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Feet and Inches to Metres and Centimetres Calculator

Live math canvas

Your numbers, formula and explanation together

Feet and Inches to Metres and Centimetres Calculator: 15 metres and centimetres. Feet and Inches to Metres and Centimetres Calculator uses the declared inputs to produce a transparent default result. Feet: 5 ft; Inches: 10 in; primary comparison: 5 and 10.

Formula applied

The exact method behind this answer

CalculationTime keeps the method visible so the number can be checked instead of blindly trusted.

Total inches = feet × 12 + inches. Metres = total inches × 0.0254. Centimetres = metres × 100.
  1. Apply the formulaTotal inches = feet × 12 + inches. Metres = total inches × 0.0254. Centimetres = metres × 100.15 metres and centimetresFeet and Inches to Metres and Centimetres Calculator uses the declared inputs to produce a transparent default result. Feet: 5 ft; Inches: 10 in; primary comparison: 5 and 10.

Your live breakdown

Current inputs in the calculation

These values come from the controls above and update when the calculator changes.

Feet
5 ft
Enter the whole-foot part of the imperial measurement.
Inches
10 in
Enter the inch part. Values above 12 are accepted and converted through total inches.

Resulting answer

15 metres and centimetres

Feet and Inches to Metres and Centimetres Calculator uses the declared inputs to produce a transparent default result. Feet: 5 ft; Inches: 10 in; primary comparison: 5 and 10.

Answer
15 metres and centimetres
Live support
Feet and Inches to Metres and Centimetres Calculator uses the declared inputs to produce a transparent default result. Feet: 5 ft; Inches: 10 in; primary comparison: 5 and 10.

Assumptions used

What this answer assumes

Exact inch-to-metre basis. Round only after choosing the precision your job or record needs.

  • 1 foot is treated as exactly 12 inches.
  • The international inch is exactly 25.4 millimetres, which is 0.0254 metres.
  • Results are shown to practical decimal precision; keep more decimals for engineering records if required.
  • This is a length conversion only. It does not add construction waste, cutting allowance or material tolerance.

Master’s Tip

How to use the result well

Master’s Tip: for building and material orders, record the original imperial dimensions and the converted metric dimensions together. When cuts, kerfs, tolerances or offcuts matter, round purchase quantities upward rather than trusting a bare converted length.

Printable record

What belongs in the saved calculation

Save the inputs, result, formula, assumptions, page URL and date together so the calculation can be reviewed later.

Feet
5 ft
Enter the whole-foot part of the imperial measurement.
Inches
10 in
Enter the inch part. Values above 12 are accepted and converted through total inches.

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Embed this calculator

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Formula

Total inches = feet × 12 + inches. Metres = total inches × 0.0254. Centimetres = metres × 100.

Worked example

5 ft 10 in = 5 × 12 + 10 = 70 total inches. 70 × 0.0254 = 1.778 metres. 1.778 × 100 = 177.8 centimetres.

Professional note

Master’s Tip: for building and material orders, record the original imperial dimensions and the converted metric dimensions together. When cuts, kerfs, tolerances or offcuts matter, round purchase quantities upward rather than trusting a bare converted length.

Regional and unit assumptions

Standard or basis: the international inch is exactly 25.4 mm, or 0.0254 m. This page uses transparent unit-conversion arithmetic based on that exact relationship.

Assumptions and limitations

Methodology & Accuracy

How this calculator is checked

CalculationTime pages are built around visible arithmetic: the formula, assumptions, worked example and practical limitations are shown so the result can be checked rather than simply trusted.

Formula used

Total inches = feet × 12 + inches. Metres = total inches × 0.0254. Centimetres = metres × 100.

Standard or basis

Standard or basis: the international inch is exactly 25.4 mm, or 0.0254 m. This page uses transparent unit-conversion arithmetic based on that exact relationship.

Where a calculator follows a named legal, trade or industry standard, that standard is cited visibly. Otherwise the page uses transparent general arithmetic and states its limits.

Master's Tip

Master’s Tip: for building and material orders, record the original imperial dimensions and the converted metric dimensions together. When cuts, kerfs, tolerances or offcuts matter, round purchase quantities upward rather than trusting a bare converted length.

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Questions

How many metres is 5 feet 10 inches?

5 feet 10 inches is 70 total inches. Multiply 70 by 0.0254 to get 1.778 metres, or 177.8 centimetres.

What is the formula for feet and inches to metres?

First calculate total inches = feet × 12 + inches. Then multiply total inches by 0.0254 to get metres.

Is one inch exactly 2.54 centimetres?

Yes. The international inch is exactly 25.4 millimetres, which is exactly 2.54 centimetres or 0.0254 metres.

Should I round metric measurements for construction?

For records, keep the precise conversion. For purchasing material, round upward where cuts, tolerances, waste, kerfs or manufacturer sizing can affect the final quantity.

Can inches be more than 12 in the input?

Yes. The calculator converts everything through total inches, so 5 ft 14 in is treated as 74 total inches.

Calculation note

Feet-and-inch measurements remain common in construction, height records and older plans, while metric metres and centimetres are used internationally. A transparent converter helps preserve the original imperial measurement while producing a precise metric record.

Why the inch-to-metre relationship can be exact

Modern conversions are not estimates when they use the international inch definition. Since the inch is defined from the metre through an exact millimetre relationship, feet-and-inch lengths can be converted to metres and centimetres with deterministic arithmetic.

Why builders should keep both measurements

On site, a drawing, supplier sheet or legacy dimension may be imperial while the material order or compliance record is metric. Keeping both the original and converted values reduces transcription mistakes and makes later checks easier.

Precision is different from purchasing tolerance

A conversion can be exact while a real-world cut is still affected by saw kerf, product sizing, expansion gaps, offcuts or material waste. That is why the printable report shows the arithmetic clearly but warns against using a converted number as the only ordering allowance.

Sources and further readingNIST: SI Units — LengthBIPM: SI Brochure