Does Karvonen Heart Rate upload my file or text to Tool-You servers?

No. Karvonen Heart Rate runs in this browser tab. Files stay on the device. Limit note: Rest below max. Intensity 1–100. Not 220−age alone. Not coaching.

Should I use Max Heart Rate instead of Karvonen Heart Rate?

Use Karvonen Heart Rate when you need Target pulse from rest, max, and intensity. Use Max Heart Rate when you need Estimate max HR with Fox, Tanaka, Gulati, or Oakland. They share a category (Health) but not the same job.

Karvonen Heart Rate

Target pulse from rest, max, and intensity.

Target is rest + (max−rest)×percent. Unlike Heart Rate Zones this uses a resting pulse. Unlike Max Heart Rate this is not 220−age alone. Rest must be below max. Percent 1–100. Not coaching.

What Karvonen Heart Rate does

Target is rest + (max−rest)×percent. Unlike Heart Rate Zones this uses a resting pulse. Unlike Max Heart Rate this is not 220−age alone. Rest must be below max. Percent 1–100. Not coaching.

This URL is only for Karvonen Heart Rate (health · karvonen hr). Target pulse from rest, max, and intensity. Other Health tools on Tool-You look similar in the chrome, so the job definition below is the part that belongs to Karvonen Heart Rate alone: Target is rest + (max−rest)×percent. Unlike Heart Rate Zones this uses a resting pulse. Unlike Max Heart Rate this is not 220−age alone. Rest must be below max. Percent 1–100. Not coaching.

How to use Karvonen Heart Rate

Confirm you need Karvonen Heart Rate, not Max Heart Rate (Estimate max HR with Fox, Tanaka, Gulati, or Oakland.). Address: /health/karvonen-hr.
Enter the numbers or dates Karvonen Heart Rate uses. Target pulse from rest, max, and intensity.
Read the result as Karvonen Heart Rate defines it — not as Heart Rate Zones (Fox 220 minus age, then percent bands.). Target is rest + (max−rest)×percent. Unlike Heart Rate Zones this uses a resting pulse. Unlike Max Heart Rate this is not 220−age alone. Rest must be below max. Percent 1–100. Not coaching.
Karvonen Heart Rate is an estimate in the browser, not professional advice. Rest below max. Intensity 1–100. Not 220−age alone. Not coaching.
Need a different formula? Try Heart Rate Zones (Fox 220 minus age, then percent bands.) instead of stretching Karvonen Heart Rate.

When not to use Karvonen Heart Rate

Skip Karvonen Heart Rate when a neighbor tool matches better — start with Max Heart Rate or Heart Rate Zones — or when the description already warns the job will fail. In the tool’s own words: Target is rest + (max−rest)×percent. Unlike Heart Rate Zones this uses a resting pulse. Unlike Max Heart Rate this is not 220−age alone. Rest must be below max. Percent 1–100. Not coaching.

Questions about Karvonen Heart Rate

What does Karvonen Heart Rate do that other Health pages on this site do not?: Target is rest + (max−rest)×percent. Unlike Heart Rate Zones this uses a resting pulse. Unlike Max Heart Rate this is not 220−age alone. Rest must be below max. Percent 1–100. Not coaching. Short version: Target pulse from rest, max, and intensity.
Does Karvonen Heart Rate upload my file or text to Tool-You servers?: No. Karvonen Heart Rate runs in this browser tab. Files stay on the device. Limit note: Rest below max. Intensity 1–100. Not 220−age alone. Not coaching.
Should I use Max Heart Rate instead of Karvonen Heart Rate?: Use Karvonen Heart Rate when you need Target pulse from rest, max, and intensity. Use Max Heart Rate when you need Estimate max HR with Fox, Tanaka, Gulati, or Oakland. They share a category (Health) but not the same job.
What are the limits of Karvonen Heart Rate?: Rest below max. Intensity 1–100. Not 220−age alone. Not coaching. Also: Target is rest + (max−rest)×percent. Unlike Heart Rate Zones this uses a resting pulse. Unlike Max Heart Rate this is not 220−age alone. Rest must be below max. Percent 1–100. Not coaching.