Library

Health tools

Health tools is a Netra Code page for people who need clear rules, not a sales script. Educational estimators only. They do not diagnose or dose medication.

health tools illustration on Netra Code
Health tools — Netra Code

Educational estimators only. They do not diagnose or dose medication.

Health tools in practice

Read this Health tools page together with the tool library and the contact details. Outbound policy pages we keep in view include Google Privacy Policy and W3C WAI when the topic is ads or access.

How this Health tools page is edited

We update the Health tools when the product changes. We do not invent offices, reviews, or staff. Email corrections rather than posting personal data in a comment.

Does the Health tools replace the live tools?

No. Calculators stay on their own URLs. This Health tools text is the policy or explainer layer.

Accuracy for the Health tools depends on the quality of what you type. Garbage in, garbage out still applies. If you mix units, the Health tools cannot guess your intent. Re-read the labels, then run it again.

Mobile use of the Health tools should not require pinch-zooming the buttons. If a control overflows, email the URL. Desktop and phone should show the same method for this Tools tool.

Print or PDF export is not required for the Health tools. Copy text, or download when the tool offers a file. Do not photograph the screen as your only record if the number matters later.

Language on the Health tools page is English. Formulas do not change when you translate the labels in your head. Keep the original units.

Netra Code will not add YouTube or Facebook video downloaders next to the Health tools. Social tools here are counters and drafts.

Accessibility: every Health tools field should have a visible label. Keyboard users can tab through the form. If a result is only shown as colour, that is a bug — report it.

Performance: the Health tools should feel instant for ordinary inputs. Huge files are the exception. Close other tabs if a phone runs out of memory on a merge.

Versioning: if the Health tools method changes, the page copy should say so. We would rather document a simplification than hide it.

Teaching: you can use the Health tools in a classroom as long as students know it is an estimate. Do not grade someone on a web calculator as if it were a statute.

Slug health-tools is the stable URL piece for this Health tools. Prefer that permalink in internal links so redirects stay simple.

Competitors exist. The reason to use this Health tools on Netra Code is the labelled method, the related tools, and the fact that we do not upsell a download of someone else’s video.

If you need a human, use the contact email. Include the Health tools URL and what you typed (never passwords or medical records).

A second pass on the Health tools is worth doing after you sleep on the first number. People change an input, forget they changed it, and trust a result that no longer matches the story they tell a doctor, a lender, or a client. Write the inputs down next to the Health tools output if anyone else will see it.

Netra Code keeps the Health tools on a stable permalink so guides, hubs, and the homepage can point at one URL. If you are documenting a process for a team, link that permalink rather than copying the JavaScript. When the method is updated, everyone who used the link sees the same change.

Finally, the Health tools is only useful if you understand the unit on each field. A height in centimetres is not a height in inches. A rate in percent is not a decimal. Re-read the Health tools labels every time you come back after a long break.

Accuracy for the Health tools depends on the quality of what you type. Garbage in, garbage out still applies. If you mix units, the Health tools cannot guess your intent. Re-read the labels, then run it again.

Mobile use of the Health tools should not require pinch-zooming the buttons. If a control overflows, email the URL. Desktop and phone should show the same method for this Tools tool.

Print or PDF export is not required for the Health tools. Copy text, or download when the tool offers a file. Do not photograph the screen as your only record if the number matters later.

Language on the Health tools page is English. Formulas do not change when you translate the labels in your head. Keep the original units.

Netra Code will not add YouTube or Facebook video downloaders next to the Health tools. Social tools here are counters and drafts.

Accessibility: every Health tools field should have a visible label. Keyboard users can tab through the form. If a result is only shown as colour, that is a bug — report it.

Performance: the Health tools should feel instant for ordinary inputs. Huge files are the exception. Close other tabs if a phone runs out of memory on a merge.

Versioning: if the Health tools method changes, the page copy should say so. We would rather document a simplification than hide it.

Teaching: you can use the Health tools in a classroom as long as students know it is an estimate. Do not grade someone on a web calculator as if it were a statute.

Health

BMI calculator

Body mass index from height and weight.

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Health

BMR calculator

Mifflin–St Jeor basal metabolic rate.

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Health

TDEE calculator

Daily energy use from BMR and activity.

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Health

US Navy body fat

Circumference estimate (not a diagnosis).

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Health

Ideal weight (Devine)

Devine formula estimate.

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Health

Waist-to-hip ratio

Waist divided by hip.

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Health

Max heart rate

220 minus age (estimate).

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Health

Heart rate zones

Five training zones from max HR.

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Health

One-rep max

Epley estimate from a submaximal set.

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Health

Protein intake

Grams per kg of body weight.

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Health

Water intake

Rough daily fluid target.

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Health

Calorie deficit

Weekly loss estimate from a daily deficit.

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Health

Macro split

Protein / carbs / fat from calories.

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Health

Due date

Naegele: LMP plus 280 days.

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Health

Ovulation window

Estimate from cycle length.

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Health

Sleep cycles

Wake times in 90-minute cycles.

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Health

Caffeine remaining

5-hour half-life estimate.

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Health

Steps to calories

Rough burn from steps and weight.

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Health

Running pace

Pace from distance and time.

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Health

Lean body mass

Boer formula estimate.

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Health

Mean arterial pressure

MAP from systolic and diastolic.

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Health

Pulse pressure

Systolic minus diastolic.

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Blood pressure category

AHA adult categories (not a diagnosis).

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Health

Glucose mg/dL ↔ mmol/L

Divide or multiply by 18.

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Health

Ideal weight (Robinson)

Robinson height-weight estimate.

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Health

Katch–McArdle BMR

BMR from lean mass.

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Health

Fasting window

Eating window leftover in 24h.

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Health

UK alcohol units

Units from volume and ABV.

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Health

Smoking cost

Yearly spend from packs and price.

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Health

Waist-to-height ratio

Waist divided by height.

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Health

VO2 max (Uth)

Simple HR-based estimate.

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Health

Pace to speed

km/h from min/km.

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Health

Running calories

MET-style estimate.

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Health

Target HR (Karvonen)

Training HR from rest and max.

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