Free calculators for South African businesses

Month-by-month interest and principal breakdown.

Back-solve the effective rate on any loan.

Estimate biannual tax to avoid SARS penalties.

Fees and penalties based on turnover.

Daily compounding — for high-yield accounts.

Project growth with regular contributions.

Internal rate of return on uneven cash flows.

How much you need to retire comfortably in SA.

How a savings plan grows over time.

Time required to reach a savings target.

How long a lump sum lasts at a given draw-down.

Premium-rate pay for overtime and Sundays.

Generate a basic BCEA-compliant contract.

ZAR to/from any major currency.

How couriers price by dimensional weight.

Volume calculation for freight and shipping.

Litres per 100km — fleet and logistics planning.

m², ha, acres, ft² in any direction.

Metric and imperial length conversions.

kg, g, lb, oz, tonne conversions.

Litres, ml, gallons, pints.

Celsius, Fahrenheit, Kelvin.

Joules, kWh, calories, BTU.

Watts, kW, horsepower.

kPa, bar, psi, atm.

KB, MB, GB, TB.

Mbps, Gbps, MB/s.

Troy ounces, grams, tola, baht.

Cost per m² for property, rent, or materials.

Tally cash by denomination.

Quick conversions between large numbers.

Real value of a cash-back offer.

Codes for payments (Zapper, SnapScan) or marketing.

Floor or wall area for paint, tiles, or flooring.

How much flooring you need including offcuts.

Tonnes of asphalt for paving a given area.

Cubic metres or tonnes of gravel needed.

Mulch volume for garden beds.

What an appliance costs to run at your Eskom tariff.

Annual savings from switching to LED lighting.

Professional PDF invoices in seconds.

Compare rates across major SA couriers.

Monitor stock levels and reorder points.

Will building a website pay for itself?

Log and categorise business expenses.

Check name availability against CIPC.