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, South Africa
Practical calculators for South African electricians, plumbers, painters, tilers, bricklayers, plasterers and landscapers. SA standards, SA materials, real job conditions.
🕐 All tools updated October 2026
Electrician Tools
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 →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 →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 →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 →Solar Panel Sizing Calculator
Size a solar PV system for your daily energy needs. SA irradiance data, panel quantity, inverter sizing and the Section 12B tax incentive for qualifying systems.
Use Calculator →Plumber Tools
Geyser Size Calculator
Calculate the correct geyser capacity for your household. Based on number of occupants, usage patterns and SANS 10106 guidelines.
Use Calculator →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 →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 →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
Paint Coverage Calculator (Material)
Need paint quantities and material cost instead of labour? Use the Paint Coverage Calculator in Developer Tools for Plascon and Dulux SA coverage rates, coats and wastage.
Use Calculator →Paint Labour Estimator
Estimate painting labour cost by surface area. SA labour rates per m² for interior walls, ceilings and exterior walls.
Use Calculator →Bricklaying, Tiling & Plastering Tools
Tiling Labour Cost Calculator
Estimate what a tiler will charge for your floor or wall project. 2026 SA tiler rates per m² for straight, diagonal and pattern layouts, with wet-area waterproofing.
Use Calculator →Plastering Labour Calculator
Estimate plasterer labour costs for any SA project. Scratch coat, finish coat or both. Low, mid and high range estimates based on 2026 SA rates per m².
Use Calculator →Bricklaying Labour Cost Calculator
Estimate what a bricklayer will charge to build your wall. 2026 SA rates per m² and per 1000 bricks for single skin, double skin and face brick walls.
Use Calculator →Garden & Landscaping Tools
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 →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 →Paving Labour Cost Calculator
Estimate what a paving contractor will charge for your driveway or patio. 2026 SA rates per m² for running bond, herringbone and base preparation.
Use Calculator →Also need property investor or developer calculators?
34 investor calculators and 15 developer calculators are live now.