Unit converter

Convert between the units that come up on site: mm and m, m² and hectares, m³ and litres, kilograms and tonnes.

✓ Free, no sign-up ✓ Works on your phone, standing at the problem ✓ The formula and the assumptions are always shown

IT CIVILS  ·  IT ADMIN BUSTER
1 Enter the job

Unit converter

Worked out at itcivils.com/free/calculators/  ·  Free construction calculators for site teams.
Check every quantity against your own specification and your supplier's own figures before ordering.

A worked example

This is the job the page opens with, already worked out. Change any figure above and the answer changes with it.

The job

Value
1 000
Measuring
Length

The answer

1 000m  ·  As entered

mm
1 000 000
m
1 000
km
1

The working

The value is read as 1 000 m and shown in every other unit of the same kind.

What it assumes

All eighteen calculators

Every one has its own page, so you can bookmark the one you use most.

Concrete and masonry

Earthworks and roads

Roofing and finishes

Setting out and levels

On the job

2 Stay in the loop

Get the next tool when it lands

New tools get built when the admin gets annoying enough. Leave your email and you will hear when the next one lands. What you do on site is what decides what gets built, so it is worth saying.

Why these are free, and what they assume

These come from ten years on site: first in contracting on production and civil works, then in consulting doing construction monitoring for consultants appointed by the City of Cape Town. Working a quantity out twice, because the first answer was on a piece of board that blew away, is a thing that happens to everybody.

Every calculator shows the formula it used and the assumptions it made, because a number with no working behind it is worth nothing on site. Where a figure varies by material or supplier, it is an input you can change rather than something hidden. Check the answers against your own specification and your supplier's own figures before you order. These help you work faster, they do not replace your own judgement.

If they save you time, the paid IT Admin Buster packs cover the admin side: progress report templates, daily diaries, inspection checklists and the wording banks that go with them.