchment area and days of storage autonomy.
Use Calculator →✅ Live
Pipe Flow / Pressure Calculator
Calculate flow rate and pressure drop through pipes. Covers HDPE, uPVC and copper pipe for residential and light commercial applications.
Use Calculator →✅ Live
Rainwater Harvesting Calculator
Calculate how much water your roof can collect annually. SA rainfall data by province, roof area, and storage tank sizing recommendations.
Use Calculator →Painter Tools
✅ Live
Paint Coverage Calculator
Calculate litres needed for any interior or exterior paint job. Plascon and Dulux SA coverage rates, number of coats, wastage factor included.
Use Calculator →✅ Live
Paint Labour Estimator
Estimate painting labour cost by surface area. SA labour rates per m² for walls, ceilings, trim and exterior surfaces.
Use Calculator →Tiling & Plastering Tools
✅ Live
Tile Calculator
Tile quantity, adhesive and grout with wastage factor. Covers floor and wall tiling with multiple tile sizes and SA adhesive coverage rates.
Use Calculator →✅ Live
Plastering Calculator
Sand, cement and water quantities for scratch and finish coats. Coverage by wall area, coat thickness and mix ratio — SA standards.
Use Calculator →Garden & Landscaping Tools
✅ Live
Irrigation / Lawn Watering Calculator
Calculate watering requirements for SA lawns and gardens. Water-wise scheduling based on grass type, climate zone and municipal restrictions.
Use Calculator →✅ Live
Soil / Compost Volume Calculator
Calculate topsoil, compost or mulch volumes for beds and lawns. Depth and area inputs, bulk bag quantities, and SA supplier sizing.
Use Calculator →Also need property investor or developer calculators?
15 investor tools and building cost calculators are live now.