Simple Science Fitness

Simple Science Fitness provides exercise and nutrition resources with calculators for calories, macros, heart rate and strength standards.

ss.fitness/calculators
Simple Science Fitness homepage screenshot

About Simple Science Fitness

Simple Science Fitness provides exercise and nutrition calculators, including tools for calories, macronutrients, heart rate zones, VO2 max, biological age, desired body weight, and strength standards. The heart rate tool calculates zones from age and an optional resting heart rate, and lists difficulty, purpose, benefits, and example activities for five zones.

The heart rate table notes it is designed for the average person with a resting heart rate of 60–80 BPM, with a lower resting rate resulting in lower BPM values within the zones.

Key features

  • Calorie Calculator
  • Macronutrient Calculator
  • Heart Rate Zone Table using age and optional resting heart rate
  • VO2 Max Calculator with results table for men and women
  • Biological Age Calculator
  • Desired Body Weight and Strength Standards calculators
Best for: People who want basic calorie, nutrition, and exercise calculators on the web.
Good for
  • Offers several fitness calculators on one calculators page
  • Heart rate zones include purpose, benefits, and example activities
  • VO2 max results include interpretation ranges for men and women
Watch out for
  • Heart rate table is designed for average resting rates of 60-80 BPM

Simple Science Fitness at a glance

Type
Website
Pricing
Not confirmed. Check the site
Platforms
Web
Open source
Not stated
Last checked
Oct 5, 2026 · Online when checked
Listed
Oct 5, 2026

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Simple Science Fitness FAQ

What information is needed for the Heart Rate Zone Table?
Age, with resting heart rate as an optional input to calculate BPM values.
Does the Heart Rate Zone Table apply to people with low resting heart rates?
The note says it is designed for the average person with a resting heart rate of 60-80 BPM, and a lower resting rate results in lower BPM values within the zones.
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