Contact HeatIndexCalculator.org
Not medical advice
Email info@heatindexcalculator.org or call +46 760 061 969 about this website. Use the email address for privacy questions as well.
Help us reproduce a problem
For a calculation issue, include the page, temperature, unit, relative humidity and result you saw. Tell us if you were using measured WBGT sensor values or the limited shade-only estimate. A fictional example is fine.
For a display or accessibility issue, describe the device, browser and step that was difficult. Do not include private health or employment information in screenshots.
Urgent concerns belong with emergency services
This address and phone number are not an emergency service, medical advice line or real-time heat-monitoring service. For suspected heat stroke, call 911 in the United States or the local emergency number where you are. Do not wait for a website reply.
For a workplace or organized event, report unsafe conditions to the person responsible for its heat-safety plan. Questions about an individual's symptoms, medicines or medical conditions belong with a qualified healthcare professional.
Method and transparency
Last updated: 6 November 2026. Not medical advice.