Heart Rate Zone Calculator

What this calculator does

Every input on this heart rate zone calculator maps to a real decision, so the output is something you can act on immediately, not a rough ballpark you'll have to double-check elsewhere.

Heart rate zones guide training intensity.

Inputs required: 1

Category: Health & Fitness

Result updates live as you type — no "Calculate" button needed.

Purpose-built for a specific decision — not a generic template.

How to use the Heart Rate Zone Calculator

Enter your values in the fields on the left.
Results update automatically.
Use the action buttons to copy, share or print.

The formula

Max HR ≈ 220 − age; zones are % of max.

Worked example

Age 30: max 190 bpm, Zone 2 = 114–133 bpm.

Common mistakes

Using generic formula for athletes
Ignoring HR drift
Not using chest strap

When to use it

Use for cardio and endurance training.

Pro tips for the Heart Rate Zone Calculator

Copy the result to paste it directly into email, Notion, or a spreadsheet cell.
Use Print / PDF to export a clean, ad-free summary you can share with a client or advisor.
The chart updates live — drag values up and down to build intuition for how the formula behaves.

Frequently asked questions

›Best formula?

Tanaka or measured max HR are more accurate.

›Zone 2 base?

Yes — build aerobic base.

›Chest vs wrist HRM?

Chest more accurate.

›Overtraining sign?

Elevated resting HR.

›Recovery HR?

Drop in first minute is fitness marker.

›How accurate is this heart rate zone calculator?

The formulas match the standard textbook definition shown above. Rounding is applied only for display; underlying computation uses full floating-point precision. For regulated health & fitness decisions, always confirm with a qualified professional.

›Can I embed the Heart Rate Zone Calculator on my site?

Embedding isn't public yet, but you can link directly to this page — the URL is stable and shareable.

Embed this calculator

Drop the Heart Rate Zone Calculator into your own site or blog post. Free to use — a small “Powered by CalcPilot” link is appreciated.

<iframe src="https://calcpilot.tools/calculators/heart-rate-zone-calculator?embed=1" width="100%" height="720" style="border:1px solid #e5e7eb;border-radius:12px;max-width:720px;" loading="lazy" title="Heart Rate Zone Calculator — CalcPilot"></iframe>