Calculator hub

Everyday Calculators

Use measured inputs to compare everyday quantities without sending those values anywhere.

Decision paths

Connect the metrics before acting

Use the calculators in this hub together and confirm that their periods, units and assumptions are compatible.

3 tools

everyday

Calculate fuel used per 100 kilometres and distance per litre from a measured trip.

everyday

Calculate a chosen gratuity amount, the total bill and an optional equal per-person amount.

everyday

Estimate carbon dioxide equivalent from an activity amount and an emission factor you enter.

Guide

A practical method for collecting compatible measurements before using an everyday, home or technology calculator.