Job labour time and cost estimator
The calculator needs JavaScript. The worked example, formula and figures below show exactly how it works, so you can do the sum yourself. A guide, not advice. Check your supplier's or maker's figures before ordering.
Short answer
Worked example
| You enter | Value |
|---|---|
| Tasks | Lay bricks: type of work Other, quantity 600, output per person per day 300, people on the task 2 |
About 1 day on site, 2 person-days of labour
| Result | Value |
|---|---|
| Days on site (tasks one after another) | 1 days |
| Whole days to book | 1 |
| Person-days | 2 person-days |
| Task | Quantity | Per person-day | People | Person-days | Days |
|---|---|---|---|---|---|
| Lay bricks | 600 | 300 | 2 | 2 | 1 |
Show the working
- Lay bricks: 600 ÷ 300 per person-day = 2 person-days; ÷ 2 people = 1 days
- Whole days to book: 1 rounded up = 1
How it works
- Person-days = quantity ÷ output per person per day
- Days on site for a task = person-days ÷ people on the task; tasks are added up as if done one after another
- Labour cost = person-days × your day rate per person
Output rates vary with the job, access, weather and the people doing it: use figures from your own jobs where you can.
Whole days to book rounds the total up to the next full day.
Our default (adjustable)
These are typical planning figures and our own allowances, not facts about your product. Change any of them in the calculator to match your bag, pack or tin.
This calculator has no built-in defaults: every figure comes from you or your product's data.
Regulations and standards
These are UK figures.
| Table | Clause | Nations | Status |
|---|---|---|---|
| Output per person-day by task (presets) TODO: Researcher to source (brief v2 S7 states no output rates) | TODO: published estimating guide, per row | UK-wide | 0/6 values entered Not yet checked against the source |