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Ideal Weight Calculator

Calculate your ideal weight range based on height and healthy BMI. Find your target weight.

Last reviewed: 3 December 2025Source: NHS — Health A-Z
Ideal Weight Calculator · UKHealth & Fitness

Rates & sources

Population-average body composition metrics. Always consult a qualified clinician before making health decisions.

Source: NHS — Health A-Z — figures refreshed at the start of each tax year.

When to use this calculator

  • Before setting a new health goal or checking whether a plan is realistic.
  • When you want to compare different assumptions without tracking them manually.
  • When you need a quick baseline before discussing the result with a professional.

A realistic UK planning example

Use these sample inputs as a quick scenario test, then change one variable at a time to compare outcomes.

Height (cm)

178 cm

After entering these figures, compare healthy weight range and midpoint before deciding which scenario looks strongest.

How to read your results

Healthy Weight Range

This is a planning range, not a personal target in isolation, so use it with context and common sense.

Midpoint

Use this metric to compare scenarios side by side and understand how the key drivers affect the final outcome.

Method & assumptionsAuthoritative sources

Enter your height to calculate the healthy weight range based on a BMI of 18.5 to 24.9. This gives the medically defined normal weight range for your height. The midpoint represents the middle of the healthy range. Note that BMI-based ideal weight does not account for muscle mass — athletes and heavily built individuals may sit outside this range while being perfectly healthy.

Common mistakes

  • !Using optimistic assumptions without testing a more cautious scenario as well.
  • !Comparing outputs from different tools without checking that the inputs match.
  • !Treating the result as a final quote instead of a planning estimate.

What to do next

  • Try at least one more scenario so you can compare a realistic range instead of a single estimate.
  • Use the related calculators below to cross-check the decision from another angle.
  • Open one of the linked guides if you need more context before you act on the result.

Frequently asked

Ideal weight is typically defined as the weight range corresponding to a BMI of 18.5–24.9. Enter your height above to see your specific range.

Use arrow keys to navigate items, Enter or Space to expand/collapse.

End-of-article next steps

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