Your free, personalised UK health report — in under 2 minutes
A free BMI calculator, waist-to-height ratio calculator and calorie calculator in one — built for UK adults and grounded in NHS guidance, not guesswork.
What your free UK health calculator report includes
BMI & waist-to-height ratio
Calculated instantly from your measurements
Personalised calorie target
Based on your age, activity level and goal
NHS-cited guidance
Every recommendation sourced from nhs.uk
Instant PDF report
Delivered to your inbox in minutes, free
Start free — upgrade only if you want more
Free
Health Pack
Full health report + NHS reference card, by email
£4.99
Progress Tracker
12-week tracker with milestones and habit streaks
£11.99
Complete Kickstart Pack
Tracker + extended report + NHS wellness guide
Free forever. No account needed. Takes about 2 minutes.
A free BMI and calorie calculator built for the UK
Most calorie and BMI calculators use generic international formulas. CalcSense uses NHS-cited thresholds and UK activity guidelines, so your results reflect guidance written for UK adults.
Is CalcSense free to use?
Yes. The full health report and NHS reference card are free, with optional paid add-ons like a 12-week progress tracker if you want more detail.
How is my calorie target calculated?
From your age, sex, activity level and goal, using the Mifflin-St Jeor formula — with a built-in safety floor so recommendations never drop below NHS-recommended minimums.
Does it use NHS guidance?
Every threshold and recommendation is sourced from nhs.uk under the Open Government Licence v3.0. CalcSense is not endorsed by the NHS.