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Imperial Calculator

Convert between inches, feet, yards, and miles with metric mirrors for quick cross-checks.

Formula shown0 inputs definedUpdated Nov 2025By CalcuTotal TeamFree, no sign-up

Quick Summary

Use this when you need:

Translate building dimensions from imperial drawings into metric specs
Convert running or driving distances between miles and kilometres
Keep both metric and imperial figures aligned on international projects

You’ll get:Length

How this is calculated

Formula:

length_target = length_source

In plain language:

All values normalize to meters, then render as inches, feet, yards, miles, or metric units using exact SI factors (1 in = 0.0254 m, 1 ft = 0.3048 m).

The formula is always visible so you can verify the math and explain your numbers to anyone who asks.

What these terms mean

Length

Length used in the calculation.

When to use this calculator

Translate building dimensions from imperial drawings into metric specs
Convert running or driving distances between miles and kilometres
Keep both metric and imperial figures aligned on international projects

Last updated: November 28, 2025

Imperial length explained

Imperial and US customary projects revolve around inches, feet, yards, and miles. This converter keeps metres as the base so every value can show in metric alongside the familiar imperial units without losing precision.

How the conversion works

All inputs are converted to metres using exact factors, then displayed in any supported unit:

Inches: $1\,\text{in} = 0.0254\,\text{m}$
Feet: $1\,\text{ft} = 0.3048\,\text{m}$
Yards: $1\,\text{yd} = 0.9144\,\text{m}$
Miles: $1\,\text{mi} = 1{,}609.344\,\text{m}$

To move between imperial units, values flow through metres to avoid rounding stack-ups.

Units and conversions

Unit	Symbol	Relation to metres
Millimetre	mm	$1\,\text{mm} = 0.001\,\text{m}$
Centimetre	cm	$1\,\text{cm} = 0.01\,\text{m}$
Metre	m	base
Kilometre	km	$1\,\text{km} = 1{,}000\,\text{m}$
Inch	in	$1\,\text{in} = 0.0254\,\text{m}$
Foot	ft	$1\,\text{ft} = 0.3048\,\text{m}$
Yard	yd	$1\,\text{yd} = 0.9144\,\text{m}$
Mile	mi	$1\,\text{mi} = 1{,}609.344\,\text{m}$

Worked examples

Cabinet measurement
$72\,\text{in} \div 12 = 6\,\text{ft}$ ; in metric the same value is $72 \times 0.0254 = 1.8288\,\text{m}$ .
Training route
$5\,\text{mi} \times 1.609344 = 8.04672\,\text{km}$ .
Fabric order
$2\,\text{yd} \times 0.9144 = 1.8288\,\text{m}$ .

Tips and pitfalls

Stick to metres internally, then display inches or feet for stakeholders to keep rounding consistent.
When dimensions exceed a mile, present miles and kilometres together so international teams can read the same figure.
For woodworking, carry at least three decimals in metres before converting back to inches to keep cut lists accurate.

References and further reading

Frequently Asked Questions

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Calculator info

Version:: v1.0.0
Last reviewed:: Nov 28, 2025
Sensitivity:: low

Last updated: November 28, 2025

Imperial length explained

How the conversion works

All inputs are converted to metres using exact factors, then displayed in any supported unit:

Inches: $1\,\text{in} = 0.0254\,\text{m}$
Feet: $1\,\text{ft} = 0.3048\,\text{m}$
Yards: $1\,\text{yd} = 0.9144\,\text{m}$
Miles: $1\,\text{mi} = 1{,}609.344\,\text{m}$

To move between imperial units, values flow through metres to avoid rounding stack-ups.

Units and conversions

Unit	Symbol	Relation to metres
Millimetre	mm	$1\,\text{mm} = 0.001\,\text{m}$
Centimetre	cm	$1\,\text{cm} = 0.01\,\text{m}$
Metre	m	base
Kilometre	km	$1\,\text{km} = 1{,}000\,\text{m}$
Inch	in	$1\,\text{in} = 0.0254\,\text{m}$
Foot	ft	$1\,\text{ft} = 0.3048\,\text{m}$
Yard	yd	$1\,\text{yd} = 0.9144\,\text{m}$
Mile	mi	$1\,\text{mi} = 1{,}609.344\,\text{m}$

Worked examples

Cabinet measurement
$72\,\text{in} \div 12 = 6\,\text{ft}$ ; in metric the same value is $72 \times 0.0254 = 1.8288\,\text{m}$ .
Training route
$5\,\text{mi} \times 1.609344 = 8.04672\,\text{km}$ .
Fabric order
$2\,\text{yd} \times 0.9144 = 1.8288\,\text{m}$ .

Tips and pitfalls

Stick to metres internally, then display inches or feet for stakeholders to keep rounding consistent.
When dimensions exceed a mile, present miles and kilometres together so international teams can read the same figure.
For woodworking, carry at least three decimals in metres before converting back to inches to keep cut lists accurate.

Quick Summary

Calculator Tool

How this is calculated

What these terms mean

Length

When to use this calculator

Imperial length explained

How the conversion works

Units and conversions

Worked examples

Tips and pitfalls

References and further reading

Frequently Asked Questions

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Calculator info

Imperial length explained

How the conversion works

Units and conversions

Worked examples

Tips and pitfalls

References and further reading

Frequently Asked Questions

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