Life & fun · alternatives · 2026
24 alternatives to Grams.io – calculate how long drug(s) stay in body
A half-life calculator that estimates how long a drug is in your body.
Grams.io is a calculator tool that helps users determine how long drugs remain in their system. Launched in 2022, the application provides information about drug metabolism and clearance times. It is designed for… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Grams.io – calculate how long drug(s) stay in body launched in 2022; newer entries below may have overtaken it.
- 1
Calculate how long caffeine stays in your system
2025 · caffeinehalflife.com · its alternatives →
- 2GL
Things I have learned over time. :-)
2018 · assafmo.github.io · its alternatives →
- 3
How much free time do you have remaining?
2018 · erikrood.com · its alternatives →
- 4
A stark reminder of the finiteness of life
2019 · failflow.com · its alternatives →
- 5
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iollo▲128At-home metabolomics testing to help extend healthy lifespan
2022 · iollo.com · its alternatives →
- 7
Comprehensive medical, fitness and health calculator
2021 · play.google.com · its alternatives →
- 8
Biohack▲9Your food ages you or protects you. Now you can see which.
Jun 2026 · apps.apple.com · its alternatives →
- 9
Privacy-first period calendar with smart predictions 📅
2020 · period-calculator.com · its alternatives →
- 10
Secrets of time: know your age instantly
2023 · play.google.com · its alternatives →
- 11
LifeLeft▲80Visualize the amount of time you have left
2021 · chromewebstore.google.com · its alternatives →
- 12
A website that helps you calculate your daily water intake
2023 · its alternatives →
- 13MC
2015 · molcalc.org · its alternatives →
- 14
Calculate your longevity. Simple. Interactive. Free.
2024 · mylifebar.com · its alternatives →
- 15
The countdown to death, on every new tab
2024 · chromewebstore.google.com · its alternatives →
- 16
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- 18
Accurate, easy-to-use peptide calculator for precise dosages
2025 · peptidescalculator.com · its alternatives →
- 19
- 20
It calculates total length of YouTube playlists
2025 · its alternatives →
- 21
Quick insulin calculator: AI-powered & intuitive
2025 · aflussing.github.io · its alternatives →
- 22
Easily calculate the total length of any playlist
Oct 2025 · ytplaylistlength.pro · its alternatives →
- 23
Chronological age calculator
2025 · chronologicalagescalculator.com · its alternatives →
- 24
Track and optimize your fitness with smarter health tools
Jan 2026 · raviyafitness.com · its alternatives →
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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →