Training Zones Converter

Updated Sep 2026 Used 0 times

Your result

Converted training-zone convention

Enter your values, then calculate to see a verified result.

Inputs usedReview the information used for this result.

Full calculation and sourcesOpen Full calculation and sources to audit the formula, assumptions, fixtures, and interpretation limits.

Versioned calculationFormula v1.0.0

Method shown

The selected equation and assumptions stay visible.

Cross-checked

Supporting outputs expose unit and protocol mistakes.

Actionable

The result links to the next relevant planning task.

Step 1Choose maximum heart rate or FTP.Five to three at reference 200

Step 2Select the source zone count.Five to three at reference 200

Step 3Select a different target zone count.Five to three at reference 200

Interpretation

Zone nomenclature varies across coaches, federations, devices, and sports.

Conversion does not discover individual thresholds.

Heart-rate and power values cannot be converted directly into each other.

Use this result

Check the worked exampleAudit the equation with a concrete case.Interpret the result safelyReview what the result can and cannot establish.

Keep exploring

4 available tools

Training Zones GeneratorBuild a transparent 3-, 5-, or 6-zone table.FTP CalculatorEstimate cycling FTP from a selected field-test protocol.Lactate Threshold CalculatorInterpolate LT1 and LT2 from an entered incremental test.TSS CalculatorCalculate power-based intensity and training stress.

Public verification recordFormula v1.0.0

Review scope: All Source/target Combinations, Heart-rate And Power Bounds, Percentage Tables, And Same-system Rejection.
Review team: CalculatorGeek Expert Review Team
Verified: 2026-09-27
Next source review: 2027-03-27
Automated fixtures: 1 cases

Review method

Recompute Target boundary = the common heart-rate or FTP reference x the target system percentage. independently; verify unit normalization, protocol selection, internal consistency, and invalid boundaries.

Known limitations

Zone nomenclature varies across coaches, federations, devices, and sports.
Conversion does not discover individual thresholds.
Heart-rate and power values cannot be converted directly into each other.

Primary sources

Latest update

2026-09-27 · Added complete endurance-suite calculator with verified model, source ledger, premium result, and unified contextual navigation.

Published calculation checks

Case	Inputs	Expected result
Five to three at reference 200	basis=heart_rate, source_zone_count=5, target_zone_count=3, reference_value=200 value	target_zone_1_low=100, target_zone_1_high=140, target_zone_3_low=170, target_zone_3_high=200

On this page

Direct answer

The converter recalculates the target system from the same maximum-heart-rate or FTP reference.

It does not average or rename existing device boundaries. It creates two transparent conventions from one anchor value.

Create a fresh reference with the Zones Generator and calculate a cycling reference with the FTP Calculator.

How to use the calculator

Choose maximum heart rate or FTP.
Select the source zone count.
Select a different target zone count.
Update device boundaries using the displayed target table.

Inputs, outputs, and result meaning

Inputs

Reference type: Choose the unit represented by the reference.
Source convention: Select the convention you are translating from.
Target convention: Select a different target convention.
Reference value: Enter maximum heart rate or FTP as selected.

Outputs

Reference value: A displayed result from the stated method and the entered assumptions.
Target zone 1 low: A displayed result from the stated method and the entered assumptions.
Target zone 1 high: A displayed result from the stated method and the entered assumptions.
Target zone 2 low: A displayed result from the stated method and the entered assumptions.
Target zone 2 high: A displayed result from the stated method and the entered assumptions.
Target zone 3 low: A displayed result from the stated method and the entered assumptions.
Target zone 3 high: A displayed result from the stated method and the entered assumptions.
Target zone 4 low: A displayed result from the stated method and the entered assumptions.
Target zone 4 high: A displayed result from the stated method and the entered assumptions.
Target zone 5 low: A displayed result from the stated method and the entered assumptions.
Target zone 5 high: A displayed result from the stated method and the entered assumptions.
Target zone 6 low: A displayed result from the stated method and the entered assumptions.
Target zone 6 high: A displayed result from the stated method and the entered assumptions.

Formula and methodology

Method: Target boundary = the common heart-rate or FTP reference x the target system percentage.

Both systems are displayed from the same anchor. The model does not claim that similarly numbered zones have identical physiological meaning.

Worked examples

Five zones to three zones at 200

The target 3-zone table becomes 100-140, 140-170, and 170-200 reference units.

Interpretation and limitations

Zone nomenclature varies across coaches, federations, devices, and sports.
Conversion does not discover individual thresholds.
Heart-rate and power values cannot be converted directly into each other.

Frequently asked questions

Why must the source and target differ?

Otherwise no conversion task exists.

Does Zone 2 mean the same thing in every system?

No. Always check the displayed percentages and method.

Can I enter threshold heart rate?

This version uses maximum heart rate or FTP; threshold-based models need their own bands.

How should I compare results over time?

Repeat the same protocol, units, equipment setup, and environmental conditions, then review the supporting outputs rather than only the headline number.

Sources and transparency

CalculatorGeek independently recomputed every published fixture on 2026-09-27. Sources establish the equation, protocol, or interpretation boundary; they do not turn an estimate into a laboratory measurement or personalized advice.