Formula
- Use the units shown beside each field.
- Results update automatically whenever you change an input.
- Displayed values use up to four decimal places, or scientific notation for very small or large numbers. Calculations use standard floating-point arithmetic; exact integer and fraction tools identify their own precision rules.
- Equal productivity and parallel work; no minimum charges or travel unless included in fixed charges.
Example Calculation
- Area: 120 m²
- Productivity per worker: 30 m²/h
- Workers: 2
- Rate per worker-hour: 20 currency/h
- Supplies and fixed charges: 10 currency
120 m² at 30 m² per worker-hour takes four worker-hours or two hours with two workers; the listed rates total 90.
Frequently asked questions
How do I use this calculator?
Enter area, productivity per worker, workers, rate per worker-hour, supplies and fixed charges. The result updates automatically. Use Reset to restore the example values.
What method does it use?
labor hours=area/productivity; elapsed=worker-hours/workers; cost=worker-hours × rate+fixed.. Equal productivity and parallel work; no minimum charges or travel unless included in fixed charges.
Why might a rounded result differ?
The calculation keeps full numeric precision internally, then rounds the displayed result. Rounding intermediate steps by hand can produce a slightly different answer.
Are my inputs saved online?
No. This calculator processes your inputs in your browser. A recently used list stores only calculator names on this device, not your entered values.
Check the assumptions and units before using this result. Read about calculation methods.